This circuit provides an output voltage with approximately twice the input using two power transistors and a voltage doubler. The circuit is from a 1970 EDN.
Found in a 90s Popular Electronics, this circuit can power a miniature railroad with voltages of 15...
ON Semiconductor Phototransistor Output Optocouplers Available from Mouser Electronics is the...
This circuit supplies a voltage of 110 V from car battery with 110 V x 100 W output. Transformer...