Found in a 90s Electronic Design, this circuit is used with a 9 V adapter for powering small circuits. The maximum current is given by the 250-mW regulator.
We found this circuit in an article in Electronics Now magazine from November 1997. The circuit uses...
This circuit provides just over ½ W to a small speaker. We found this configuration in an old...
In the figure we have a typical relaxation oscillator with a SIDAC as well as waveforms and...