Two Transistor (Boys Radio) Schematic and Theory of Operation


Posted on Feb 6, 2014

It has been interesting analyzing these radios. You have to give the Japanese credit for even making a radio that can drive a speaker with only 2 transistors! Basically, the first transistor (Q1) performs double-duty. It first acts as an RF amplifier, with some of the signal being fed back to the antenna coil to provide some regeneration for better selecti..


Two Transistor (Boys Radio) Schematic and Theory of Operation
Click here to download the full size of the above Circuit.




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