This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to interface signals other than TTL circuits with TTL inputs. The transistor can be a BC548, 2N2222 or any equivalent.
Found in American documentation from the 1980s, this circuit can generate signals from 50 kHz to...
This 1-transistor oscillator circuit was found in the March 1965 Radio Electronics magazine. The...
This interesting configuration was found in a 1965s Electronic Design. It makes use of components of...