Re: What can happen if a Wall Adapter Fails?
From: Lord Garth (LGarth_at_Tantalus.net)
Date: 02/16/05
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Date: Wed, 16 Feb 2005 21:04:49 GMT
"royalmp2001" <royalmp2001@hotpop.com> wrote in message
news:1108567564.629415.104940@z14g2000cwz.googlegroups.com...
> For safety reasons, I need to know what are the REALISTIC chances of
> 120V appearing at the output of a failed basic 12V wall adapter.
>
> I would have thought most likely the secondary or primary winding would
> most likely go open-circuit, or the smoothing electrolytic cap or
> bridge rectifier go open or short circuit....so I'm hoping that at
> worst you get 0V at the output.
>
> Can someone tell me the chances of a dangerous situation occuring.
> What safeguard could I incorporate? Would a GFCI protector do the job?
> Could I build a discreet GFCI into my circuit? Any ideas?
>
> I intend to produce a commercial project powered with a wall adapter
> that connects upto the human body.
>
> Thanks
>
Years ago, the phone company supplied some AC output wall warts to run
the dial lights in certain models of their phones. A recall occured because
these molded wall warts were, in some cases, overheating and becoming
potential fire starters.
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