Found in American documentation from the 1990s, this circuit can generate signals of up to a few tens of megahertz. The transistor must be suitable for high frequencies.
With this circuit, from an American documentation from 1976, it is possible to measure...
This power supply for model railroad was found in a February 1961 Radio Electronics Magazine. The...
This circuit was found in a Radio Electronics from June 1967. The regulator is suitable for power...