Help with power unit identification - UK Vintage Radio Repair and Restoration Discussion Forum

snafuAgain · 5th Feb 2010, 11:42 pm

Hi I found this power unit clearing my father's garage, just curious to know what it is... the back is marked

POWER UNIT
TYPE 8030
A^M REF 10K/1820

Thanks for any help

McMurdo · 5th Feb 2010, 11:52 pm

Well thats a military arrowhead symbol underneath

Peter.N. · 6th Feb 2010, 12:14 am

It appears to be a vibrator pack of some sort, similar to those used in car radios of the time, with possibly a 12 volt input.

Peter

glowinganode · 6th Feb 2010, 12:43 am

AM = Air Ministry, so aircraft related. Certainly an HT p/s for some small radio.
Rob.

Hermit6345 · 6th Feb 2010, 1:08 am

I wonder if, with a number like 8030 it could possibly be a power supply for teleprinters in the field? I had an Army unit with a vibrator in it for battery use in the field. It would have given 80-0-80 volts at up to 30mA(20mA nominal) for the printer magnet. Could it be that the two rectifiers are one for each polarity? Do some voltage measurements across the smoothing cap. On the other hand it could just be, as others have suggested, a vibrator pack for a small radio.

Ian

snafuAgain · 7th Feb 2010, 9:02 pm

Thanks to you all for your thoughts; it's not really my "bag" so I won't fiddle with it, just auction for Alzheimer's charity... cancer got the old man but at least he kept his marbles & sense of humour to the end

GMB · 8th Feb 2010, 1:04 am

Quote:

with a number like 8030

I have never seen an AM PU where there is any logic to the number.

It is certainly a late Air Ministry power unit but I don't have anything on this one.

5th Feb 2010, 11:42 pm	#1
snafuAgain Retired Dormant Member Join Date: Jun 2008 Location: Ashford, Kent, UK Posts: 18	Help with power unit identification Hi I found this power unit clearing my father's garage, just curious to know what it is... the back is marked POWER UNIT TYPE 8030 A^M REF 10K/1820 Thanks for any help Attached Thumbnails

5th Feb 2010, 11:52 pm	#2
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,273	Re: Help with power unit identification Well thats a military arrowhead symbol underneath __________________ Kevin

6th Feb 2010, 12:14 am	#3
Peter.N. Dekatron Join Date: Jul 2008 Location: Charmouth, Dorset, UK. Posts: 3,601	Re: Help with power unit identification It appears to be a vibrator pack of some sort, similar to those used in car radios of the time, with possibly a 12 volt input. Peter

6th Feb 2010, 12:43 am	#4
glowinganode Octode Join Date: Apr 2009 Location: Aylesbury, Buckinghamshire, UK. Posts: 1,522	Re: Help with power unit identification AM = Air Ministry, so aircraft related. Certainly an HT p/s for some small radio. Rob. __________________ We have done so much, for so long, with so little, we are now qualified to do anything with nothing.

6th Feb 2010, 1:08 am	#5
Hermit6345 Rest in Peace Join Date: Oct 2006 Location: North Wiltshire, UK. Posts: 638	Re: Help with power unit identification I wonder if, with a number like 8030 it could possibly be a power supply for teleprinters in the field? I had an Army unit with a vibrator in it for battery use in the field. It would have given 80-0-80 volts at up to 30mA(20mA nominal) for the printer magnet. Could it be that the two rectifiers are one for each polarity? Do some voltage measurements across the smoothing cap. On the other hand it could just be, as others have suggested, a vibrator pack for a small radio. Ian

7th Feb 2010, 9:02 pm	#6
snafuAgain Retired Dormant Member Join Date: Jun 2008 Location: Ashford, Kent, UK Posts: 18	Re: Help with power unit identification Thanks to you all for your thoughts; it's not really my "bag" so I won't fiddle with it, just auction for Alzheimer's charity... cancer got the old man but at least he kept his marbles & sense of humour to the end