why do dimmers break down
From: Asimov (Asimov_at_-removethis-bbs.juxtaposition.dynip.com)
Date: 08/20/04
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Date: Thursday, 19 Aug 2004 21:48:08 -500
"b" bravely wrote to "All" (19 Aug 04 03:38:32)
--- on the heady topic of "why do dimmers break down"
b> From: bruin70@mail.com (b)
b> couple of questions........
b> why do dimmers stop working after a while? not all, of course, but
b> they're kinda like 3-way bulbs that stop working. i have two now,,,one
b> is a built in wall dimmer for my sconces, and the other is one of
b> those cheap ones you buy at a hardware store with a round "wheel" that
b> i attached to a normal cord.
b> what part of the dimmer stops working? and is it cheaper to just buy a
b> new one or can either type be fixed quickly?
They get damaged for a number of reasons. They can be damaged over time
because of powerline glitches. Another source of damage can happen when
a lamp burns out. Sometimes the lamp will short out temporarily when the
filament burns out. This can briefly draw a heavy current through the
dimmer. Also the strong induction which results can raise the voltage a
lot across the dimmer when the lamp filament finally opens.
A+s+i+m+o+v
... High Voltage Electronics: Life's a glitch, then you fry.
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