This high current regulator with low voltage drop was found in the datasheet of the used integrated circuit itself. The transistor accepts an equivalent and must be provided with a heat sink.
This circuit is from an English magazine from 1980, but it can be easily assembled with more...
Found in Philips' 1968 documentation, this circuit serves as a 6.3 V reference for high stability. |...
In critical applications of the RS-232 interface, the danger of induced voltages in the cables must...