Re: Electronic dimmer as Variac
From: Watson A.Name - \ (NOSPAM_at_dslextreme.com)
Date: 07/06/04
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Date: Mon, 5 Jul 2004 19:25:07 -0700
"DaveC" <me@privacy.net> wrote in message
news:0001HW.BD0EC25600339262F02845B0@news.individual.net...
> I want to turn up a switching power supply slowly after repairing it,
so as
> to see if anything else is damaged. I have no Variac, and I could use
the
> series light bulb trick, but I already have a light dimmer I'm using
as a
> variable-temperature control for my soldering iron that could do
double-duty
> in this application.
>
> I know that the SMPS, when running correctly, will be a load pulse at
75 kHx.
> Has anyone tried using a dimmer as an "electronic variac"? Is it
feasible?
Read the instructions that came with the dimmer. It probably says that
you're only supposed to use it with a resistive load such as a light
bulb. It'll probably burnout if used on a PS.
> Thanks,
> --
> DaveC
> me@privacy.net
> This is an invalid return address
> Please reply in the news group
>
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