Amplifier for photodiode 1 (CB6787E)

We found this circuit in Harris' 90s documentation. The circuit applies to modern operational amplifiers.

Voltage Controlled Oscillator (CB12016E)
This VCO or Voltage Controlled Oscillator uses common components. TR1 can be a BF245 and TR2 a...
Sound Effects Center (CB17485E)
The transformer for this project found in a 1986 documentation is an output type, found on old...
Regulator Crowbar Protection (CB13916E)
We found this circuit in a 1978 documentation. The SCR conducts when the regulator's output...