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.
In this circuit the output current is limited by R3. For a 300 mA current, R3 must have 12 Ω. For...
Found in Radio Electronics from the 90s, this circuit produces pulses to test an infrared...
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...