12VAC - 2Amp Power supply

G

Geoff Beale

Guest
Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?

Google searches only indicate sources with 1amp output max.

Needed for a Churchill make electric massage chair. Churchill refuse
to assist with spares. The chair is fitted with massage units made by
Raffel Product Development Co Inc in USA and the low voltage supply line
carries a label stating "Use transformer #57-12-2000D only". This
unit is believed to be made by a US company called CET, but is only
available in in USA configuration.

Many thanks,
--
Geoff Beale
Remove digit to email
 
"Geoff Beale" <geoff.beale@big1foot.com> wrote in message
news:vvdpvuop8kmi92@corp.supernews.com...
Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?

Google searches only indicate sources with 1amp output max.

Needed for a Churchill make electric massage chair. Churchill refuse
to assist with spares. The chair is fitted with massage units made by
Raffel Product Development Co Inc in USA and the low voltage supply line
carries a label stating "Use transformer #57-12-2000D only". This
unit is believed to be made by a US company called CET, but is only
available in in USA configuration.

Many thanks,
If this is AC, then all that is needed is a transformer, not a 'power
Click to expand...
supply' as such. This will be reasonably bulky (since the transformer size
will be fixed by the need to deliver 24W minimum, and the transformer will
be operating at 50Hz). In general there has been a move 'away' from plug in
supplies using this type of design, since switch mode AC/DC converters allow
higher powers to be packed into smaller spaces. Plain (unboxed) transformers
that are probably suitable, will be available from any electronics supplier
(Maplin, Quasar, RS etc.). You might also be able to use one of the 'low
voltage lighting' supply transformers, since the ones for halogen lamps, are
normally 12v AC out.
However there is a big 'caveat', that any transformer will produce more than
it's rated voltage when operating under a light load, with the change being
larger for small transformers. Without a proper specification, you have no
way of knowing if a unit that produces (say) 17V unloaded, will be OK.
Generally higher power units will droop less than small units in this
regard, and in the case of lighting transformers, the coils are designed to
keep this to a minimum. The Block HLV50, which is available from most
electrical wholesalers, is rated to give 12.4v no load, and 11.5v at 4A, and
with the addition of a 2A fuse for safety, might well be a good bet. The
same company, also do a range of 'safety isolating transformers', with the
SIM60, giving two 12v (nominal) outputs, each rated at 2.5A (12.9%
regulation).
240V to 110v step down adapters are readily available, and cheap, so using
the proper US transformer, combined with one of these, might well be the
safer bet.

Best Wishes
 
On Sat, 03 Jan 2004 18:57:48 +0100, Dieter Wiedmann
<Dieter.Wiedmann@t-online.de> wrote:

Geoff Beale schrieb:

Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?

Take one of these halogen bulb transformers with at least 25W.


Regards,
Dieter
Click to expand...
Why not just buy a fairly basic battery charger at Halfords or
someplace?

Remove the rectifier and you have around 14V. If Volts is critical,
remove a turn or two from the secondary.

HN
 
Geoff Beale schrieb:
Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?
Click to expand...
Take one of these halogen bulb transformers with at least 25W.


Regards,
Dieter
 
Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?

Google searches only indicate sources with 1amp output max.

Needed for a Churchill make electric massage chair. Churchill refuse
to assist with spares. The chair is fitted with massage units made by
Raffel Product Development Co Inc in USA and the low voltage supply line
carries a label stating "Use transformer #57-12-2000D only". This
unit is believed to be made by a US company called CET, but is only
available in in USA configuration.

Many thanks,
--
Geoff Beale
Click to expand...
Take a look at
http://www.maplin.co.uk
in the search box type WB25C should be just the tranny you
need.

sQuick..
 
Many thanks to all for the input.

--
Geoff Beale
Remove digit to email
"sQuick" <squickdrill@hotmail.com> wrote in message
news:1073160091.26780.0@damia.uk.clara.net...
Can anyone assist, please, with British source of UK240V -
12vA/C-A/C
power supply with 2amp output?

Google searches only indicate sources with 1amp output max.

Needed for a Churchill make electric massage chair. Churchill
refuse
to assist with spares. The chair is fitted with massage units
made by
Raffel Product Development Co Inc in USA and the low voltage supply
line
carries a label stating "Use transformer #57-12-2000D only".
This
unit is believed to be made by a US company called CET, but is only
available in in USA configuration.

Many thanks,
--
Geoff Beale

Take a look at
http://www.maplin.co.uk
in the search box type WB25C should be just the tranny you
need.

sQuick..
Click to expand...
 
Try Rs Components


"Geoff Beale" <geoff.beale@big1foot.com> wrote in message
news:vvdpvuop8kmi92@corp.supernews.com...
Can anyone assist, please, with British source of UK240V - 12vA/C-A/C
power supply with 2amp output?

Google searches only indicate sources with 1amp output max.

Needed for a Churchill make electric massage chair. Churchill refuse
to assist with spares. The chair is fitted with massage units made by
Raffel Product Development Co Inc in USA and the low voltage supply line
carries a label stating "Use transformer #57-12-2000D only". This
unit is believed to be made by a US company called CET, but is only
available in in USA configuration.

Many thanks,
--
Geoff Beale
Remove digit to email
Click to expand...
 
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