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Dimmable LEDs do dim. And good LEDs don't flicker. LEDs run on DC, so connected to AC power they need to turn that into DC. If you do that without a capacitor
by mcv 3y ago
Dimmable LEDs do dim. And good LEDs don't flicker.
LEDs run on DC, so connected to AC power they need to turn that into DC. If you do that without a capacitor to smooth things out, you get flicker, which may be the case in cheap LEDs, but good LEDs will have a capacitor and therefore not flicker.
A LED lamp consists of many individual LEDs. Dimming a LED lamp involves turning off some of those individual LEDs, rather than supplying less power to each of them. A LED lamp needs to explicitly support that or it won't work. But those LED lamps exist. Similarly, LEDs that only produce dim light for situations where you only want dim light, exist.
- throwaway290 3y agoLook, you are saying many things that can work in theory, but in practice all LEDs I have seen that cost reasonable money dim using PWM and have detectable flicker. I know "good LEDs" exist but if we are talking a few dozens of dollars per good photography-grade LED fixture then we are at a point where the savings compared to running a dirt cheap regular bulb approach zero or even go negative. At least in reasonable time periods, maybe such good LEDs are cheaper in the very long run but that's not for sure (faulty units exist) and even if it was I probably wouldn't even live that long.