'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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1 Hz to 12 Frequency Doubler (CB13739E)
This circuit was found in an American magazine in 1976. It doubles the frequency of TTL signals in the...
Audio Distribution Amplifier (CB14498E)
This circuit has already been presented from other manufacturers' manuals. This one, specifically, is from...
Harmonic Distortion Meter (CB26187E)
This complex circuit was found in the 1993 edition of the Electronics Experimenter's Handbook. Most of...