The two integrated circuits used in this configuration can still be found. The frequencies of the effects are determined by the capacitors, which may have their values changed.
This circuit generates a signal for double conversion receivers. The signal has the frequency...
a This very low voltage regulator supports input voltages from 1.7 V to 5.5 V and is suitable for IoT...
This timer, using the ZN1034E, is from a May 1987 Radio Electronics magazine. The circuit can...