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Chazza
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Connecting 6v siren to 12v battery Sun, 15 August 2004 09:10 Go to next message
I bought a siren for my alarm recently and surprisingly the siren is supposed to be operated on 6 volts!! What the?

When I connect it to 12v battery, it will sound constantly but when connected to 6 volts it behaves normally (it is silent until I connect the blue cable to positive).

Why on Earth did they create a 6v siren for cars and how am I supposed to wire this up to my alarm?
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Cool1
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Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 09:16 Go to previous messageGo to next message
Whats its max current drain?
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Chazza
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Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 09:25 Go to previous messageGo to next message
Don't know...the thing wasn't supplied with any instructions or specs (how stupid). It looks like a good quality siren (Black Widow) just can't figure out why they made it 6v.

What does it matter about current drain anyway?
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Cool1
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Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 09:32 Go to previous messageGo to next message
Chazza wrote on Sun, 15 August 2004 19:25


What does it matter about current drain anyway?

It matters when your trying to regulate the 12v down to 6v.
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Chazza
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Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 09:37 Go to previous messageGo to next message
Hmm. I would assume it would draw around 300ma. (Based on the fact that 12v's use around 150ma)...but that is just a guess.

So you're suggesting the use of voltage regulators, hopefully not resistors?

It is pathetic to buy a car alarm siren and it's not even designed to work on the right voltage!

[Updated on: Sun, 15 August 2004 09:37]

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Cool1
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Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 09:46 Go to previous messageGo to next message
http://www1.jaycar.com.au/productView.asp?ID=ZV150 6&CATID=33&keywords=&SPECIAL=&form =CAT&ProdCodeOnly=&Keyword1=&Keyword2= &pageNumber=&priceMin=&priceMax=&S UBCATID=320
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Chazza
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June 2004
Re: Connecting 6v siren to 12v battery Sun, 15 August 2004 10:50 Go to previous message
Nice find, cheap too. I assume this burns off additional voltage as heat, so it needs a small heatsink too?

Seems kinda unnecessary/pathetic that the siren needs this though... Mad

Cheers for the help.
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