Institute Newton C. Braga

Circuit Bench

Balanced Telephone Transmitter (CB24500E)
This circuit is from Radio Electronics from April 1977. The circuit is for analog lines using...
Transmission Line Tuner (CB4195E)
With this circuit it is possible to improve the standing wave ratio (SWR) of a transmission system with...
NiCad Charger (CB7525E)
This circuit was found in a 1982 Maplin magazine (England Component Store). The circuit has...