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January 16, 2009 05:27 PM

In electronics devices what does the mA stand for? (Example 4.5V 800mA)

Would it be allright to use a 4.5V 1600mA AC adpter where a 4.5V 800mA is recommended
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January 16, 2009 06:02 PM
The mA stands for milliamperes. A milliampere is a unit of current equal to one thousandth (10-3) of an ampere. So, 1600 mA equals 1.6 amps.

You can use a device which is able to supply a larger amount of mA when asked, as long as the voltage is the same.
Source(s):
http://www.thefreedictionary.com/milliampere



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January 16, 2009 05:35 PM
Yes you can usually get away with using a larger AC adapter in this case 1600mA is how much amperage this device will allow to be pulled from it before bad things might happen.  You should not use ones that where the voltages are not matched.  This is because not all devices have a voltage regulation circuit built into them.  So supplying too much voltage will cause the circuits to smoke. 

In the case of the amperage IE mA this is the max that device will supply.  It will supply a smaller amount no problem.

Hope this helps
Source(s):
I have a BSEE and BSCPE.


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January 16, 2009 06:35 PM
mA stands for milliamps.  How many milliamps in 1 amps?
The answer is 1000.

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