Found in documentation from the 1980s, this circuit uses components from that time. The circuit is used in process control. The power supply is double.
This conventional power supply circuit with the LM317 was found in a 1987 publication and its...
This circuit is from a 1972 German magazine Funkshau. The circuit can use BC548 transistors...
Found in a 1968 Motorola documentation, this circuit operates at 1 kHz and can deliver 20 V from...