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.
You can measure capacitances across a large range of values using the AC Power line frequency as...
This circuit had its assembly described in a Radio Electronics from March 1963. The circuit uses 2...
This transmitter for the 2-meter range with a power of 1.5 W was found in a magazine 73 for radio...