12V to 3V convertor – Schematic Diagrams


12V to 3V convertor Schematic Diagrams      Comments Off on 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)

12V to 3V convertor

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

 

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