Half Wave Fast Rectifier (CB5160E)

This 80's circuit can be made with current comparators. Rectification accuracy is 1% DC up to 100 kHz.

AM or FM Signal Clipper (CB4183E)
This clipper or limiter circuit limits the amplitude of AM or FM audio signals. The diodes are...
Varicap Beat Oscillator (CB25649E)
The varactor or varicap diode tunes the signal for listening to SSB signals on a common receiver. The...
Car Sequential Flasher (CB4970E)
This circuit is based entirely on SCRs. The circuit is from an American 80's documentation; and the PUTs...