This simple source uses two 2N3055 transistors that must be equipped with good heat sinks. The source has no protection, only an input fuse. The diodes are for 5 A x 50 V or more.
This circuit is suggested by the National semiconductor and is based on an increased power...
The setting of this power supply is only 0.1%. We found it in a 1969 US documentation. Transistors...
This circuit amplifies signals from 0.5 Hz to 300 kHz. We found it in an old documentation. Equivalent...