Voltage Converter

How to make a 12v DC to 9v DC power converter.

This converter is particularly useful for working with Arduino boards which boards, if you wish to  use an external power supply rather than the 5 v  USB connection.

The circuit is simple to assemble.

Materials Required

1  LM7809

2  100 uF Capacitors

2  0.1 uF Capacitors

Vero Board



schematic 12v to 9v converter
schematic 12v to 9v converter

The circuit is simple.  The image below shows how it is wired on the Vero board.





12v to 9v convrter
The board as assembled per schematic

You can add an LED on the output side as a power on/off indicator








This project is one of our tutorials related to Arduino Projects.

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