I recently aquired an analog synthesizer module. It is called Super controller 8190. I have the shematics. The ICs are vaguely identified. Could someone please help to identify these? I am uploading schematics.
The lower right saysZ:
Power supply connections to op-amps assumed. A2, A8, A9 mustbe bi-fet op-amps, all others are 741 type op-amps.
Written in ink is IC2 at A1, IC3 at A2, IC4 at A3, IC4 at A4, IC4 at A4, IC4 at A5, IC4 at A6, IC3 at A7, IC3 at A7, IC3 at A8, IC3 at A9, IC2 at A10. I am not certain the handwriting is correct.
The lower right saysZ:
Power supply connections to op-amps assumed. A2, A8, A9 mustbe bi-fet op-amps, all others are 741 type op-amps.
Written in ink is IC2 at A1, IC3 at A2, IC4 at A3, IC4 at A4, IC4 at A4, IC4 at A5, IC4 at A6, IC3 at A7, IC3 at A7, IC3 at A8, IC3 at A9, IC2 at A10. I am not certain the handwriting is correct.