This circuit was found in a 1968 documentation. The circuit generates three rectangular signals from a 400 Hz sinusoidal input. The circuit is suitable for applications in power controls.
Found in Radio Electronics this circuit uses a fotodiac to drive a triac. The circuit can use...
This circuit was found in an Electronics Now from the 90s. The frequency depends on the crystal. The...
This power supply for gas laser was obtained in an American documentation from the 90's. The...