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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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12th Dec 2006, 10:11 pm | #21 |
Dekatron
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,518
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Re: Info on Mechanical exchanges
Doh! - I knew I had a set somewhere! - No need to worry Sam, I will get another set....
Mutter, mutter, grumble, grumble off to a dark room........
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Engineers make things work and have spare bits when finished |
24th Jan 2007, 5:55 pm | #22 |
Hexode
Join Date: Jan 2003
Location: Darlington (DL3) North East U.K.
Posts: 394
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Re: Info on Mechanical exchanges
Posts on users stories re Mechanical exchanges moved to:
https://www.vintage-radio.net/forum/...ad.php?t=14324
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Chris C G8TJR |
14th Jan 2008, 3:37 am | #23 |
Retired Dormant Member
Join Date: Jan 2008
Location: Ringwood
Posts: 5
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Re: Info on Mechanical exchanges
Sean, I used to maintain pre 2000 and 2000 type 2 motion selectors when electricity used to come in pounds, shillings and pence (spelled with a "d").
I can remember some stuff, like what the relays used to do, A, B, CD, HA, HB, etc. And why the CD relay was slugged. And why the A relay had an Istmas Armature. I used to maintain standard uni-selectors too, but they are baby stuff. For two motion selectors you will need 50 volts and loads of it. And watch out for the back emf the coils give out on disconnect. I might remember some stuff you may need. I studied Atkins in 1969. OldGuyGPO. |