Re: OT another electric / electronics question

Posted by souNdguy on October 26, 2006 at 06:04:40 from (12.64.234.8):

In Reply to: OT another electric / electronics question posted by PhilcaseinWPa on October 26, 2006 at 05:39:10:

Think of the voltage as pressure ( potential or electromotive force ).. the current would be akin to the throughput or gpm,.. etc.

Power (watts ) is a function of the votlage and the current. You can generate similar power using a higher supply voltage, and a lower operating current, and smaller wire, as compaired to using lower supply voltage, higher current, and heavier wire.

Take for example tractor electrical systems.

6v battery, 35w lamp, 5.83 amps

12v battery, 55w lamp, 4.58 amps

or stated in a comparison way

12v battery, 35w lamp, 2,91 amps

thus you could generate the same 35w worth of incandescent light using less than 3 amps on 12v, as you could using nearly 6 amps at 6v. thus menaing you could use a smaller wire diameter to run the 12v accessories. in factr.. that was a prime reason to move to 12v... it saves on copper..

Soundguy

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