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#427849 - 29th Aug 2010 9:58am Telex Power supplies
davew3 Offline
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Registered: 16th Jun 2009
Posts: 1024
Loc: Wirral
Anybody got any telex power supplies they don't need :),I need 2 or failing that 2 mains transformers 240v ac primary 80v-0-80v ac secondary to make up some,they are needed for the Merchant Navy Radio Museum at Fort Perch Rock,they have 2 Creed 444 /BT model 15 teleprinters they would like to show working,usual surplus places have been checked out.

http://www.fortperchrockmarineradio.co.uk/making%20of%20the%20wireless%20museum.html


Edited by davew3 (29th Aug 2010 10:02am)

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#427853 - 29th Aug 2010 10:59am Re: Telex Power supplies [Re: davew3]
Pinzgauer
Unregistered


I've a spare ex-Met Office transformer. 250v ac primary but 50v ac secondary. Would it do ??

It's quite a chunky item. Used for power supply to anemometer mast in garden. Usual Ministry "bombproof" build !

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#427919 - 29th Aug 2010 9:42pm Re: Telex Power supplies [Re: ]
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 9889
Loc: Birkenhead
Bardwells have some 43-0-43 transformers in, two of these with the outputs in series will give you 86-43-0-43-86, they are dead cheap as well!

The 80 volts for teleprinters is not that critical it is just for the 20ma current loop.

Also our mains has dropped to 230V so these will be pretty close.

CLICKY
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#427935 - 29th Aug 2010 11:19pm Re: Telex Power supplies [Re: diggingdeeper]
davew3 Offline
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Registered: 16th Jun 2009
Posts: 1024
Loc: Wirral
Thanks for your help people,I will pass the info on,spoke to one of the guys on Saturday evening and he has most of the parts but no transformers.

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#428014 - 30th Aug 2010 11:35am Re: Telex Power supplies [Re: davew3]
Pinzgauer
Unregistered


Your welcome Dave. The tran. that dd suggests is maybe a better bet than mine. Whereas you can have mine for free, the postage would be horrendous as being MOD type stuff, it's built like a brick outhouse! Mine is also 30v short of what you want ideally.

Hope your friend finds the right gear eventually. There's something about the old Telex stuff clattering away. The word is "quality" !!

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#428192 - 31st Aug 2010 5:19pm Re: Telex Power supplies [Re: ]
davew3 Offline
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Registered: 16th Jun 2009
Posts: 1024
Loc: Wirral
Sent an email so am waiting to find out,even had a mate who was on holiday in California look,he contacted a scouser friend who works for a major company in Silicon Valley and he spent 2 hrs searching all the transformers in a local surplus shop but same problem not much being made over 25v these days,don't know Pinz if your tranny is is 50v-0-50v then it may be possible to turn the t/printer into single current loop as usually the bias spring is fitted to the magnet frame for that purpose,it is lovely kit not made any more but still used by some companies as the page it prints is a legal document unlike fax.

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