RE: DDAR in Bathroom.

[Keith Doxey <ukha@xxxxxxx>]

How about some 25W Power Resistors (the alumininium clad ones) riveted to a
sheet of Aluminium. Place the aluminium on the rear of the mirror and drive
from a high current low voltage source. Plate will get warm and heat the
mirror. Safe, low voltage, cheap.

You cant use a single point of heat or the mirror may crack hence the use
of
multiple resistors distributed around the plate which then dissipates the
heat more evenly.

Keith

-----Original Message-----
From: Paul Gordon [mailto:paul_gordon@xxxxxxx]
Sent: 29 August 2001 11:51
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] DDAR in Bathroom.


Aren't there any low voltage options for heating behind bathroom mirrors? -
Can't be that difficult surely?

- I remember having one of those car lock de-icer thingies that ran off a
single AA battery and would get too hot to touch within about 10 seconds
when operated...

How much heat can it need to demist a bathroom mirror? - aren't there any
car window demister kits available as add-ons that could be stuck to the
rear surface of the glass?

£0.02

Paul G.





>From: "Phil Harris" <phillip.harris1@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] DDAR in Bathroom.
>Date: Wed, 29 Aug 2001 11:35:33 +0100
>
>
>Smarthome.com sell these heating pads for behind mirrors and I was
tempted
>to get one but wasn't sure about a safe source for a permanent 110V
supply
>... are the 240v - 110v ac transformers safe enough to be chucked away
in a
>loft where they can't be seen anymore?
>
>Phil
>
> > -----Original Message-----
> > From: Ian Oliver [mailto:ioliver.lists@xxxxxxx]
> > Sent: 29 August 2001 09:25
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] DDAR in Bathroom.
> >
> >
> > In article <9mh5ek+l72g@xxxxxxx>,  wrote:
> > > Bathroom mirrors do...... :o)
> >
> > Not if you have a heating element behind them. I stayed in a very
> > expensive hotel in Tokyo and they had an heater behind that
cleared a
> > patch in the shape of the hotel.  Sadly for a Westerner the patch
was
> > too low and I couldn't see my head!
> >
> > Regards
> >
> > Ian Oliver
> > Sunny Leeds, UK
> > Using Java on Tini for control via Dallas 1-wire
> >
> >
> >
> >
> > For more information: http://www.automatedhome.co.uk
> > Post message: ukha_d@xxxxxxx
> > Subscribe:  ukha_d-subscribe@xxxxxxx
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> > List owner:  ukha_d-owner@xxxxxxx
> >
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> >
> >
> >
>


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