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From: (no name) (no email)
Date: Sun Aug 22 1999 - 19:40:47 EDT
Randy,
I am at a loss to understand your experience. If the values you cite for your
reefer are correct, it may have a microprocessor which controls the current
to the motor so that the machine operates consistently over the typical range
of voltage which cruisers experience.
The fact remains that if you reduce voltage to a lamp, it will dim. A good
example is the dimming of headlights when the starter is engaged and pulls
the battery voltage down.The light output is reduced by virtue of less energy
(watts) consumed. You'll recall that a load doesn't really "draw" current;
it's the EMF that forces the electrons to flow through the load. If you
reduce the EMF, the current will decrease.
I spent years aboard ships which had 120/240VDC systems, and if we increased
the generator voltage, the current increased, the motors speeded up and the
lights got brighter; with decreased voltage, the ammeters declined, the
motors slowed and the lights dimmed. I don't see how anyone can argue with
that.
Kind regards,
John
"Truelove"
In a message dated 8/20/1999 5:46:07 PM Eastern Daylight Time,
writes:
> This is visible to me as my batteries discharge and the fridge, say, is
running. With a full charge showing something in
> the neighbourhood of 13V, it draws 9.2A. When my voltage has dropped to 12
volts (at around 50-60% discharged), its
> drawing over 10.
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