This converter has coils according to the reception and converted frequency bands. We found it in the October 1989 Radio Electronics magazine in an article that teaches its construction.
This shield circuit was found in an American publication from the 80's. The triac is of low...
In this circuit of a 1978 publication, the noise generated at the collector-base junction of any...
This circuit is from a year 2000 documentation. It generates pulses as fast as a battery or as...