[sdiy] my first schematic - please critique

[Tim Daugard]

From: "Scott Gravenhorst" <music.maker at gte.net>

> Yes, nice work.  I would add that the resistors R5, R6, R7 and R8 provide a constant
> path for .9 mA to flow just for biasing the + inputs on the opamps.  I'm not familiar
> with the OpAmp you chose, but I'll bet it will take more than 9 volts across it's power
> terminals.  Consider using two 9volt batteries in series (18volts across the OpAmp

R5, R6, R7 and R8 can be increased to 100K to reduce the current drawn by the bias nets.
There should definitely be caps parallel to R6 and R8

Tim Daugard
AG4GZ 30.4078N 86.6227W Alt: 12 feet above MSL
http://home.sprintmail.com/~daugard/synth.htm