This circuit operates at a frequency of 80 KHz and modulation up to 60 kHz. The circuit is from 1980s documentation. The PUT is an uncommon component today.
Found in a 90's EDN this circuit can be used as a shield. The transistor is a general-purpose type and the...
This circuit was found in the November 1992 issue of Radio Electronics magazine. The circuit has...
This circuit was found in an American documentation from 1977. The circuit can be implemented with modern...