'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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LASER Diode Driver (CB21010E)
Found in American documentation from the 1990s, this simple circuit excites a LASER diode. The...
Microphone balanced amplifier (CB9388E)
This circuit was found in an old American documentation. The integrated circuit used is uncommon...
LM381 Low Distortion Amplifier (CB25274E)
This circuit was obtained from the February 1990 issue of Radio Electronics magazine. The circuit...