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.

Constant Current Source II (CB19950E)
The operational used is uncommon today, but equivalents can be used. Unlike the previous one, this...
Clock alarm timer (CB21290E)
Found in Popular Electronics from the 90's, this circuit uses common components and can be easily...
TLC272 Peak Detector (CB11540E)
We found this circuit in Texas Instruments' Linear Circuits Applications. It is a peak detector whose...