Battery Charger (CB26303E)

This automatic battery charger was found in a Popular Electronics from the 90s. The circuit uses a relay for automatic shutdown.

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Integrated Amplifier and Driver (CB24771E)
This 50 W amplifier was found in the November 1983 Radio Electronics issue. The circuit is...
Digital Windshield Wiper Timer (CB24567E)
This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on...
Pass Monitor (CB24892E)
This circuit is from Radio Electronics from March 1985. The circuit uses common components at the...