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-   -   Mystery Power Supply Unit. (https://www.vintage-radio.net/forum/showthread.php?t=183914)

gm0ekm cecil 17th Sep 2021 5:09 pm

Mystery Power Supply Unit.
 
4 Attachment(s)
This power supply unit was in my former museum collection. I wonder if anyone has any info. I think the chassis may have been from a former piece of kit.

Keith 17th Sep 2021 6:28 pm

Re: Mystery Power Supply Unit.
 
Looking at the 12 pin connector, could it be a 19 set PSU built into some other military chassis?

Julesomega 17th Sep 2021 10:36 pm

Re: Mystery Power Supply Unit.
 
Oh I know those retaining lugs - but what are they? I can feel the knurled retainer thing tightening on them in a mount...

Jon_G4MDC 18th Sep 2021 10:31 am

Re: Mystery Power Supply Unit.
 
First reaction is it a PCR PSU?

G4XWDJim 18th Sep 2021 10:53 am

Re: Mystery Power Supply Unit.
 
Hi Cecil, measuring the available voltages at the socket would be a good place to start. Keith’s thought that it might be a 19 set mains PSU I would think is reinforced by the low voltage looking metal rectifier.

Jim

M0FYA Andy 18th Sep 2021 10:58 am

Re: Mystery Power Supply Unit.
 
Quote:

Originally Posted by Julesomega (Post 1407555)
Oh I know those retaining lugs - but what are they? I can feel the knurled retainer thing tightening on them in a mount...

Retaining lugs, exactly that. We called them 'hold-downs'. It looks like a standard Air Ministry chassis.

Andy

G6Tanuki 18th Sep 2021 11:29 am

Re: Mystery Power Supply Unit.
 
Doesn't look like a PCR one to me; the PCR has a moulded rubber connector.


In the 50th and 60s there were a few commercially produced WS19 mains supplies, some just to power the receiver, other ones powered both Tx And Rx.

Could you have one of those?? I wonder what voltage it provides?

gm0ekm cecil 19th Sep 2021 12:42 pm

Re: Mystery Power Supply Unit.
 
Quote:

Originally Posted by G4XWDJim (Post 1407631)
Hi Cecil, measuring the available voltages at the socket would be a good place to start. Keith’s thought that it might be a 19 set mains PSU I would think is reinforced by the low voltage looking metal rectifier.

Jim

Hi Jim, I agree it looks as it is a home brew power unit for the W.S. No 19. There is a signal strength meter on the front panel and a 12v. relay on the chassis. I haven't done any checks on it and as my collection has now been all dismantled and gone to other museums I am selling off duplicates plus odds and ends on eBay.


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