Found in a 90s Popular Electronics, this circuit can power a miniature railroad with voltages of 15 V and currents up to 1 A. The circuit has soft start effects.
The figure shows a typical circuit of a variac with a special transformer with sliding adjustment of the...
This amplifier for audio transmission lines was found in a 1961 American publication. The critical...
This different audio amplifier was found in a 90's Electronic Design. The circuit uses components...