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 circuit only works with incandescent lamps and the frequency is adjusted in the pot,...
We found this circuit in an old English publication. The sensor is a common LDR. and the...
This circuit can be used to control loads up to 500 mA from the outputs of microcontrollers such...