This compact power supply can be used on the workbench for up to 1 A load. The transformer has 1 A secondary current. The integrated circuit must be mounted on a heatsink.
The transistors of this circuit found in an English 1980s documentation may be the modern BC548...
This circuit causes an incandescent lamp to flash according to the input audio signal. The SCR...
This circuit was found in the 1990 Motorola Linear Databook and can use almost any operational...