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reducing 12v to 6v
Posted: Wed Oct 02, 2019 6:49 am
by Don ellis
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
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 7:03 am
by Henry K. Lee
A Dodge style ballast resister from the 1960’s works good.
Hope this Helps,
Hank
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 7:14 am
by Cambin
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
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 7:37 am
by Henry K. Lee
Works well Cambin!
Hank
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 8:35 am
by Cambin
Yes hank works well
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 10:54 am
by John.Zibell
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.
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 1:27 pm
by Don ellis
Thanks guys, I’ll be trying some of these.
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 6:13 pm
by George N Lake Ozark
I found this online at autozone
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Also found this online at a rat rod supply, haven’t tried tried yet .
[attachment=1]929FC1E2-5A5F-4ABD-A2F1-8695CCEEFAB1.jpeg
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 8:05 pm
by art32mor
Double resisyer will do it
A parts guys sell a unit ready to go
VW guy have one as well
Re: reducing 12v to 6v
Posted: Wed Oct 02, 2019 9:08 pm
by Matt in California
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.
Matt