Lead Acid Battery Charger (CB26301E)

This power charger was found in a 1990s issue of Popular Electronics. Integrated circuits must be equipped with a heat sink.

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Temperature to frequency converter (CB7325E)
This circuit was obtained in a Radio Electronics of the 90s. The circuit uses an integrated circuit...
Astable Multivibrator (MSB016E)
This is the traditional configuration of na Astable Multivibrator using two NPN ttransistor....
Current Bias JFET (CB26248E)
Found in the 1995 Encyclopedia of Electronic Circuits volume 5, this circuit has a constant...