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Flicker-free Power Supply for non-Waveform LED Strip Light

I'm interested in the FilmGrade DC Power Supply for LED Strip as well as the Flicker-Free Dimmer. I already have LED strips in my studio that are causing significant flickering problems when filming them and was wondering if I could just get the Waveform Lighting DC Power Supply and use that instead of the AC adaptor provided with my LED strips? I was also checking out your Dimmer but I don't really need dimming capabilities, I'm just looking for a flicker-free power solution. In that case would your DC Power Supply fork for my needs? 

Based on my review of the product manual, it does appear that the FilmGrade™ DC Power Supply for LED Strip product could be compatible with the lighting product referenced.

That being said, I do not see a listed voltage for the OLS Home Accent Multi-Color Pro Series Lighting Kit product.

As such, we would recommend checking the pre-packaged A/C adapter to confirm voltage compatibility prior to purchase. Generally speaking, utilizing an incorrect voltage can cause product damage and create safety hazards.

My current power supply outputs 12V and 2Amps, does that sound like this would work as a replacement then, and should I consider the 12V version over the 24V version? Also will this for sure resolve the flickering issue I currently have when filming my LEDs?

Based on the details provided we would recommend a 12V power supply product for your installation over the 24V, as utilizing a higher voltage power supply with 12V products can overload the product circuitry and cause hazardous product issues. We would also recommend reviewing any safety guides that your LED strips may have come with to ensure compatibility.

Flicker-free T8 LED Tubes for Vision Therapy Office Lighting

We are a vision therapy institute that sees patients recovering from traumatic brain injury. One of the symptoms of post-traumatic vision syndrome is an extreme sensitivity to light. Our office has regular fluorescent ballasts. We're looking for a solution with a lower flicker rate and a warmer color temperature. Will purchasing your T8 tubes solve for our flicker rate issues or will we see flicker at the same rate as the current fluorescents? 

Based on the details provided, we might recommend our 4000K CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free T8 LED Tube Light product for your office installation. 

​While we can confirm that this product offers flicker-free performance, it might be helpful to know that some tube light fixtures contain pre-installed ballasts which are incompatible. When these products are installed within fixtures that may have not been designed for LED products, they are more likely to exhibit compatibility issues.

However, we do offer an illustrated guide to the alternative ballast-bypass installation methods, as well as a guide for the ballasts which have been tested for compatibility. For your reference, we have included both links below.

Tested Ballast List:

Product Specification Sheet:

Are your NorthLux A19 bulbs flicker-free?

Are your NorthLux bulbs flicker-free, like your Centric bulbs? Also, do you offer a watt equivalence higher than 60, please?

We are happy to confirm that the NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio product features the same flicker-free operation as the CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free A19 10W LED Bulbs.

Unfortunately, we do not have a higher-wattage A19 bulb available at the moment. You may want to consider our A21 Bulbs, which are equivalent to a 100W incandescent bulb. 

T5 LED Linear Light Fixtures Flicker Data

Does Waveform have any data regarding the flick % of the NorthLux™ 95 CRI T5 LED Linear Light Fixtures? (Or even an educated guess?)

We can confirm that our T5 LED Linear Light Fixtures are flicker-free. 

I do have one more question: is a longer, or additional, extension cord (for connecting two lamps) available for the NorthLux T5 lamps?

While we currently do not have a longer power cord available than the 12” (1 ft) pre-packaged cord, we can confirm that this product is compatible with longer third-party C8 plug cords that could be found at stores such as Home Depot or Amazon.

What is the difference between the Centric and Film Grade A19 bulbs?

What is the difference between the Centric and Film Grade A19 bulbs? Are they both completely flicker-free? 

We can confirm that both products feature flicker-free operation, and are extremely similar in design. The primary difference between these items can be found in the color temperature options that are available.

Will your flicker-free light bulbs prevent flickering during power fluctuations?

I am interested in your flicker-free lighting, but I have one important question: Will your flicker-free light bulbs prevent flickering during power fluctuations as well? For example, some of our current led lighting (Feit -- cheap, I know) flickers when we run devices/appliances that draw heavy loads like the washing machine, 3d printer, etc. Do your bulbs solve this problem?

We are happy to confirm that the flicker-free LED bulbs will offer flicker-free performance under normal running conditions. However, it is difficult to know how these products would react if power fluctuations occur, due to the numerous potential variables.

However, if these items experience considerable flickering or fluctuations while operating at with same time as the high-power draw devices and appliances, please know that we are happy to offer a 30-day return policy for all orders.

Flicker-free LED Bulbs for Golf Sim Room Lighting

I'm looking for bulbs that are flicker-free to use in my Golf Sim room. I have two cameras that I use and the current LED lighting I have flickers which can be hard on the eyes and annoying. 

The first product which comes to mind is the CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free A19 10W LED Bulb. This product is available in both 5000K and 6500K and offers flicker-free performance that your installation might benefit from.

The 6500K option might be of specific interest to you, as the light emitted by the product will closely simulate that of full direct sunlight. For more information regarding the differences between 5000K and 6500K, I have attached a helpful blog post from our website below.

Difference Between 5000K and 6500K Bulbs:

Do you have flicker data on T5 LED Linear Light Fixture

I'm an Australian artist/painter and your lights sound/spec amazingly. Do you have Flicker data/info on these particular lights? Installing these lights on the ceiling, clearly, I'll have to turn the power on and off at the wall, rather than on the ballast itself, I presume this is ok? So the light would be in the on position, with power being turned on and off at the wall. Is that all ok? - How long is the c9-c8 connector that comes with the light? And can the lights be daisy-chained with normal c8-c8 extensions of longer lengths bought off the shelf? 

The NorthLux™ 95 CRI T5 LED Linear Light Fixtures offers flicker-free performance. 

Though these linear light fixture products can be daisy-chained together using the 12-inch (30 cm) included cable or via third-party C8 two-prong plugs, please note that these items are not designed to be configured with wall switches or dimmers. As such, these products might not be ideal for ceiling-mounting in all installations.

Edison Style E26 LED Bulb with Higher Lumen Output

I am looking for a good quality Edison style E26 led bulb that offers 600 plus lumens at 3,000k color light. Do you have any that offer that, as I only see a lumen output of 450 on your website? Also, do you have any Edison type that offers a no-flicker option? We are having issues finding Edison-style LEDs that don’t flicker and aren’t sure where to look especially at 3000k color light. 

Though we do offer Edison-style E26 bulbs in the 3000K color temperature, you are correct that these items are unfortunately not flicker-free, and have an output of 450 lumens.

That being said, I can confirm that we hope to offer a higher-lumen output version of this product sometime in the future, although I do not have any precise dates on hand.

Any idea why the Edison LED style flicker more than the typically led style bulb? We would like to have the Edison style in some of our chandeliers and pendants but the flicker is bothering us. Also, why is it so hard to find quality 3,000k Edison-style LED bulbs? 

Though we cannot comment on the availability or features of 3000K filament bulbs elsewhere, we can confirm that our filament bulbs are currently not flicker-free due to hardware constraints.

As we are continually improving these products with engineering updates, we hope to eventually provide flicker-free performance for all of the products in our catalog.

Are the ABSOLUTE SERIES™ LED Flexible Strip 5000k version flicker-free?

Are the 5000k version of this series flicker-free?

We are happy to confirm that the 5000K ABSOLUTE SERIES™ LED Flexible Strip operates with flicker-free performance when paired with a power supply such as our 12V FilmGrade™ DC Power Supply for LED Strip.

As can be noted on the Photometric Data sheet for the product, the flicker percentage when tested with the FilmGrade™ DC Power Supply for LED Strip is 0.01%.

Centric Daylight vs Northlux

Which 95 CRI T8 LED Tube light is better? We are filming videos. Our other studio lights are 5500K but I am thinking the 5000K can work. They would be replacing the current ceiling lights which are quite warm. I was interested in the flicker-free Centric but the Northlux is advertised as studio lighting. Are there potential flicker issues with the Northlux? 

Our NorthLux T8 LED tube lights should work quite well for your needs! They are also flicker-free but not listed as such, since flicker is generally not a concern for most of our visual arts studio customers.

​On the other hand, we completely understand the concerns you have concerning flicker and on-camera use. As such, as an additional layer of assurance of flicker-free performance, we would recommend installing these lamps in a ballast-bypass configuration so that any flicker or other interference from electronic ballasts is not introduced into the light output stream.

We also do find that many TV/cinematography lighting systems are calibrated to 5500K / 5600K, however, the NorthLux 5000K should be a similar match, and the 95 CRI color accuracy should be a great fit for the film.

Full Spectrum and Flicker-free LED Strips for a Dark One-Bedroom Apartment

I want to put hidden lights all around the ceiling of a dark one-bedroom apartment. I like a full-spectrum LED. Please help me understand and choose the right product. 

We believe that a great first step would be utilizing our standard bulbs in the lighting fixtures in your space.

Based on the details that you provided, we believe that replacing the existing light bulbs could make a large difference at a significantly lower cost than the LED strip light products. As such, we have provided some product links below.

Due to the stated preference for lighting which is similar to direct sunlight, we recommend the 5600K color temperature option of the FilmGrade™ Flicker-Free A19 LED Bulb. 

​This product can be easily installed into standard lighting fixtures, has a 3-year warranty, and offers full spectrum lighting that will appear visually identical to that of natural sunlight.

Product link:

Choosing LED Lighting Allowed for TBI Conditions

I respond poorly to conventional LED lighting. As far as I can tell, my traumatic brain injury causes a response, not unlike that of an epileptic to the flashing of LEDs. The problem could be in the cold blue of the lights used in many commercial settings, or simply the intensity. Can you direct me to articles that will help me understand the problem — and choose bulbs? I am starting with a shop space and I am concerned that the 5000k fixtures you offer will be too white for my eyes. 

Our research and development for our products is generally limited in scope to the technical performance of the LED lighting system, so when it comes to their efficacy in a medical context, our data and ability to provide definitive answers is quite limited.

That being said, I do believe that you are definitely on the right track when attempting to determine the source of symptoms caused by LED lamps.

I have seen most studies link the flicker produced by artificial lighting to detrimental health effects, while the concern with blue light seems generally centered on circadian rhythm disruption.

Natural sunlight is essentially a flicker-free, 100 CRI light source that has a color temperature of 5000K or higher (depending on the season, time of day, etc). Does exposure to natural daylight produce those symptoms for you? If not, I would suspect the issue is more likely related to flicker, rather than color temperature and intensity.

In addressing your lamp configuration question, you are correct that installing our tube lights in a fixture will require some considerations to ensure fixture compatibility. One search that may yield some results is "LED ready T8 fixtures" as these fixtures are built and assembled without any ballast inside.

We are also looking to launch a line of LED ready T8 fixtures in the coming weeks so that could be an option as well.

Photophobia can be a real problem for some people with TBI, so they use sunglasses outside and in most indoor spaces. Somehow, most LEDs seems brighter than outdoor light to my eye, or to my brain. It may be that flicker creates irritation and calls my attention to the lights.

With your input, I am more confident that your 5000k shop lights will work for the space I have in mind. I will start with enough fixtures to test my response to them. I will also look into LED ready fixtures (that will support your 4000k bulbs).

​Your observation that most LEDs seem brighter than outdoor light is very much valid and I suspect the nuanced difference is due to the way in which the light is distributed.

​A single 800 lumen daylight bulb may produce far less light than natural daylight (i.e. "brightness") but the way in which the light is emitted from a very concentrated 1-2 inch sphere is quite unnatural and will most certainly appear brighter to the human eye. Contrast this with natural daylight, where the light falls down from an entire diffused dome of light, aka "the sky," and you can see why our eyes would react differently.

In short, the way in which the light is installed and distributed in your room may also have an effect on your perception and reaction to the lighting environment. For this reason, wall-washing and cove lighting (indirect lighting methods which bounce the light off of interior surfaces) are popular options that can provide a more comfortable space.

LED Strip Lights for Photographing Artworks

I'm looking to create a lighting setup for digitally photographing artworks (mainly paintings) and then printing the files. 

I intended to make 4 panels around 40x50cm from 2-3 5m led rolls cut to lengths and attached to a backboard. I would like to be able to dim these panels also.

​This sounds like a great approach and excellent use case for the ABSOLUTE SERIES LED strip lights. The LED strip lights include double-sided adhesive and should allow for quick installation onto the backboard.

​For dimming, we recommend our FilmGrade flicker-free LED dimmer, which can be installed in between the LED strip lights and the power supply. Please see below for the product link:

​I am looking at the 99% absolute series and would like advice on how much light I may need (how close to space led strips on the panels?) and which driver I may need for say 7.5-meter strip cut to lengths.

​The amount of light needed would depend on the brightness needed for your photography (perhaps determined by your shutter speed, aperture, and ISO settings) as well as the distance away from the artwork. As a general ballpark estimate, each meter emits approximately 1250 lumens, which is equivalent to a 75-100 watt incandescent bulb.

​The maximum run length for the product is 5.0 meters. If connecting 7.5 meters per panel, you will need two separate power supplies (and perhaps, unfortunately, you will also require two separate dimmers for the separate circuits). The link to the power supply is shown below:

​Our general recommendation for spacing is to space the LED strip lights no farther apart than the distance from the illumination surface. In other words, if the panel is to be placed 20 cm from the illumination surface, the LED strips should not be spaced farther than 20 cm apart.

​Also, would the absolute series be good to record digital colors from paintings? I may install a linear polarizing sheet across the front of the panels also. They will likely be set at 45 degrees to paint.

​Yes, the ABSOLUTE SERIES is a great option for digital image capture! The 99 CRI rating is the highest that is currently available in the industry and informs us that the color accuracy as captured by your camera would be nearly perfect.

​The polarizing sheet, as well as perhaps a diffuser sheet, can help ensure even and smooth light distribution across the paintings.

​I notice a beam angle referenced in preassembled lighting panels - can you briefly explain this? and is it possible to recreate it with the strip LEDs?

The beam angle refers to the angle at which the light is dispersed. Our LED strip lights have a beam angle of 120 degrees, which you can think of as being a very wide conical light dispersion angle.

An led strip shows a lumen output of 6250. What would be a comparison in Lux at 1m or 3m? I suspect I am a little underpowered at 6250 lumens / 416 watts approx.

​A single row of LED strip lights will provide approximately 300 lux at 1 meter, and 25 lux at 3 meters. If using multiple rows, however, you would be able to add these lux values up in a linear fashion to determine the illuminance on that particular surface.

​You mentioned a space of 20cm between strips at a 20cm distance. I had guessed placing led strips at around an 8cm gap (mainly for estimated panel size using a 1x 5m reel, but I think I may need the strips much closer. 

Closer together than the 20 cm distance I had somewhat arbitrarily suggested is not an issue at all.

​I think I may need 4 panels of 5m strips cut to lengths (with a driver and dimmer for each panel) although this becomes pricy. Would you concur that with your products a 5m strip is the maximum for the drivers and dimmer?

Unfortunately, the maximum run length would indeed be 5 meters due to the power supply capacity as well as the limitations of the LED strip circuitry.

I generally understand CRI and the wavelengths of color and your absolute series seems to be as good as a "roto light" or "Gemini lite panel" and possibly as good as it gets. I see another figure being used for color perception and described as TICI. Do you have a rating for the Absolute series and what is TICI? (can't find it on google)

TLCI is the Television Lighting Consistency Index, frequently used in TV and broadcast environments in Europe. Similar to CRI, the TLCI determines color accuracy in the context of cameras and photography. Our ABSOLUTE SERIES has been tested to 99 TLCI (please see attached).

Are your LEDs flicker-free? I presume 4x 5m reels could all be exactly the same intensity and color? And the best color accuracy would be from a fixed-temperature LED. I note the preassembled panels from others have control over temperature, intensity, and hue in some cases.

Our LEDs are flicker-free when used with a flicker-free power source. All reels are calibrated to the same brightness and color point and are not adjustable, unfortunately.

​Would you happen to know what the import charges would be?

Unfortunately, import charges are quite variable and it is difficult to provide estimates up front, as these can depend on the specific port of import as well as customs officer discretion.

​If you would like to inquire with local customs authorities in advance, you might want to check on the estimated costs for products with HTS code 8539.50.0090, which is what is typically used for LED strip lights.

Choosing between Shop Light Fixtures and T8 LED Tubes for Art Studio Lighting

I’m a painter looking for shop lights for my art studio, and I’m trying to decide between purchasing your Northlux 95 CRI LED Shop Light Fixtures or your NorthLux 95 CRI T8 LED Tubes for Art & Studio. I have several questions: 

In terms of lighting an art studio, do you recommend one of these options over the other? Is there a difference in the quality of light they provide?

Our daylight color temperature products are a great fit for an art studio, and generally speaking, all products under our "NorthLux" brand would be an excellent fit.

As you mention, however, many of the lighting requirements for artwork and other applications, such as studio photography, do overlap quite a bit. As such, you may see several of our products which are listed on separate product pages even though the underlying product is the same. (Please see my response to your question below about the CENTRIC DAYLIGH vs NorthLux, for example).

And if you recommend I purchase the LED tubes, is there a hanging fixture you recommend that will work well with them?

​We don't have any specific recommendations, and it is a bit difficult to locate compatible fixtures since many fixtures available on the market today are geared towards fluorescent lamps and not LED lamps.

Our LED lamps can be used with fluorescent fixtures as long as they either contain a compatible fluorescent ballast, or the fluorescent ballast is bypassed.

​We would recommend performing a search for "LED ready" fluorescent fixtures or consider the shop-light style LED fixtures you mention below.

Does the Northlux 95 CRI LED Shop Light Fixture have a frosted cover on it? Or is the cover clear, exposing the LED strips?

Our previous batch of shop light fixtures did not have a frosted cover, so the photos you see on the website will also reflect this and show the individual LED diodes. Our new batches, however, have a frosted cover, allowing for a more diffused and distributed light output.

What is the difference between your Centric Daylight and Northlux lines? Would the Centric Daylight tube lights also work well in an art studio?

​Both the CENTRIC DAYLIGHT and NorthLux product lines have the same underlying technical specifications. As mentioned above, these product markets have identical or very similar lighting requirements and the products can be used for either application.

The best way to confirm whether products are identical or not would be to check the part numbers listed under the product name on each product page.

I noticed that the Centric Daylight tube lights are flicker-free, which sounds great. Do the Northlux lights have a flicker? 

​The NorthLux lamps are also flicker-free, so that would be a nice benefit for an art studio as well (even though we are not actively marketing it as such at the moment).

If I order the light fixtures now, will the ones I receive have the frosted cover? In case it makes a difference, I plan on getting a six-pack of the 5000k ones. 

Yes, any orders placed now or in the future for the NorthLux shop light fixtures (5000K) will have the frosted cover on them.

Just to clarify, is the entire NorthLux line of products flicker-free, including the shop light fixtures?

The new 5000K fixtures are both flicker-free and have a frosted cover.

In case the shop light fixtures don't work out for me, is it possible for Waveform Lighting to schedule a pickup for the return from my home? I'm located in California. 

We offer free return shipping via a pre-paid USPS Priority Mail shipping label. USPS offers complimentary pickup at most residences so if this works for you, we should not have any issues accommodating the pickup request!

Is it safe to plug the shop light fixtures into an extension cord, even when daisy-chaining multiple fixtures? My studio ceiling is very high and the 60-inch power cable won't reach any outlets without an extension cord.  

Yes, as long as you do not exceed the amperage rating on the extension cord, you should not have any issues. The amperage is calculated based on the individual amperage ratings of each fixture (0.4 amps) multiplied by the number of fixtures you plan on daisy-chaining.

For example, four fixtures would have an amperage of 1.6 amps (0.4 amps x 4 fixtures) so you will want to make sure the extension cable has a rating that exceeds 1.6 amps.

Flicker-free Bulb for Color Rendition and Artwork

I'm looking for a flicker-free bulb that has good color rendition, for alertness and artwork. What do you recommend?

Though we, unfortunately, do not have 100W bulb products available at this time, we're happy to confirm that we sell many products that offer a high CRI which could be beneficial for artwork creation.

For example, our D50 5000K A19 LED Bulb for Color Matching (ISO3664:2000) product is flicker-free and offers a high CRI of 95+, as well as an R9 value of 80+.

This product is also designed to be compliant with the D50 CIE Standard, which may prove to be useful. For more information on D50, we have a terrific blog post on our website, which I have linked below.

What is D50 for graphic arts & printing?:

Are there any flicker-free floodlights?

Unfortunately, we do not currently sell any flicker-free floodlights aside from our realUV™ LED Flood Light product at this time.

However, based on the details provided, our NorthLux™ 95 CRI T5 LED Linear Light Fixtures might be of interest as an alternative. These integrated lighting fixtures can be easily mounted onto many surfaces, contains all electrical components within the housing, and are available in both the 5000K and 6500K color temperatures.

Does High CRI LED Strip Light Flicker-free?

Does high CRI LED strip flicker-free? In that, if we use the dimmer, it will be flicker-free or not? We need to use your LEDs for our test equipment and we need to control the lux level with your diffuser, will it be recommended that any other products be available with you? 

We're happy to confirm that our LED Strip Lights are flicker-free when paired with a flicker-free power supply, such as our FilmGrade™ DC Power Supply for LED Strip, as well as our FilmGrade™ Flicker-Free LED Dimmer.

Please note that as our LED Strip Light products are available in both 12V and 24V versions, it will be important to select a compatible 12V or 24V power supply. 

Do you have bulbs that have no blue light or flickering?

I am in the process of designing a new home. My goal is to keep blue light and flickering as close to 0 as possible. Do you have bulbs that would satisfy this request?

In the interim, the first product that comes to mind is our 2700K CENTRIC HOME™ LED Strip Lights for Home & Residential product, which is flicker-free when paired with one of our flicker-free power supplies.

Alternatively, we also offer the Lux24™ Circadian LED Bulb product which might be of interest, however, this product is unfortunately not flicker-free.

If it proves to be useful, we also have a great article on our website that discussed blue light in depth:

Blue Light, Melatonin, and Circadian Rhythms:

I am designing a home from scratch and would like to have lights that have no blue light or flickering throughout the home. 

As mentioned in the blog post, blue light can be found within most light sources, including full-spectrum lighting. However, special bulbs such as our Lux24™ Circadian LED Bulb are designed to include as little blue light as possible. Unfortunately, this product is not designed to be flicker-free.

While we are proud to offer many full spectrum lighting products that are designed to be flicker-free, the Lux24 is unique in the extremely low level of blue light emitted. As such, we may not be able to provide any other products that could be ideal for your home design, as well as the specifications mentioned.

Would these bulbs flicker much if there are voltage variances at times?

Would these bulbs flicker much if there are voltage variances at times?

Generally, voltage fluctuations are not desirable for our LED products, and the flicker that they introduce would be quite different from the stroboscopic flicker that our products aim to address.

For example, voltage fluctuations caused by an unstable power grid may result in very noticeable changes in brightness that span several seconds. Our flicker-free products do not have any built-in features that would reduce this effect.

On the other hand, consistent but stroboscopic flicker seen as a flashing, on the order of 60 times or more per second, is eliminated using our flicker-free technology.

FilmGrade A19 LED Bulb 3000K Spectrum Chart

Can you please send me the Spectrum Chart PDF for this item: FilmGrade™ Flicker-Free A19 LED Bulb

Below is a link to the photometric report for the 3200K FilmGrade™ Flicker-Free A19 LED Bulb product (PN 4005.30).


Do you all have plans to make any G16.5 bulbs or other common household bulbs?

Unfortunately, I am not aware of any plans to introduce other bulb standards, such as the G16.5, to our store at this time.

I’m confused about the PDF. It seems to be the exact same pdf as the centric 3000K. Is there no difference on the spectrum and CRI levels? Specifically looking at R9...

The identical data is due to the fact that the 3000K FilmGrade™ Flicker-Free A19 LED Bulb product is identical to the 3000K CENTRIC HOME™ Full Spectrum Flicker-Free A19 10W LED Bulb. This can be noted by the shared part number of PN 4005.30. As such, while there may be extremely small differences between individual bulbs, the performance can be expected to be the same for both items.

We do apologize for any confusion which may have arisen by this, as these products are displayed on multiple pages for marketing purposes.

Is there a Flicker-Free BR30 option? I guess the idea is 6% is close enough. 

We can confirm that our BR30 bulbs are not currently flicker-free, though they do offer a lower flicker rate than many similar products on the market.

Flicker-free and Non-dimmable Recessed Light Bulbs

I see you have the BR30s but do you know where I can get the Zero flicker, non-dimmable recessed light bulbs?

We unfortunately are not aware of any BR40 lamps that feature flicker-free light output.​One alternative would be to consider our BR30 lamps, which have a 3.75 inch diameter. The gap between the lamp and the ceiling fixture rim may be on the larger side, but the lamps will fit in the fixture without any issues.

Flicker-free LED lights for Golf Simulator System

We plan to install a Uneekor EyeXO golf simulator with 2 high-speed cameras. Uneekor has recommended I install at least 8 15-watt or higher non-flickering LED track lights to provide adequate lighting to avoid blurring of the images during the golf swing. 

We don't currently have any track light fixtures, but you may want to consider several of our flicker-free lighting options to ensure that your golf simulator system is able to accurately capture high-speed images.

Our A19 products are rated flicker-free and may be the easiest product to install and set up, as it is a standard screw-in light bulb that can be used in a standard lamp fixture. Please see below for the product link:

How many of these installed in track lighting fixtures would be necessary to provide adequate lighting to capture the high speed images? The picture in the Optics attachment on page 10 shows 3 track lighting fixtures with 11 lights distributed among them.

It's a bit difficult to provide a definitive answer for brightness requirements, as this would depend on the camera system and the various light sensors used in the golf simulator.

One way to do a comparison against their recommendation is to compare lamp power. Our LED lamps are 10 watt lamps, so to achieve the same power level as the 8x 15 watt lamp recommendation, you will need at least 12 lamps to reach the same amount of power (8 lamps x 15 watts per lamp = 120 watts).

However, since our lamps are omni-directional, you may not see as much perceived brightness directed towards the golfer, compared to the track light lamps which tend to be more directional. As such, it may be beneficial to increase the power budget further to ensure sufficient brightness.

We would perhaps recommend testing and taking advantage of our free returns policy. If for whatever reason you find that the LED bulbs are not going to work for your project, we would be more than happy to pay for return shipping and offer a full refund. 

Do I want the A19 in 6000K?

Both the 6500K and 5000K should work fine for your needs, as both are calibrated to natural daylight and your camera system should have these calibrations built in. The color temperatures correspond, roughly, to north-facing daylight for 6500K, and direct noon sun for 5000K.​Both options offer 95 CRI and flicker-free light output and therefore should serve well for the application.

Recommended LED Strip Lights with a brightness level equivalent to a Retail Showroom

I am interested in the LED strip lights to light an area 15m long by 6m wide and 2.8m ceilings to a brightness level equivalent to a retail showroom. The calculator says I will need approx 42,000 lumens however I want to confirm that the led strip lights will be suitable. The purpose of the room is mostly storage for area rugs; however, customers regularly request more photos, so colour-accurate lighting throughout the entire area would be ideal. If I was to run two lines of the led strip lights from one end to the other which would equal about 6 reels total, would this actually light the area to the required level? Other than the 6 reels what else would I need to install this? 

To confirm, I've also run the numbers on my end based on the dimensions provided (converted to approximately 50 x 20 ft = 1000 square feet).

​The 42,000 lumens would provide you with approximately 40 footcandles, which is a great brightness level for general color evaluation, especially for larger surface areas such as rugs

Each reel emits approximately 7500 lumens, so the 6 reels sounds like a great target (7500 lumens per reel x 6 reels = 45,000 lumens). Each 16.4 ft (5 meter) reel requires its own power supply, so you will also need to purchase 6 power supply units.

I've linked to some example layouts which show how the power supplies can be connected for a non-dimmable, and dimmable setup, respectively:

Going with the same target of approx 43,000 lumens and using the linear light fixtures I would need 24 fixtures however I am not sure of the difference between the Northlux 95 CRI and the D50 for color matching, is there a benefit of one over the other for my use case?

Both the NorthLux and D50 T5 linear lights are actually the same product listed on different product pages for marketing purposes (PN 4026.4F.50) - sorry for any confusion!

We will also be creating content for social media, photos and videos (will the lights flicker?).

Our next batch, expected to be available in Feb 2021, will be 100% flicker free and will be suitable for photography.

We would like to have the warehouse look like it is a bright naturally lit room, and are considering the 5000K colour temperature.

This sounds like a great choice! 5000K is generally a nice, neutral light color that approximates noon sunshine. (6500K would be closer to north-facing blue sky).

We will be running the fixtures down two rows the length of the warehouse approx 1.5m from the sidewalls, if we ran 12 along each side would this create the evenest lighting or is there a better method? 

The best way to achieve even lighting would be to space out the fixtures as evenly as possible. Of course, with wiring and aesthetics that may not always be realistic. If I recall correctly, you had mentioned that the width of the space is 6 meters, so running the fixtures 1.5 meters (or perhaps 2.0 meters) from the walls would indeed provide sufficiently distributed light.

How many lights can be daisy-chained together? how many fixtures can be grouped per power plug, and do you have international plugs available at all?

The maximum connection is 70 feet (21 meters). If using the 4-ft fixtures, this would work out to approximately 17 fixtures per daisy-chain link. Unfortunately, we do not provide any additional plug converters, but you may also want to consider locating a C8 plug wire locally, should you prefer avoiding the use of a plug adapter.

Does Full Spectrum Flicker-Free A19 LED Bulb Emit High Levels of EMF?

LED lights are known to emit high levels of EMFs and also produce dirty electricity. Can you tell me more about this regarding these light bulbs?

We do not have any EMF measurements on our lighting products at this time. We can verify that they are flicker-free, however, with a flicker % of less than 2%.

So you mean to tell me someone can call something "flicker free" even though it still has a flicker?

The official threshold for our flicker-free products is 2%. In actual tests, our flicker % is at 0%. For example, see below:

Do you have a recommended dimmer to minimize flicker while dimming?

I installed new recessed lighting and looking for quality LED bulbs with matching dimmers. I'm personally sensitive to color and flicker gives me headaches. I'm looking at the 4011.30.6P. It shows a flicker of 6%. Is this low flicker amplitude maintained while dimming. It appears Lutron and Leviton dimmer are mentioned as compatible. Any particular dimmer recommendation to minimize flicker while dimming?

We ran a series of dimming tests using a Lutron CTCL-150 and confirmed that the flicker performance is indeed best at or near 100% brightness, where we observed ~7% flicker and 0.02 flicker index.

As the brightness setting is decreased, flicker percentage increases to ~11% with 0.03 flicker index. Given that traditional incandescent lamps exhibit flicker rates of 15% and higher, this performance is in line with, or exceeds that of traditional incandescent lamps and should not present any issues for most residential installations and applications.

Attached are the test results as well as a plotted chart of the results.


Do you think the performance will be similar over the full line of Lutron LED+ dimmers or do you think this will vary substantially from one dimmer model to the next?

We've just repeated the test with the Lutron TGCL-153PH series dimmer and saw the same results (7-11% from high to low).​While we wouldn't be able to draw any conclusions from just these two tests, we now do possess two sets of data points for Lutron performance which may give us some further confidence regarding dimming performance across brightness settings.

Do your flicker-free LED bulbs produce EMI?

Do your flicker-free LED bulbs produce EMI or are they also EMI-free? Also - it appears your low Blue light filament bulb is not flicker-free - is that correct? If not flicker-free, what percentage of flicker does it have? 

We, unfortunately, do not have any technical data on the EMF emissions of the product this time.

Our Lux24 filament bulb is not flicker-free and has a flicker rate of approximately 15-30%.

6500K Flicker-free Lighting for Art Capture, Color Correction and Fine art Printing

I perform art to capture, color correction, and fine art printing. I am using Ikan Lyra LEDs at this time but not so happy with their results. They are okay, but I am looking for 6500K lighting, also flicker-free. I see you have bulbs and strips. 

We suspect that the primary reason for the difficulty in judging color differences is due to an incomplete spectrum emitted by the Ikan product. Specifically, this will likely be reflected in a low CRI value, possibly in the 80-90 range. (You may also want to look into the R9 value, which provides even more data about red color rendering in particular).

As a starting point, we would recommend experimenting with a few of our 95 CRI products. Here are the A19 bulbs which are daylight calibrated to D50 (5000K) and D65 (6500K) with a 95 CRI rating and would be a great starting point for your tests:

If you would like to consider our LED strip lights, we would recommend our FilmGrade LED strip lights which are offered in both 5600K and 6500K:

Our 5000K LED strip lights (also in 95 CRI) are listed under our retail & commercial section:

Installing the LED strip lights will require a bit of additional assembly and installation work. For additional guidance, we recommend referencing our layout maps which can be found at the link below:

​Finally, ​we would recommend taking advantage of our returns policy to test out several of the color temperature options and determine if our products do indeed offer an improvement over your current setup. The full policy can be found below:

How do I know if the LED sign is compatible with Flicker Free LED Dimmer?

I just recently purchased an LED sign. It flickers on video when dimming. How do I know if that LED sign is compatible with your dimmer?

We can confirm that our FilmGrade™ Flicker-Free LED Dimmer is compatible with LED systems at any voltage level between 6 and 60V DC and < 10 Amps of current draw. If your LED sign exceeds this voltage, we expect that the dimmer would be incompatible.

However, if there are compatibility issues between the dimmer and your LED sign, we would be more than happy to issue a return label to have the item sent back to us for a refund.

Ultra High 95 CRI A19 5W LED vs CENTRIC HOME A19 10W LED Bulb

I need a single bulb that's around 400 lumens and 2700K, so I was looking at your Ultra High 95 CRI A19 5W LED. However, the description does NOT mention that it is flicker-free nor does it mention that it's full-spectrum (while your CENTRIC HOME A19 10W LED Bulb does mention these traits). Is the 5W a lower-quality product? Or is it just fewer lumens?

I can confirm that the 2700K Ultra High 95 CRI A19 5W LED Filament Bulb features the same high CRI of 95+ as the CENTRIC HOME™ Full Spectrum Flicker-Free A19 10W LED Bulb. As such, both products are considered to be full-spectrum.

However, the Ultra High 95 CRI A19 bulb does not offer the same flicker-free performance as the CENTRIC HOME™ bulbs. The flicker-rate of the Ultra High 95 CRI A19 bulb is similar to that of traditional incandescent bulbs.

The benefits offered by the Ultra High 95 CRI A19 bulbs can be found in the warmer color temperatures available, as well as the compatibility with dimmers. In contrast, the CENTRIC HOME™ is not dimmable.

Do you have a Flicker-free Dimmable Bulb Compatible with an Enclosed Fixture?

I live in an apartment with enclosed fixtures and am trying to find High CRI dimmable flicker-free bulbs that will last a semi-reasonable time in an enclosed fixture.

Unfortunately, our dimmable LED bulbs are not compatible with enclosed lighting fixtures due to the requirements for heat dissipation and airflow.

However, if the lighting fixtures are not fully-enclosed, we would be happy to recommend our Full Spectrum E26 BR30 LED Bulbs. These products feature a high CRI and are dimmable. That being said, this product is not flicker-free.

What about the filament bulbs? I know it's not flicker-free (I have some of the BR30s from my old apartment already, but these are def fully enclosed)

Yes. We can confirm that A19 filament bulbs are suitable for use in enclosed fixtures and damp locations.

Flicker Free LED Strip Lights

Do you offer LED strip lights that are flicker-free? I'm considering Filmgrade White LED and Absolute Series LED strips. Are these flicker-free? Am I correct in assuming that the benefits of the Filmgrade flicker-free dimmer apply only when the light is dimmed and not at 100% output?

When any of our LED strip light products are paired with the FilmGrade™ DC Power Supply for LED Strip product, they gain the ability to be flicker-free.

When the LED strip light products are paired with both the FilmGrade™ DC Power Supply for LED Strip as well as the Flicker-Free LED Dimmer, they gain the ability to be both flicker-free as well as dimmable.

In this configuration, the LED strip lights will remain flicker-free at any level of dimming, from 0% to 100%.

Do you have a high CRI 48" 5000k T8 LED tubes replacement with no PWM flicker?

I am currently looking for replacement 48" 5000k T8 LED tubes for my office. I want something with a high CRI and also no PWM flicker. I see your company has two listings. "CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free T8 LED Tube Light" and "NorthLux™ 95 CRI T8 LED Tube for Art & Studio" Is there a difference between the two? How "Flicker-Free" are they?

Our 5000K high CRI, flicker-free LED tube lights sound like a great fit for your office space!

As mentioned, the two products that have the same part number listing are indeed the same product. They have been listed on separate product pages for marketing purposes, and we do apologize for the confusion caused.

Our T8 lamps do not use PWM as they are not designed to be dimmable. As such, their flicker % is kept to below 2%. (All PWM dimming systems have a 100% flicker rate). In addition to photometric testing, we also periodically perform tests using a smartphone's slow motion video capture mode and can confirm that we do not observe any flashing behaviors associated with non flicker-free lamps.

Also, our test report for T8 LED tube light in 6500K shows the measured flicker values of 2% and a flicker index of 0.00. The electronics of the 5000K are the same and we would expect similar, if not identical, flicker metrics.

One additional factor to consider would be whether or not a fluorescent ballast is installed and used in the current T8 fixture. For our lamps, eliminating the fluorescent ballast can be a sure-fire way to ensure that the ballast is not introducing any extra voltage or current fluctuations that can lead to additional flicker.

FilmGrade Flicker-Free LED Dimmer Specs and Wiring

1) What is the switching frequency? Your info suggests 25 kHz, but you have no spec for that on your product page.

2) Is +, -, or neither common to input and output? I am installing it in a fixed installation, where the number of available conductors is limited. Do I need to run both +/- output wires to the load, or can I run the switched output wire to the load, and tap off one of the input wires (whichever is common) as the other conductor?

To answer your questions:

1) The switching frequency for the product is 25 kHz.

2) The output uses a common positive, and the switching occurs on the ground channel. The article and graphic below may provide you with some additional insights on this:

Flicker-free full-spectrum lighting for autism?

We have been reading that flicker-free and full-spectrum lighting might help with autism. What would you recommend?

We currently do not have any internal data or testing to verify this, and our lamps are neither approved nor marketed for treating any medical conditions or disorders.

On the other hand, there are several published studies which have linked stroboscopic flicker to autistic behavior, along with a range of other symptoms such as seizures, fatigue, eye strain. Flicker-free lighting may be an effective approach to reduce or eliminate the amount of flicker present in an indoor space and assist in promoting a healthier lighting environment.

The link between full-spectrum lighting and autism appears to be less established. Full spectrum lighting is a relatively vague marketing term, but the general idea behind it would suggest that a full-spectrum lamp provides a light spectrum that better approximates natural daylight. As such, the use of high CRI lamps (a better way to quantify "fullness spectrum") may be an effective way to introduce lighting that more closely resembles natural daylight, especially during daytime hours.

Waveform Lighting offers both flicker-free and 95 CRI LED lamps which may be an excellent options to consider. See below for our CENTRIC DAYLIGHT products, which can be used in a variety of residential or commercial (as well as classrooms and offices) locations:


Are your LED strip lights flicker-free?

I see your CENTRIC HOME™ A19 bulbs are rated as flicker-free. I don't see the same designation for your LED strip lights. Are they also flicker-free?

All of our LED strip lights are flicker-free, when used with a flicker-free power supply. The reason we do not show a flicker-free rating for our LED strip lights is due to the fact that flicker performance with third-party power supplies depends on the power supply unit, rather than our LED strip lights.

Our own power supply units and dimmers provide flicker-free power and are an excellent choice for our LED strip lights. You can be assured of flicker-free LED strip light performance with any of the following combinations:

LED strip light + TRIAC dimmable power supply + third-party wall-switch (no dimming)LED strip light + TRIAC dimmable power supply + third-party wall-dimmer (see compatible list) | LayoutMap™ 3001-1ALED strip light + FilmGrade™ Power Supply (no dimming) | LayoutMap™ 3002-3CLED strip light + FilmGrade™ Power Supply + FilmGrade™ LED Dimmer | LayoutMap™ 3002-2DLED strip light + FilmGrade™ Power Supply + FilmGrade™ DMX LED Dimmer / Decoder (for film & theatrical applications)

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