Institute Newton C. Braga

Circuit Bench

90 dB CMRR Amplifier (CB6637E)
This circuit was found in Raytheon's 1967 documentation. The circuit uses an operating of the era,...
1 W Stereo Amplifier (CB18073E)
This small stereo amplifier is suitable for listening with low impedance headphones with excellent...
144 MHz Walk Talkie (CB19601E)
This circuit was obtained in a European technical publication from the 1970s. The circuit uses...