CA3080 Amplifier (CB25131E)

This amplifier with an OTA has a gain of 40 dB. The power supply must be symmetrical. Found in Radio Electronics, May 1988.

Analog switch (CB21253E)
This circuit was found in an Electronic Design from the 90s. Operational amplifiers admit modern...
Power Zener (CB216E)
Using in operational amplifier is possible to increase the dissipation power of a zener. This...
Power Grid C with Optocoupler (CB16025E)
With an optodiac we have the circuit of the figure, suggested by MotoroIa, in which we do the...