Institute Newton C. Braga

Circuit Bench

LED Binary Counter (CB4345E)
This circuit came out in an American magazine that no longer exists. It's the Electronic...
Single transistor receiver (CB22568E)
This receiver was found in the Radio Electronics magazine of March 1953. It tunes to the medium wave...
Low Frequency Mixer (CB14220E)
The presented circuit uses an LM3900, transconductance operational amplifier. It was found in the...