Integrator with bias compensation (CB20991E)

This circuit was found in a Popular Electronics from the 90's. It can be implemented with equivalent operational amplifiers.

Voltage Follower (CB4897E)
In a voltage follower the gain is unitary. Input impedance is too high and output impedance too low....
Amplifier ICML8063 (CB15368E)
The integrated circuit and configuration are uncommon. However, the sound quality is good. The...
Contrast sensor with LDR (CB23577E)
This circuit had its assembly described in Radio Electronics from July 1964. The circuit uses LDRs...