This power supply uses a single-winding transformer. We found it in July 1984 Radio Electronics magazine. The integrated circuit must be equipped with a heat sink.
This circuit can generate signals from 2 to 15 MHz or 4 to 22 MHz depending on the used components...
This circuit was found in an old French documentation, but it is current if we use the BC547 for...
Small variations in the resistance of the skin of a person holding the electrodes can be detected by...