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Odd Information Request, Headphones and Relays

 
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DoktorD
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PostPosted: Wed Nov 21, 2007 3:08 am    Post subject: Odd Information Request, Headphones and Relays Reply with quote

Hi guys,

I have a question that I can't really get an answer to anywhere else. I'm making a science project and I'm trying to see if I can't use my mp3 player to operate a relay switch.

Now from what i've read, headphones use AC current to create sound. I took my multimeter and tested the wires from a cut headphone playing a constant tone and got a reading of around 2.450 on the 4m setting. (Not sure the units, would that be 2.450 milliamperes?)

What I want to know is what kind of relay could I use with that kind of power? I want the relay to operate a 12V model motor.

What kind of relay could I use? Would a relay be able to be tripped by that amperage?
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hotwaterwizard



Joined: 26 Nov 2004
Posts: 72

PostPosted: Thu Nov 22, 2007 4:40 am    Post subject: Reply with quote

All you need is a Vox circuit.
Email me for a circuit.
[email protected]
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John DeRosa
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hotwaterwizard



Joined: 26 Nov 2004
Posts: 72

PostPosted: Thu Nov 22, 2007 4:46 am    Post subject: Reply with quote


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