Do you have a question? Post it now! No Registration Necessary
Subject
- Posted on
Keeping an old dog warm...
- 06-18-2005
June 18, 2005, 3:22 am

Ok all, I'd like to pick your brains for a bit as mine is letting me down at
the moment.
I'd like to keep a hot water bottle or steel plate warm, to allow my dog to
not freeze his knackers off at night.
I've pondered Peltier devices, nichrome resistance wire and electric
blankets.
What would be the best way to keep the bed temperature warm, but not hot?
Say around 40 degrees...
Would nichrome wire be suitable to insert into a hot water bottle to keep it
warm?
A Peltier device hooked up to a smallish steel plate under the bed, much
like a waterbed heater, with a heatsink on the 'cold' side to allow it to
draw sufficient heat from the subzero air/ground?
All help appreciated!
--mark

Re: Keeping an old dog warm...

**MY mum had an old heated slipped thingy. She was throwing it out, because
the fluffy material had deteriorated. My dog didn't care in the slightest
about the crappy looking material. He slept on it for many years. You could
buy a new heated slipper. I imagine they're made in China nowadays and
probably sell for $19.95.
--
Trevor Wilson
www.rageaudio.com.au
Trevor Wilson
www.rageaudio.com.au

Re: Keeping an old dog warm...

**Oh, you're one of those? People whose amps have to be cleaned of pet hair,
before service. People whose amps go belly-up prematurely, from capacitor
failure, because they're under the delusion that keeping an amp switched on
24/7 is a good idea.
--
Trevor Wilson
www.rageaudio.com.au
Trevor Wilson
www.rageaudio.com.au

Re: Keeping an old dog warm...

You are probably better off getting a proper heating pad from a pet
supplies for this purpose. probaby a lot safer
for example.
http://www.lovemypet.com.au/mall/more-redflex-heating-pads.asp
With the wattages quoted there (up to 120W !!) I would be very
reluctant to try generating this level of heat in bedding (which is
usually flammable material)
Other things have to be taken into consideration such as what happens
if the dog pees the bed, chews wiring,bedding etc
-----
If you do buy a 240v pad like shown, I would also consider buying an
isolation transformer to go with it

Re: Keeping an old dog warm...

I have an idea pet shops these days sell pet electric blankets for
less than any mucking around you might do.
See:
http://www.ozpetshop.com.au/product_info.php/products_id/532?osCsid37%e0b1281c8eb6b85ec6c5cb43e9cf3a
I have had a pet electric blanket for many years, which I originally
bought in the U.K.
Ross
(To get email address ROT 13)
ebff snipped-for-privacy@lnubb.pbz

Re: Keeping an old dog warm...
...

at
to
it
I think it was Oatley Electronics that was selling heating tape (silicon
rubber with nichrome?) for doing this sort of thing about 12 months ago.
They may still have some lying around.
An alternative may be an old waterbed heater pad - maybe 2' x 3'. I think
they need to be "heatsunk" to prevent hot spots.
rob

Re: Keeping an old dog warm...

down
hot?

keep
to
http://www.oatleyelectronics.com/items.html
CSW1 (NEW) CAR SEAT WARMER: Provides warmth and comfort when driving
in autumn and winter. Fits all seats. Connects to the car cigarette lighter
socket (adaptor provided). Features include built-in thermostat, low power
consumption, easy to fix, non-slip and uses elastic strap retainer. $20

Re: Keeping an old dog warm...

Our dogs, when they lived outside, had a 25W bulb inside a Milo can wrapped
in wool tucked inside their box (can was earthed of course). The main thing
was the box - sittng on a thick piece of foam and well insulated. Worked
well for small dogs, bigger dogs would need a bigger box I guess.

Re: Keeping an old dog warm...

My sister used to keep pet rats in a set of old kitchen cupboards outside
the house. To stop them from freezing, I took a concrete house brick and
using a Hilti I drilled a hole about 3cm diameter and 10cm deep into the
brick (but not right through to the other side), and I soldered wires onto
a truck indicator bulb 21Watts, 24 Volts. I put the bulb in the brick, and
filled the hole with cement mortar (be careful to stop it getting on the
metal parts of the wires etc. since cement can corrode copper, I forget how
I achieved this). The cable was sticking out through the mortar. I put
the brick in the cupboard (cage) with side with the wire directly against
the wall of the cage so that the rats couldn't eat the cable. I connected
the 24V bulb to a 12V halogen downlight transformer so it would put out
less than the rated power but enough to keep the brick warm, and so it
would last for a long time.
The basic idea is that whatever goes wrong with the bulb, the brick can't
catch fire because bricks don't burn, and the halogen transformer is
supposed to be short circuit - proof too.
To keep the power usage down, a timer or thermostat located where it is safe
from the dog and the weather might be a good idea, and more environmentally
friendly.
Chris
Site Timeline
- » 500v electros
- — Next thread in » Electronics Down Under
-
- » Looking for a company called ROYEL
- — Previous thread in » Electronics Down Under
-
- » Aussies Love EVs ?
- — Newest thread in » Electronics Down Under
-
- » cheap solder smoke filter or overkill?
- — The site's Newest Thread. Posted in » Electronics Repair
-