2 ms·
Without some kind of driver, the light flickers strongly at 120Hz. For sensitive people, the effect is extremely unpleasant. One can get perfectly nice drivers
by amluto 4y ago
Without some kind of driver, the light flickers strongly at 120Hz. For sensitive people, the effect is extremely unpleasant.
One can get perfectly nice drivers and perfectly nice LEDs for less than $25 all in. Sure, many people prefer paying less for a screw-base lamp, but the result is not as good.
- CapstanRoller 4y agoLED filament bulbs do indeed use a driver circuit. Some use a voltage above mains [1] while others drive the LED chain around mains voltage but in a smoother regulated way [2]. Sometimes there's just a basic dropper cap circuit, though. Those flicker but not too badly. The LED design in these is different than in a discrete LED, with the phosphor being quite thick and having a distinct slow fade/afterglow when switched off. I think in this case they basically use the phosphor to smooth out flickering instead of electronics. [1] https://youtu.be/t3HpPikRDeY?t=279 https://youtu.be/t3HpPikRDeY?t=279 [2] https://youtu.be/nMc6mjE9Y1s?t=447 https://youtu.be/nMc6mjE9Y1s?t=447