To start off, I don't care whether or not I can dim these bulbs, I just don't like the 60Hz flicker they have.

I have LED lights in my apartment with a really annoying 60Hz flicker. They flicker on full brightness, they flicker dimmed, and the ones that aren't connected to a dimmer flicker too.

Is there any type of product I could connect to these bulbs, or daisy chain them off of, that could remove this flicker?

Here is the light:



The funny thing is, I have old Phillips bulb-style LED's from like 2016 that are "non-dimmable" and don't flicker. I also have phillips bulbs that are dimmable and don't flicker.

I can tell these bulbs flicker with my own eyes and I can verify it with the 960fps video my phone can record. The phillips bulbs I mentioned don't even flicker when recorded at 960fps and slowed to 30fps.

 

Is there any type of product I could connect to these bulbs, or daisy chain them off of, that could remove this flicker?

Nothing will help. Return them and buy something that works better.

 

Some people, such as yourself, can apparently see and notice 60 Hz flicker, I can't. I see dl324 posted as I type and I agree. Nothing you can really do about it other than find LED fixture which reduces 120 VAC 60 Hz to a DC level to power the lamps.

Ron

 

These lights are my landlord's so I can't return them, but I am willing to replace them myself and just hold on to these until I move out, and then put them back.

I was about to do exactly this with these:

https://www.amazon.com/gp/product/B072DYK1KC/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1

but they flicker too.....

It seems like my best option would be to find a version of this product that has a driver, or at least a bigger driver than those tiny surface mounted components on the same circuit board as the LED's. I have found a few candidate products, but they are all 3000K but my apartment is supposed to have 2700K according to local code, at least according to my landlord.

 

Go to a local home improvement store and see if they have something you can see in operation. The stores here have displays so you can see before you buy.

 

LED lights that run directly off the AC line will always do the flashy thing. To prevent that one would need to build a complete AC to DC converter into each bulb. That means adding capacitance and capacitors are expensive and prone to failure.

The market just would not support such a beast.

I've converted over just about all of my house to LEDs now. I may have some CFL's about I haven't noticed but think I got them all. The bedroom overhead has decorative bulbs not available in LED, and the LEDs I tried there don't dim off my Leviton dimmer so I leave the Edison types.

I did this despite being one of those that can see the flashy thing.

 

they are all 3000K but my apartment is supposed to have 2700K according to local code,

Where do you live? I've never heard of codes regulating color temperature for indoor lighting. That's crazy!

Mind you, I'm not saying it's not true, just that it would be news to me.

 

I have found a few candidate products, but they are all 3000K but my apartment is supposed to have 2700K according to local code, at least according to my landlord.

I agree the color temperature of bulbs is not a "code" issue. Most probably it is your landlord's preference. 2700K is too yellow for my taste anyway. My preference is closer to 3,000, with 3200 being the whitest I enjoy.

I would love to make an AC line LED power supply that converts the dimming AC wave into some sort of DC signal. Over a certain frequency (200Hz or so) I can't see the flashy thing so even PWM could work. I know that from a LED driver I ounce made where I was limited in the lowest PWM frequency I could make, as I recall that was 200 Hz and unless I vigorously shook the LED I could not perceive and flash.

If I could make it small enough I could put it into the top of the light fixture. Doesn't need much power either, my largest fixture has 6 x 8 watt bulbs for 48 watts, so a 100 W supply would work on everything I have.

 

These lamps flash at 60Hz so they must use a half wave rectifier. This seems very odd. Is it correct?

 

Good LED lamps include a large capacitor to minimize the depth of modulation at the flicker frequency. Clearly these are not among those.

 

Good LED lamps include a large capacitor to minimize the depth of modulation at the flicker frequency. Clearly these are not among those.

You're right. However, this lamp is built to a price point and excludes a capacitor of sufficient value to eliminate this flicker.

 

Good LED lamps include a large capacitor to minimize the depth of modulation at the flicker frequency. Clearly these are not among those.

Citation required. Got one?

 

https://www1.eere.energy.gov/buildings/publications/pdfs/ssl/flicker_fact-sheet.pdf

 

https://www.richtek.com/m/~/media/AN PDF/AN022_EN.pdf

Also, the use of a current regulator can cut down on flicker as can the use of simple Valley Fill and perhaps other types of power factor correction.

 

https://www.richtek.com/m/~/media/AN PDF/AN022_EN.pdf

Also, the use of a current regulator can cut down on flicker as can the use of simple Valley Fill and perhaps other types of power factor correction.

Interesting device. Does any commercial producer of LED lighting use this? Can I go to Home Depot and buy one?

Lately I've been having fun with LEDs around the house. My wife is doing a major (for us) upgrade of the interior and I am adding strip LEDs for some drama.

In the kitchen I want some extra light over the sink work area. I used devices similar to those below in the last spin of the kitchen. Under counter lighting was just evolving so I adapted some 12V IKEA halogen lamps. Unfortunately they would burn out after 2-3 months and were a PITA to replace. I found these LEDs and the first set lasted 5 or 10 years.

Looking for a new set I came across this style. What is interesting is the inductor and capacitor on the backside. No flashy thing!

I bought a set this morning and will try them out in my kitchen when they come.

 

The bedroom overhead has decorative bulbs not available in LED, and the LEDs I tried there don't dim off my Leviton dimmer so I leave the Edison types.

The type of LED I have in my bedroom fixtures are (3 out of 4) LED and (1 out of 4) standard incandescent bulbs. In the video I didn't show the LED's as it was not my intention to show what sort of LED's I had, only that I dim them in the following manor. Somewhere in my house I have LED's that look like the candle stick bulbs. In fact, I know exactly where one is - in my garage, on my heater. Yes, on my heater. I put it there only for the purpose of letting me know in a glance if I turned the heater on or off. (quick back story to that: I don't run the heater all the time. Only when I'm going to be out there in the cold weather. I can forget to turn it off and have it run all night heating a space for no good reason, so I put the light on it so I'd know when it was on. Glancing from the garage door I know in an instant if I forgot to switch the heater off.)

 

To start off, I don't care whether or not I can dim these bulbs, I just don't like the 60Hz flicker they have.

I have LED lights in my apartment with a really annoying 60Hz flicker. They flicker on full brightness, they flicker dimmed, and the ones that aren't connected to a dimmer flicker too.

Is there any type of product I could connect to these bulbs, or daisy chain them off of, that could remove this flicker?

Here is the light:
View attachment 167531
View attachment 167532

The funny thing is, I have old Phillips bulb-style LED's from like 2016 that are "non-dimmable" and don't flicker. I also have phillips bulbs that are dimmable and don't flicker.

I can tell these bulbs flicker with my own eyes and I can verify it with the 960fps video my phone can record. The phillips bulbs I mentioned don't even flicker when recorded at 960fps and slowed to 30fps.

Phillips LEDs include a capacitor to greatly reduce flicker. Go to that lighting store “Kroger” and buy Phillips bulbs!

 

Cheap Junk LED bulbs will flicker because poor quality is cheaper. And trying to power LED bulbs made to operate from AC will probably not work.
So you are better off just providing your own bulbs with the color temperature that you choose.

There is a whole line of thinking among some folks that somehow any hint of blue light is bad for us because it is not restful. Evidently those folks do not believe in work, which is mostly not restful. This does lead some to try to force their wants upon those who do need to work, hence that "code requirement".

 

Phillips LEDs include a capacitor to greatly reduce flicker. Go to that lighting store “Kroger” and buy Phillips bulbs!

Couple things: first, Welcome to AAC.
Next, this thread is almost six years old. Not likely going to get much response from the TS (Thread Starter).
Finally, your eyes can not see 60Hz. Your TV screen has a refresh rate of either 60 or 120 times per second. The higher refresh rate gives motion a more realistic appearance whereas the lower can tend to have ghost images following a moving object. When you go to the movies you're watching approximately 30 frames per second and you don't see flicker. So flicker has more to do with the quality of the lamp than the source that is powering it.
But welcome to AAC.