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Car Alarms Q (Read 522 times)

Mar 19^th, 2008 at 3:16pm

VVM Offline
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hey guys

quick question, does anyone know the power requirements of a typical car alarm?

cheers Cool

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Reply #1 - Mar 19^th, 2008 at 5:14pm

expat Offline
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Bearing in mind that a car has a 12 volt battery under the bonnet, I think it is safe to assume......

Matt

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B1 Boeing 737-800 and Dash8 Q-400

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Reply #2 - Mar 30^th, 2008 at 4:59pm

RichieB16 Offline
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January 27, 1967
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I don't know what the requirements are...but it wouldn't be much because the alarm wouldn't be pulling hardly any current unless it was going off. When the car is locked and the alarm active, its going to be in an idle sleep mode. So, the current draw should be next to nothing.

&&Check Out My 1969 & 1996 Camaro's&&

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Reply #3 - Apr 3^rd, 2008 at 11:41pm

elite marksman Offline
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Car alarms can't draw all that much power, if they did, they wouldn't make them. However, that said, your car battery can store A LOT of power. The average car battery holds about 100 Amp-Hours (AH), or 10000 mAH. The current needed to power most electronics ranges from 10-100 mA, anything over 150-200 mA would simply create too much heat, especially if there is no active cooling, and would melt the pcb. So it will take a long time for even the most demanding electronics to kill a car battery.

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Reply #4 - Apr 6^th, 2008 at 11:26am