This Power supply sources from 500 to 1,000 mA according the transformar and was found in a publication of the year 1958. The diodes can be now the 1N4004 and the transistor should be mounted on a heatsink.
We found this circuit in a 1978 technical documentation. The circuit can be assembled with BC548...
This 6-transistor commercial radio was manufactured in Japan in the 1960s, intended to receive...
This circuit is from an Electronics Now from 1998 and can be easily assembled with other JFET...