Non Inverting Amplifier (CB6433E)

Based on an operational of the time, this Popular Electronics circuit can be designed with any equivalent operational.

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Undervoltage Detector (CB6524E)
Found in a 1980s documentation, this circuit detects when the voltage drops below 11 V. Other...
Zero Crossing Detector (CB4000E)
This detector is from the 1990 Motorola Dataar Databook, but can be adapted to work with more...
2 A Charger (CB6395E)
This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit...