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 circuit was suggested by Texas Instruments in a manual of operational amplifiers. Other...
Found in American documentation from the 1980s, this circuit shows how to use an LM3909 pulsator in a...
This circuit was found in an Elektor from the 90s. The integrated circuits are not very common...