Purpose of the relay (6 Volt)

messagenews: snipped-for-privacy@4ax.com...

coil will work fine off the 6 volt AC magneto.

in a magneto powered 6 Volt AC system. Sorry for the trouble.

JoJo

messagenews: snipped-for-privacy@4ax.com...

coil will work fine off the 6 volt AC magneto.

--- Boy, you're just about the dumbest piece of s*it walking the planet.

The point wasn't that a DC relay won't work on AC, the point was that the OP was looking for information, not smartass remarks designed to make you look oh-so-superior. Had you really been interested in helping you could have mentioned that rectifying the output of the "magneto" would have done the trick and the DC relay could have been used that way. As it is, you left the OP with the sense that the only thing that would work in there was a relay with an AC coil, which isn't true.

---

--- Please do...

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--- Wrong, asshole. Look below.

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in a magneto powered 6 Volt AC system. Sorry for the trouble.

--- So are you now going to explain how to use the DC relay to JoJo or will someone else have to while you go off and sulk?

-- JF

No trouble. Yes, it's unlikely to work. The relay will probably chatter. Most relays with a 6 VAC coil really aren't very suitable to use for this.

Can you use a heavier button and avoid the relay?

The relay doesn't really help the horn, it lets you use a smaller horn button than you might otherwise.

ANd why does it chatter? Because the relay coil is being fed with alternating current, causing the magnetic output of the relay coil to fluctuate, and hence the pull of that relay coil is varying, causing the contacts of that relay to open and close.

And, the obvious solution is a small diode and capacitor, so the relay sees DC.

This isn't rocket science, this sort of scheme has been around for decades. At the very least, there were all kinds of people with surplus DC relays that they wanted to use on AC.

I'm with John, sometimes if a brief answer is all that's supplied, one might as well not post anything.

To use another example, it's not as if people haven't heard of Ebay, hence there is really nothing of value to simply reply "Ebay!" when someone is looking for something. Give them a decent answer, or at the very least say something to make their "Ebay experience" better.

Michael

Blah, blah, blah. And no value in any of it.

Why add a relay when it isn't needed? The OP is asking reasonable questions and needs to know why, not how. The answer, as I explained, is that it is unlikely that a relay is needed or will help. Any horn which will run off a magneto isn't going to need much current, so the horn button alone should work fine. He doesn't need to build a pointlessly expensive 'solution' that isn't solving anything.

I don't know where you are located, but the word 'magneto' where I come from (The UK) means a permanent magnet generator with a contact breaker inside which only supplies the voltage for the spark. If the current for the lighting, horn etc is also supplied it is a combined unit often called a 'magdyno' and that output is likely to be DC. I had a 1957 Vespa scooter like this and also a 125 cc BSA Bantam (very like a Harley Hummer - they were both postwar copies of the same prewar German model). You only had lights and horn when the engine was going (no battery). Perhaps if you supplied the make and model information? The horns as supplied were very feeble anyway and many people bought bulb horns or ones with replacable air bottles (Fiamm made good ones)

My bad. It will be AC

Yes. I think the OP thought a relay would 'boost' the current - it won't. Just a button is all he will need.

FOF