Battery Charger (CB6394E)

We found this circuit in a 1968 Electronics World. The potentiometer should be set to trigger the SCR when the battery is fully charged.

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Siren for motorcycle (CB6491E)
This circuit is from a Popular Electronics of the 90's. Any power MOSFET can be used. The circuit...
Linear ramp generator (CB10041E)
This circuit was found in a Motorola documentation from the 70s. The components are from the time,...
Simple sample circuit (CB8874E)
Based on common unijunction transistors, this 1968 General Electric circuit is powered by 12 V. |...