Re: Digitally-controlled pot?


I don't know the 'Bowden circuit' but digitally controlled pots may
not sustain the voltage requirements of many typical dimmer circuits.

Graham

ah, my mistake:

http://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#dimmer.gif

There's 12V across 52K (50K of a pot + 2x 1K). I did some calculations
last night, thinking that standard quarter-watt resistors may not be up
to it... and that entire series chain has about a quarter of a milliamp
running through it, so I'm guessing most DIPs can handle that oompf.

However, I'm on Brendan's link at the moment, sussing out the differences
between each option (hell- there's so many to choose from!).

Guess I'll google around for a suitable circuit that contains one of
these driving a 50K digi pot.
.