Microprocessor supervisor (CB9321E)

This circuit was obtained in a Maxim documentation from the 90's. The circuit applies to microprocessors of the time.

Audio and video switch (CB8512E)
This circuit was obtained from a 90s Radio Electronics. The integrated circuit used HAA11508 is not...
Audio Oscillator (CB15834E)
This article was written by A. Fanzeres in the 1970s. We kept the original text. With the circuit we...
Operational Overcurrent Switch (CB12313E)
We found this circuit in an English publication in 1991. The circuit can be assembled with...