The Ford Barn

FRANK PKNY · 03-03-2011, 02:04 PM

Can you run a magneto horn on 12V dc power. I realize that they are meant to run on 10 to 28 V ac from the magneto. Thanks

CharlieB · 03-03-2011, 11:20 PM

Won't work. Mag. horn is AC 6 to 28 volts.

redmodelt · 03-04-2011, 11:13 AM

No you can not operate an AC horn on DC. DC power would only attract the diaphragm to the magnet coil like a magnet. AC has a wave form that's on off to pull then releases the diaphragm making the horn work. An AC toy train transformer would work.

FRANK PKNY · 03-04-2011, 11:31 AM

Yes I have tested it on 12V ac train transformer and the horn works well. It don't work well on the magneto however. I checked the mag output and it is pushing 20+ AC volts. I will try to adjust the diaphrame. It's just a guess how to set it I guess trial and error. The horn is very clean inside and the coils check out fine for contuienty.

redmodelt · 03-04-2011, 09:21 PM

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I don't think they ever did work REAL well in the first place.

03-03-2011, 02:04 PM	#1
FRANK PKNY Senior Member Join Date: May 2010 Location: POUGHKEEPSIE NY 12601 Posts: 1,016	Magneto horn question? Can you run a magneto horn on 12V dc power. I realize that they are meant to run on 10 to 28 V ac from the magneto. Thanks __________________ [email protected]

03-03-2011, 11:20 PM	#2
CharlieB Senior Member Join Date: Sep 2010 Location: Toms River N.J. Posts: 515	Re: Magneto horn question? Won't work. Mag. horn is AC 6 to 28 volts.

03-04-2011, 11:13 AM	#3
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,342	Re: Magneto horn question? No you can not operate an AC horn on DC. DC power would only attract the diaphragm to the magnet coil like a magnet. AC has a wave form that's on off to pull then releases the diaphragm making the horn work. An AC toy train transformer would work.

03-04-2011, 11:31 AM	#4
FRANK PKNY Senior Member Join Date: May 2010 Location: POUGHKEEPSIE NY 12601 Posts: 1,016	Re: Magneto horn question? Yes I have tested it on 12V ac train transformer and the horn works well. It don't work well on the magneto however. I checked the mag output and it is pushing 20+ AC volts. I will try to adjust the diaphrame. It's just a guess how to set it I guess trial and error. The horn is very clean inside and the coils check out fine for contuienty. __________________ [email protected]

03-04-2011, 09:21 PM	#5
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,342	Re: Magneto horn question? Sponsored Links (Register now to hide all advertisements) I don't think they ever did work REAL well in the first place.