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| General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
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5th Jan 2020, 10:36 am
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#1 |
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Diode
Join Date: Jan 2020
Location: Surrey, British Columbia, Canada.
Posts: 8
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Please, help identifying this unusual device! (polarised telegraph relay)
Good morning.
In my collection, I have an unusual device that was made in England. Not sure what this is. If anybody has an idea, I would love to know. Is this a transformer, a motor, or something else? Sending some photos. |
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5th Jan 2020, 11:20 am
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#2 |
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Octode
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
Posts: 1,506
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
An interesting one! It does bear a similarity to a magnetic detector for sea mines. Does the contact move across in the presence of a magnetic field? I am intrigued to find out what S & M might refer to.
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5th Jan 2020, 11:28 am
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#3 |
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Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,286
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
I think it's some kind of polarised telegraph relay. M and S indicating Mark and Space.
__________________
Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
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5th Jan 2020, 11:30 am
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#4 | |
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Diode
Join Date: Jan 2020
Location: Surrey, British Columbia, Canada.
Posts: 8
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
Quote:
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5th Jan 2020, 11:32 am
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#5 | |
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Octode
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
Posts: 1,506
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
Quote:
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5th Jan 2020, 11:45 am
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#6 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
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5th Jan 2020, 1:54 pm
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#7 |
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Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,995
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
Yes, I too reckon it's a bipolar relay - probably dating from pre-WWII
(I never came across one as old as that, I was much more familar with the later plug-in type in a rectangular greenish-grey aluminium case) |
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6th Jan 2020, 12:00 am
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#8 |
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Octode
Join Date: Feb 2009
Location: Bletchley, Buckinghamshire, UK.
Posts: 1,215
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
Yes, it is a polarised telegraph relay (often known as a Carpenter Relay) and, as already mentioned, probably made by Creed.
Some of them have Air Ministry markings and date from the WW2 era. |
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6th Jan 2020, 12:18 am
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#9 |
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Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,553
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
I have got a 1960s one that is much smaller.
About 40 years ago I opened it up to look inside. It has a moving coil like a meter and when I tested it I was able to get it to switch with an LDR and no amplification. It is in storage in a box at the bottom of a big stack. |
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6th Jan 2020, 7:14 am
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#10 |
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Diode
Join Date: Jan 2020
Location: Surrey, British Columbia, Canada.
Posts: 8
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
Super! Thank you very much to everybody for such an amazing job!!!!!
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17th Jan 2020, 1:37 am
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#11 |
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Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,553
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Re: Please, help identifying this unusual British electrical device! Transformer? Mot
I spotted the one I said about in post#9 and have started a new thread for it so that this thread can stay on topic.
https://www.vintage-radio.net/forum/...71#post1208571 |
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