Bass control (CB8722E)

Found in a 1993 Electronics Hobbyst Handbook, this passive circuit can be used with common preamplifiers and amplifiers.

1W Amplifier (CB6293E)
The PA222 integrated circuit used in this project from an American 1967 documentation is not...
Infrared Alarm (CB16907E)
This circuit with an optical path sensor was found in a 1995 documentation. The circuit fires...
50 ohm line booster (CB6221E)
This circuit was found in an 80's Electronic Design. It amplifies TTL fast signals for a coaxial...