Institute Newton C. Braga

Circuit Bench

Flame Detector (CB17581E)
This circuit detects the presence of a pilot flame in heating systems by the presence of infrared...
Distortion Free Pulse Delay (CB6661E)
This circuit of 1965 documentation makes use of a tunnel diode to retard a pulse without...
Commercial Receiver KT6 (CB18432E)
This Japanese transistor radio was manufactured in the 1960s in Japan. The circuit of 6...