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Subject: Re: [Homebrew_PCBs] Re: Stefan - I got an old laser printer to hack the fuser from!

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2005-12-02

On Fri, 02 Dec 2005 19:40:20 +0100, lcdpublishing
<lcdpublishing@...> wrote:

>
>
> BTW, is this isolator needed for the same reason I needed one on my
>
> spindle driver that fried my computer last year?


Yea, more or less. it isolated the thermisotor and pot and supply from
mains, which isn't all designed to be at that potential, 'specially the
thermistor. Often it will be a phototriac which does the firing of the
triac the right way without hassle at a zero crossing.

ST