Who is the fast (CB9809E)

This simple TTL circuit indicates which was the first to press one of the four pressure switches. The circuit must be powered with a voltage of 5 V.

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Metronome 555 (CB18474E)
This 1974 circuit uses two 555 integrated circuits in a very traditional configuration. The...
Self-biasing JFET stage (CB25566E)
This circuit was found in Electronics Now magazine and can be applied to any JFET. The circuit has high...
FM receiver with BC548 transistor at output (CB23552E)
The receiver shown above was sent in by contributing reader Adriano Muniz Moura and is used for...