Group: alt.engineering.electrical
From: ROYKEY@webtv.net (Roy)
Date: Thursday, November 15, 2007 11:42 PM
Subject: Re: Can a dc motor spin faster, or use fewer amps, if cooled ?

Date: Thu, Nov 15, 2007, 5:51pm (EST+13)
From: 4ws@gmail.com (TE=A0Chea)
I notice electrical & electronic devices ( if hot ) all work better if
cooled.
Thanks for any advice.
-------------------------------
As mentioned most electronic & DC equipment even some electrical devices
are manufactured within a "Tolerance" to heat, voltage & current
limitations - when the specifications are rated, burned & labeled into
the products the nature of solid state, DC & some AC devices is that
they work best within specs, but., in fact, dependent on the product &
it's components, the tolerance & operating range is really 5%,10% or
upto 20% over & under the specs.

Cooling helps if it maintains the motor/devce within tolerance -
anything over & simple things such as grease coagulating may hamper &
deter optimum performance.

A Rule of Thumb is to bare in mind that electrons move easier in a
warmer environment., colder temperatures slows them down.

I was amazed when I first saw the DC magnetic motors on turntables,
record playing would never be the same }:)

Roy Q.T.
Urban Technician
[I don't make em, I just fix em]