Archive of the former Yahoo!Groups mailing list: ComputerVoltageSources

I was thinking about the full configuration using 16 potentiometers.
8 input presets and 8 input attenuators. That would be enought to make a nice sequencer if
you could read the two banks of pots as voltage values.

There is actually a trick we could use to keep normal function but read the pots as two banks
of 8. It requires one port line and input jacks with normalized switches.

Use the port line to switch a 10 volt reference from the bank of 8 offset pots (where it is
normally connected) to all the input jacks switch inputs.

This shuts off the offset pots and allows the 8 attenuator pots to be read as voltage values,
while still serving as attenuators under normal circumstance (something plugged into the
input jack).

The offset pot summer values would change to 200K, instead of 301K if the offset pots were
connected to +15V.

Just thought I'd mention it in case Harry thinks it is worth the extra effort.