This circuit has its frequency controlled by a 1MHz crystal. The circuit must be powered by a voltage of 5V. The capacitors must be ceramic. The generated signal is rectangular.
This micropower inverter serves to obtain high voltages with very low current from direct current...
Found in a 1960s documentation, this circuit uses a transistor to drive a relay as well as a set...
This LED light effects circuit is from 1988, but uses common components nowadays. The LEDs are...