[sdiy] Vactrols

[jays at aracnet.com]

Tim,

On one of the HP app notes that I have looked at for doing LED PWM they said that after around 1-2 kHz you do not gain anything as far as power saving. At that point you might as well use linear control. So if that is what you are thinking about then you might not gain anything.

Look into the light!
Jay S.

TIm Daugard <daugard at sprintmail.com> wrote :

> Has anyone tried ultra-sonic pulse width modulation of an LED / LDR
> combination
> instead of varying the current through an LED?
> 
> Tim Daugard
> AG4GZ 30.4078N 86.6227W
> http://home.sprintmail.com/~daugard/synth.htm