To get a more precise output voltage, replace zener diode Z1 with 10V and R1 with a 1Kilo ohm potentiometer. A Coolrib for Q1 is optional but highly recommended. You can replace Q1 for a more robust ...
Makers, hobbyists and developers that are looking for a way to use USB ports to provide constant 9V or 12V power supplies may be interested in a new device created by FemtoCow called the USB 912. The ...
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