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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9 W amplifier (CB18562E)
This 9 W amplifier with transistors from the 60's was found in documentation of the time. The...
Cycloid adapter (CB6908E)
The purpose of this 1965 Radio Electronics circuit is to observe cycloid waveforms on a standard...
Light Alarm (CB24237E)
In this circuit found in the December 1972 Radio Electronics magazine. R can be from 1k to 22k,...