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Old 03-15-2013, 01:08 AM
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6volt vehicle, how to drop to 5v for mobile phone

I have a 6 volt VW bus and want to use a smart phone as an anti-theft device.

Can anyone recommend a voltage regulator that will provide a safe 5V 1A from a 6 volt automotive system?

The goal is an iphone or android device that is always powered on with 6v system.

Thanks!

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Old 03-15-2013, 04:08 AM
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You may have to make one yourself. Radio Shack sells a 7805 voltage regulator I.C. that puts out 5 volts. Google and You Tube have a lot of information on building 7805 power supplies.
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Old 03-15-2013, 05:30 AM
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Use a USB to cigarette lighter adapter. They drop 12v-13v to the required 5v so it should drop 6v to 5v being the resistor is contained inside. Just check the reference voltage with a DVOM before plugging your phone in
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Old 03-15-2013, 11:12 AM
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Awesome both great ideas. I think I'll try both! Radio Shack is a short walk and I have 2 old cell phones as guinea pigs. Ill post my results.
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Old 03-15-2013, 08:18 PM
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no hippies allowed

Oh no, hippies on the blog.

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Old 03-15-2013, 08:57 PM
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Lol.. im 40, gettin old but hardly a hippie! But I do love my bus! 1966 21 Window.


Well, I bought some stuff at Radio Shack. I geeked out a bit and bought a breadboard and some capacitors based on this excellent youtube,

Im only getting 4.7 unfortunately. I've read about some more efficient regulators so I'm going to order a couple and see how they work out.

PS, Hippies dont do this: http://www.66split.com/66split_NEW/index.htm
My restoration album, each photo is an album, click one.
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Old 03-16-2013, 10:32 AM
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hippie bus

Girls Partying by the Beach with The VW Hippie Bus - YouTube

Sorry I couldn't help myself.

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Old 03-17-2013, 08:33 AM
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I've built a similar regulator for my test bench using a LM317T and two resistors, one being an adjustable resistor that can be adjusted with a small screwdriver so you can zero right in on the output voltage. The 317 can put out up to about 1.5 amps so it may work for you. Plenty of schematics available with a search on LM317T.
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