[DML] Re: Ohm's Law (Cigar lighter output)
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[DML] Re: Ohm's Law (Cigar lighter output)

I am not quite sure what your problem is. The cigar lighter circuit
will supply 15 amps @ 12 volts continuously. Fuse # 17 is a 20 amp
fuse and supplies the cigar lighter and the clock (in the 81's). You
have to be careful with the recepticle because it is very "short"
meaning that many plugs do not fit correctly into it. I tried a
maplight and it kept falling out. In many cars they now provide
multiple 12 volt recepticles for the lighter, cell phone, radar
detector, CD player etc. Maybe you should just add a couple of
recepticles under the dash or in the side of the console. If the fuse
in the particular device you are plugging in blows the fault in in the
device, not the circuit powering it. Check the polarity. The pump
won't care but the electronic devices will. Maybe the lighter is wired
up wrong. The center contact is supposed to be + .
David Teitelbaum
vin 10757

--- In dmcnews@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> I am so embarrased to even be asking this question as a guy who is 
> deeply into telecom and EE but:
> How many amps is the cigar lighter -supposed- to put out?? Mine puts 
> out around 4 amps. It runs my little air-pump just fine, but of 
> course it blows the fuses in my cigar-lighter adapter devices such as 
> cell-phone chargers, and mini-disc player power supply. They are only 
> rated for 1000 mA.
> Do I have a short somewhere, or does it just need attenuated?
> If I do need to attenuate the circuit, how many ohm resistor should I 
> install? Based on 13.5 volts and 4.5 amps DC measured at the outlet, 
> I figured I should put in a 50 ohm resistor.
> Now that I've publicly admitted I'm dumb feel free to advise me.
> Rich A.
> #5335

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