step down transformer build help

[ROLEXrifleman]

looking to step down the 12 volt out from the cig lighter to 5-7 volts so that the device I want to connect doesn't fry.

Any help on how to accomplish this would be greatly appreciated.

Thanks.

[geekybasshead98]

I think you will need something called a 5v regulator. You can look up a circuit design online most likely.
Then you could get one of these and wire it up http://www.ebay.com/itm/12v-Male-Car-Cigarette-Lighter-Socket-Plug-With-Fuse-Connector-Conversion-Outlet-/331079406572?pt=US_Adapters&hash=item4d15ded3ec

Hope I helped, I've never built anything like this but I have watched a few videos online about building electronics.

[Kyblack76]

I know some LED nuts use something similar..

like..

http://www.superbrightleds.com/moreinfo/bar-strip-accessories/12vdc-to-5vdc-voltage-converter-/1549/3652/?utm_source=googlebase&utm_medium=base&utm_content=LVC-12V5-3A&utm_campaign=GoogleBaseChild&gclid=CNK1rqKm678CFQmraQodCoEAuw

[ROLEXrifleman]

Thanks guys. I was overthinking this and looking to build a circuit. Instead I found a couple schematics on making one and after I buy the parts and put the time in it's cheaper just to buy a pre fab one. If I was making more than 5 then it would be worth it. I may also just go through my junk cell phone charger drawer and see if any of those spit out 5-6 volts dc

[Bump4life]

all you need is a 7805. look that bad boy up.

whats your load? depending on the load you may or may not need a heat sink

[ROLEXrifleman]

less than an amp. No heat sink would be needed. I even though about cannibalizing a blown amp if it had any good ones on it!!!!

[gr8handogoatness]

Just as a side note, you cant "transform" DC

[ROLEXrifleman]

As stated a 7805 was all I needed. here's the down and dirty in pics.

Made for less than $5 and built my way. 9-20 volts in with a constant 5 volts out!

BTW, the 1st pic was parts I cannibalized from an old VCR. I ended up buying new parts but the VCR parts would have been fine.

This will do 2 amps max with the heat sink

[Bump4life]

As stated a 7805 was all I needed. here's the down and dirty in pics.

Made for less than $5 and built my way. 9-20 volts in with a constant 5 volts out!

BTW, the 1st pic was parts I cannibalized from an old VCR. I ended up buying new parts but the VCR parts would have been fine.

This will do 2 amps max with the heat sink

looks good man! a lot of devices run on 5 volts dc.