redusing power output form 12v to 9v

[reddragon]

     Jon I'm whating to hook a cam to The Board so that i can. 1 turn it on and off, also 2 have it powered off and on my my controller the output is 12v and the cam is 9volts so i need to cut the output power down to a 9 volt supply how can i go about reducing the power???

[JonnyMac]

The only reliable way is with a regulator circuit -- the 7809 is easy to use and you can get them anywhere.

http://www.fairchildsemi.com/ds/LM/LM7809.pdf

I get my parts from Mouser:
-- http://www.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMtUqDgmOWBjgC5jv%252bsRCBsGpR4JL8812Nc%3d

That regulator costs a whole $0.26!

[reddragon]

 Jon i cant view the sheet that shows how to hook it up so is there a way i can finded out how to do it some other way??????

[JonnyMac]

It's a standard PDF -- you might try right-clicking and downloading; you should have that information.  Or... do web search on LM7809 and see what you come up with; you might find a circuit in graphic form.