Commercial Radio TR26 (CB18383E)

This 6 transistor TR26 commercial radio was sold in Japan in the 60s. It is a super heterodyne circuit powered by 9 V with push-pull output.

Gain 20 LM386 Amplifier (CB25296E)
This circuit was found in the March 1990 issue of Radio Electronics magazine. The circuit can be...
Electronic trigger (CB8303E)
Found in a 1980s English magazine, this trigger circuit can have different types of inputs...
Negative Peak Detector (CB5166E)
We find this circuit in an American manual from the 80's. The circuit can be implemented with more...