The power supply for this circuit must be symmetrical at 12 + 12 V and the load must be 8 ohms. The circuit is from the 1982 SGS Linear Integrated Circuits Manual.
This small blocking oscillator for approximately 1000 Hz was found in an American documentation from the...
This circuit for activating a relay was found in a Radio Electronics magazine from August 1962. The...
In this circuit found in the December 1972 Radio Electronics magazine. R can be from 1k to 22k,...