Home








Site search
 

 
12V to 3V convertor

This is an simple and cheap circuit to convert voltage from 12V to 3V.In fact this is a basic regulator circuit.The output voltage determined by

Vout = Vzener - Vbe

When
Vzener is zener voltage output.
Vbe is saturate voltage when transistor on (about 0.6V)



Fig 1. 12V to 3V convertor


 2SC1061
 Data sheet for 2SC1061 3A/50V power transistor.

3.6V zener diode
Data sheet for 1N38xx series zener diode

 

Home   Projects   Circuits   PIC Examples   Tools   Software   Book   Circuit links     Blog   Search
© 2005-2008 by www.coolcircuit.com
Content on this site is licensed under a Creative Commons Attribution 3.0 License. | Privacy