Found in a publication by National Semiconductor, this circuit provides an output voltage of 3.3 V, ideal for supplying microcontrollers. The maximum current is 500 mA.
Texas Instruments ESD122 Electrostatic Discharge Diodes (ESD) can be ordered from Mouser...
This circuit was suggested in a 1976 documentation. We can use the pair BD135 and BD136 on the...
This interesting circuit found in an Elektor from the 90s controls loads in four quadrants of the driving...