This inverter circuit with transistors provides a voltage of 300 V from a 12 V supply. The current, with the original transistors, is only 55 mA. Transistors must be mounted on heatsinks.
This sensitive circuit can be designed with FETs such as BF245 and MPF102. The sensor is a silicon...
Found in Popular Electronics from the 1980s, this circuit generates low distortion sinusoidal...
This receiver of two transistors for the 3.5 MHz band was found in a circuit manual from the 80's....