Found in the December 1974 issue of Radio Electronics, this circuit is similar to the previous one, only using another TTL counter. The circuit must be powered by 5 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...