From yahoo Sent Wed, Jun 4th 2014, 15:21
From yahoo Sent Wed, Jun 4th 2014, 15:21
> Hello to everyone,
>
>
> I'd like to change my A-176 potentiometers for slide pots (that I
> would attach to another front panel), but after a long search I
> can say that it's very difficult to find the right knob for the
> right slidepot.
> Eventually I just found that Livid Instruments sell very good
> slidepots and the corresponding knobs, but they are 100k
> slidepots, and the A-176 pots are 50k.
> Could you please tell me if there is something simple that I can
> do to make my A-176 modules to work as expected with 100k pots
> instead of 50k ones?
> If I only need to change a few resistors and / or capacitors it's
> no problem for me.
>
>
> Thanks in advance and have a nice day.
> Thomas
In the A-176 the potentiometers are used as voltage dividers (connected
between GND and 12V). Consequently the module should also work with 100k
potentiometers. But as input resistor of the circuit is 100k the CV scale
will be not exactly linear but follows the characteristic of P parallel to
100k (with P = current value of the potentiometer = 0...100k, the exact
formula is 100k*P/(100k+P)). If linearity is important you may have to
change some resistors.
Best wishes
Dieter Doepfer
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