|
Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
|
Thread Tools |
10th Oct 2015, 6:11 pm | #1 |
Dekatron
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
|
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. |
11th Oct 2015, 9:29 pm | #2 |
Triode
Join Date: Jun 2011
Location: Marlow, Buckinghamshire, UK.
Posts: 32
|
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 |
12th Oct 2015, 11:00 am | #3 |
Dekatron
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
|
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. |
12th Oct 2015, 12:15 pm | #4 |
Dekatron
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
Posts: 8,809
|
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.. |
12th Oct 2015, 12:48 pm | #5 |
Retired Dormant Member
Join Date: Oct 2015
Location: Fenwick, Glasgow, UK.
Posts: 127
|
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. |