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- Path: sparky!uunet!mcsun!uknet!yorkohm!minster!paulh
- From: paulh@minster.york.ac.uk
- Newsgroups: sci.electronics
- Subject: Re: Amperage meaning?
- Message-ID: <714820448.20063@minster.york.ac.uk>
- Date: 26 Aug 92 09:14:09 GMT
- References: <1992Aug25.205031.20397@athena.cs.uga.edu>
- Organization: Department of Computer Science, University of York, England
- Lines: 31
- X-Newsreader: Tin 1.1 PL5
-
- Michael A. Covington (mcovingt@athena.cs.uga.edu) wrote:
- : Voltage is the pressure that drives a current (amperage) through a load.
- :
- : The way a power supply works is this:
- :
- : the rated _voltage_ is the actual value you'll get;
- : the rated _amperage_ is the maximum permissible.
- :
- : The load determines how many amps will actually flow.
- : So the relevant question here is whether your load consumes more
- : than 2.5 amps. If not, you'll have no problem.
- : --
- : + Michael Covington - Artificial Intelligence Programs - U of Georgia - USA
- : + Unless otherwise noted, these are private opinions, not official statements.
- : + VOTE NO GEORGIA LOTTERY - don't tie education to an unpredictable income.
-
- The assumption here is that the power supply provides a constant voltage.
- There are power supplies that provide a constant current. In constant
- current supplies the output current remains constant but the pd varies upto
- some maximum.
-
- The limiting constant for both types of supplies is power, W = I.V
-
- Check the labels and be careful out there kids !!!
-
- H
-
- Paul Hatcher PHONE +44 904 432771
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