In article ,
NY wrote:
Given that LEDs are usually dimmed by altering the mark:space ratio of a
constant-frequency square wave, so the light is turned on for a
progressively shorter proportion of each cycler,

That‘s not true of all dimmers.

Ah, do some of them simply reduce the current, as you would with
tungsten - though with more complicated electronics?

A normal tungsten dimmer works by altering the shape of the AC waveform -
so not so different to dimming an AC driven LED.

--
*To err is human. To forgive is against company policy.

Dave Plowman London SW
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