'Push button memory (CB7243E)

This circuit was found in an American documentation from 1969. The circuit memorizes when a command pulse activates the relay.

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Weak Signal Differential Detector (CB6665E)
This circuit was obtained from a 1966 documentation. The transistors are of the time. The circuit...
Booster Supply CIR5872S (CB19258E)
This circuit is a source that allows antenna boosters to be powered by the signal cable itself, as shown...
LED Strobe (CB22126E)
In this very simple circuit, the LED flashes at a frequency of 60 Hz. It is convenient to check the...