reducing 12v to 6v

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Don ellis
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reducing 12v to 6v

Post by Don ellis » Wed Oct 02, 2019 6:49 am

I have a model a aooga horn I want to use. What's the best way to knock it 12 down to 6? besides putting a 6v battery in.
thanks

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Henry K. Lee
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Re: reducing 12v to 6v

Post by Henry K. Lee » Wed Oct 02, 2019 7:03 am

A Dodge style ballast resister from the 1960’s works good.

Hope this Helps,

Hank

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Cambin
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Re: reducing 12v to 6v

Post by Cambin » Wed Oct 02, 2019 7:14 am

Hi Don I have done this with a piece of 0.8 mm stainless welding wire and cut about a foot and a half off and wound it around a half inch drill shank ant tried it then kept cutting it back until I got the right resistance
Attachments
image.jpg
image.jpg

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Henry K. Lee
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Re: reducing 12v to 6v

Post by Henry K. Lee » Wed Oct 02, 2019 7:37 am

Works well Cambin!

Hank

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Cambin
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Re: reducing 12v to 6v

Post by Cambin » Wed Oct 02, 2019 8:35 am

Yes hank works well

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John.Zibell
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Re: reducing 12v to 6v

Post by John.Zibell » Wed Oct 02, 2019 10:54 am

or just make a simple voltage divider. Two resisters of the same value, and tap from between them. Just be sure they can carry the current.
1926 Tudor


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Don ellis
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Re: reducing 12v to 6v

Post by Don ellis » Wed Oct 02, 2019 1:27 pm

Thanks guys, I’ll be trying some of these.

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George N Lake Ozark
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Re: reducing 12v to 6v

Post by George N Lake Ozark » Wed Oct 02, 2019 6:13 pm

I found this online at autozone
929FC1E2-5A5F-4ABD-A2F1-8695CCEEFAB1.jpeg[/attachment Also found this online at a rat rod supply, haven’t tried tried yet . [attachment=1]929FC1E2-5A5F-4ABD-A2F1-8695CCEEFAB1.jpeg
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A1111E00-3DF6-47D8-9E19-D7B4619EEBD2.jpeg
929FC1E2-5A5F-4ABD-A2F1-8695CCEEFAB1.jpeg


art32mor
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Re: reducing 12v to 6v

Post by art32mor » Wed Oct 02, 2019 8:05 pm

Double resisyer will do it
A parts guys sell a unit ready to go
VW guy have one as well

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Matt in California
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Re: reducing 12v to 6v

Post by Matt in California » Wed Oct 02, 2019 9:08 pm

I have used wire like Hank above. I have also used a resistor (see picture). Depending on the current draw resistance values may need to be changed. A voltage divider with equal value resistors would be problematic for something drawing a lot of current. If the Horn drives around 1 Amp at 6 volts, a one ohm series resistor will drop 6 volts. I had a .6 ohm resistor handy it dropped about 4 V leaving 8 V on the horn.
ED67F291-09FE-4249-8613-0D796474D074.jpeg
44A622E7-A7EF-4AF5-80B3-4356CDAE579E.jpeg

Matt

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