This circuit uses only transistors and was found in a 2003 documentation. Transistor 2N3055 must be mounted on a heat sink and the voltage is set to R10.
This instrument was obtained in a documentation for radio amateurs of 1976. The circuit measures...
This circuit was found in a computer publication from the 1970s. The transistors can be the BD135...
September, 2017 - Mean Well DC-DC regulators from 10 to 30 W are already available on Mouser...