This source with two symmetrical output voltages was found in 90s Radio Electronics. The 22 V output has a maximum current of 300 mA and the 5 V output has a maximum current of 4 A.
This power supply was found in the same 1990 special issue of Radio Electronics Experimenter...
This crystal radio or modern version of the germanium diode galena radio (of any type) was found in...
This circuit produces the sound of a motorcycle or an outboard motor. The frequency is adjusted in the...