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Home /  Support Center /  Knowledge Base /  A19 Bulbs (60 watt equivalent) /  Which of your products are flicker-free and how they compare on an oscilloscope to the Phillips product?

Which of your products are flicker-free and how they compare on an oscilloscope to the Phillips product?


Can you tell me which of your products are flicker-free, and how they compare on an oscilloscope to this Phillips product: 

Philips LED Dimmable Warm Glow Effect A19

I liked your oscilloscope comparison at this article and I'm wondering how yours and the Phillips one compare. One of my kids is very sensitive to flicker, so I want to try to figure out what's best for him.

While we do not have oscilloscope readings for all of our products, we can confirm that our standard A19 and A21 bulbs feature flicker-free output. 

Though currently out of stock, our 24V CENTRIC SERIES™ Flicker-Free Dimmable Power Supply for LED Strip is also able to provide flicker-free output for 24V LED Strip Light products. 

From our review of the Philips product, they appear to provide flicker-free output as well. That being said, it does not appear that the CRI is listed on the product listing. 

Generally speaking, our LED technology uses red phosphor in order to create a high CRI output of 95+. The larger brands often use the far less expensive yellow phosphor, which typically provides a maximum CRI of about 80. 

As a further note, you can tell from our photometric test reports page that our A19 bulbs have a flicker percentage of 0%, and have a flicker index of 0.00. As such, we would not expect them to provide any flicker while operating. 

That aside, if you would like to try and compare our products, please feel free to take advantage of our 30-day return policy. We will gladly provide prepaid return labels so that items from domestic orders can be returned for a refund. 

We need flicker-free for one of my kids so I'm looking at your CENTRIC HOME Flicker-Free A21 LED bulbs. We're testing them in a 300-square-foot room that has four bulb sockets and no dimmer circuit. Usually with four 60W bulbs we feel like it's a bit dark in the room.

On the other hand, with the Phillips flicker-free product I mentioned below (60W; I believe it's 2700K with no dimmer) my wife says the Phillips bulbs hurt her eyes. I know that's a little vague, but which of your products would you suggest I try first: 2700K or 3000K, and 60W or 100W? 

By room size I'd think 100W, but we don't know what makes the Phillips bulbs hurt my wife's eyes, and she's worried about going brighter if the 60W Phillips bulbs already hurt.) I'm hoping that as an expert you might have a better chance at pinpointing what we need first-try than I would as a non-expert.

Based on my use of the Lumen Estimation Calculator, it appears that a 300 square foot room would be fully illuminated by 3,188 lumens. As each of our A19 lightbulbs outputs 800 lumens, we would likely recommend using four of our 2700K CENTRIC HOME™ Flicker-Free A19 10W LED Bulbs. For reference, 800 lumens is equivalent to a 60-watt incandescent bulb. 

We like to define glare as the contrast between the darkest point in a room and the brightest. If a light source is considerably brighter than the surrounding area and does not use any type of diffusion covering, the light output can feel stark and relatively intense. If that glare is a persistent issue, we recommend utilizing a fixture that has a covering for diffusion, which should hopefully help to reduce the effect.

While we might recommend our 2700K Ultra High 95 CRI A19 5W LED Filament Bulb for Home & Residential as an alternative given the relatively lower lumen output per bulb (450 lumens vs 800), these products are not flicker-free and as such may not be the best option for your installation. 


Question posted under:

LED strip lightsA19 Bulbs (60 watt equivalent)A21 Bulbs (100 watt equivalent)Flicker free


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