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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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2nd Jul 2020, 6:56 pm | #1 |
Heptode
Join Date: Apr 2011
Location: Edinburgh, UK.
Posts: 805
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Convertor ringing 2A
The square grey plastic box, item 375507, used to provide external bells on Norstar and some other systems.
I used to have, or could find online, information about the terminals, but I've lost it. Can anyone help? Inputs PL1 AC IN DC AUX DC + DC - AC COM (there are 4 connections for 5 designations - are DC- and AC COM the same?) Output PL2 HIGH N/C LOW Link to photo of the outside: http://www.telephonesuk.co.uk/images...gen_2a_out.jpg |
2nd Jul 2020, 7:58 pm | #2 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Convertor ringing 2A
From an earlier thread: https://www.vintage-radio.net/forum/...14&postcount=7
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2nd Jul 2020, 8:44 pm | #3 |
Heptode
Join Date: Apr 2011
Location: Edinburgh, UK.
Posts: 805
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Re: Convertor ringing 2A
"Ringing Generator" - that's why I couldn't find it. I did search, honestly! Slightly embarrassed
Thank you. |
2nd Jul 2020, 9:10 pm | #4 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Convertor ringing 2A
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3rd Jul 2020, 7:44 pm | #5 |
Nonode
Join Date: Oct 2014
Location: West Midlands, UK.
Posts: 2,181
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Re: Convertor ringing 2A
I've got one sitting on the bench- all the info is on the rear on a label. Ringing generator 2A
Item code 375507 , With a another number "GRS/90340004685" . I used to remove them from old BT systems I replaced with Panasonics and kept them as often I'd be asked to fit an extension bell to something like a Norstar. Can't help on the battey supply as I had an old mate who used to help me out with wiring & programing. In return I could help him out with problems on Panasonic programming. I also used to take out (smaller BT systems) a NTE sized socket with an invertor on the rear which runs on a 47v supply. It is polarity sensitive. ( Mentioned this one on here before , but nobody seemed to have seen one ,or knew the number/ N DIAGRAM ). For info was in April this year . Last edited by Oldcodger; 3rd Jul 2020 at 7:51 pm. Reason: add photo |