LDR experiments & questions

[Ingo Debus]

Martin Czech wrote:
> 
> The next thing I will have to check is if the circuit is more effective
> with red, yellow or green leds. It should be the green ones, since for
> all ldrs I know the maximum light dependence is at 500nm wavelenght.
> On the other hand: red leds tend to be much brighter at the same
> current...

Did you use "normal" LEDs or extra bright ones? I replaced the bulb in
my CV pedal with an extra bright red LED which works fine. I tried two
normal red LEDs first, they were not bright enough.

Ingo