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.
The integrated circuits used in this 1989 project are uncommon today, including the IF coil that...
Found in a 90s Popular Electronics, this circuit uses components from that time, for a...
The figure shows how to control the counting of a 4017 with a start and stop switch. | Clique na...