In the figure we have a simple way to produce tone in a piezoelectric transducer. The frequency depends on the capacitors and the supply can be done with voltages from 1.5 to 6 V.
The purpose of this circuit is to extend the range of applications from a Darlington pair to DC....
Found in the November 1984 issue of Radio Electronics magazine, this circuit generates frequencies that...
This circuit was obtained from an English magazine from 1976. The signal from the circuit should be...