This is a small transistor receiver for the medium wave range made in Japan in the 1960s. The circuit is powered by 9 V and has an output power of 25mW.
This power converter or inverter was found in a 1980s documentation. Transistors should be fitted...
This circuit consists of a voltage regulator for 6 V batteries with a very low voltage drop. The...
I found this circuit in an English magazine from July 1982. The circuit is still viable by using...