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.
This circuit was found in old documentation, however the components used are common today. The...
This circuit is from a 1964 Electronic Design. The sensor is an LDR and the transistors are...
This circuit from Delta Products was published in the May 1974 Radio Electronics magazine. The...