This circuit with output powers of 2 to 3 W depending on the power supply was found in the magazine Radio Electronics of April 1990. The speakers are 8-ohm.
This multivibrator has its frequency controlled by a crystal. Other frequencies can be generated by...
This circuit was suggested by a Radio Shack publication from the 1980s. The purpose of this...
With the help of a signal generator, this circuit makes it possible to test inductors and...