UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Radio (domestic)

Notices

Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

Closed Thread
 
Thread Tools
Old 10th Oct 2015, 6:11 pm   #1
FERNSEH
Dekatron
 
FERNSEH's Avatar
 
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
Default Mystery power supply unit.

Found this power supply unit yesterday. Any ideas what equipment it was ever used in? One end of the unit has the on-off switch and the other has a socket for a standard four pin rectifier valve, an UU5 for example.
One side has the voltage selector panel. The transformer primary has tappings for 110 to 150 volts and the more usual 200 to 250V.
There is a B7 socket on the base of the unit for the heaters and HT supply for the apparatus it was designed to supply.
Unfortunately the secondary winding for the full wave HT rectifier has shorted turns. It should be 265-0-265 ohms. One of the windings is reading only 15 ohms.

DFWB.
Attached Thumbnails
Click image for larger version

Name:	PSU_0197.jpg
Views:	263
Size:	84.6 KB
ID:	114105   Click image for larger version

Name:	PSU_0198.jpg
Views:	238
Size:	67.7 KB
ID:	114106   Click image for larger version

Name:	PSU_0199.jpg
Views:	288
Size:	54.6 KB
ID:	114107  
FERNSEH is offline  
Old 11th Oct 2015, 9:29 pm   #2
marlowradio
Triode
 
Join Date: Jun 2011
Location: Marlow, Buckinghamshire, UK.
Posts: 32
Default Re: Mystery power supply unit.

It looks similar to one that was fitted in a 30's mcmichael battery radio
Is it home brew or professionaly built??

Regards
Steve
marlowradio is offline  
Old 12th Oct 2015, 11:00 am   #3
FERNSEH
Dekatron
 
FERNSEH's Avatar
 
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
Default Re: Mystery power supply unit.

I'd say it was professionally built, but no indication who the manufacturer was.
The yellow sleeved electrolytic capacitor is not the original. There is evidence of
the original card block type of reservoir and smoothing capacitor.

DFWB.
FERNSEH is offline  
Old 12th Oct 2015, 12:15 pm   #4
stevehertz
Dekatron
 
stevehertz's Avatar
 
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
Posts: 8,809
Default Re: Mystery power supply unit.

The fact that it is shrouded suggests that it is in some way a stand alone unit or a PS that sits in the bottom of a radiogram or console radio.
__________________
A digital radio is the latest thing, but a vintage wireless is forever..
stevehertz is offline  
Old 12th Oct 2015, 12:48 pm   #5
D Cassidy
Retired Dormant Member
 
D Cassidy's Avatar
 
Join Date: Oct 2015
Location: Fenwick, Glasgow, UK.
Posts: 127
Default Re: Mystery power supply unit.

Hello.
I have a power unit that looks to me the same, it's made by Milnes Radio. Once I've figured out posting photographs I will do the necessary.
D Cassidy is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 11:29 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.