Farnell S27 PSU - any info? - UK Vintage Radio Repair and Restoration Discussion Forum

Mike Phelan · 19th Apr 2006, 9:20 am

Hi folks
Just picked up this unit from Vince - I would hazard a guess of it being early 60s. Adjustable HT 50v to 450v in several ranges and fine control, current limiting, and also various heater outputs - 6.3, 5, 4 etc.
It has a couple of EL34s in it - the two meters need replacing and the dings on the cabinet straightening, but it is (another

) ideal and useful restoration project.
I just need a circuit diagram for completeness' sake - I think it is working.

Maxwell Frere · 19th Apr 2006, 5:02 pm

I have one of these.
Excellent quiality gear.
It' not quite in the same league as my Fluke 555V power supply which uses 807s; which I would call a gold plated Rolls Royce; but it's certainly a BMW or a Merc.
I'm sure I have something somewhere. I'll see if I can find it. I'd be happy to photocopy it for you.

Mike Phelan · 19th Apr 2006, 5:11 pm

Quote:

Originally Posted by Maxwell Frere

I have one of these.
Excellent quiality gear.
It' not quite in the same league as my Fluke 555V power supply which uses 807s; which I would call a gold plated Rolls Royce; but it's certainly a BMW or a Merc.
I'm sure I have something somewhere. I'll see if I can find it. I'd be happy to photocopy it for you.

Thanks, Maxwell - I would really appreciate that if you could.

Station X · 19th Apr 2006, 10:32 pm

I have on of these PSUs and a forum member, I think it was Ed Dinning, sent me a photocopy of the service manual.

I have the photocopy to hand, so if Maxwell can't find his copy I'd better do my bit and scan the manual for electronic transmission. I'd have to split the A3 diagrams in two though.

Graham.

Colin · 19th Apr 2006, 10:49 pm

Hi gents, the documents you're looking for are available as a PDF on Jon's website here ...

http://www.thevalvepage.com/servdata/testeq/farnell.htm

rgds
Colin

Mike Phelan · 20th Apr 2006, 8:04 am

Thank you, Colin, that is exactly what I need. And, thanks for everyone else for looking and offering a manual.

Thread can be closed now.

I'll start a new one when I restore it.

19th Apr 2006, 9:20 am	#1
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Farnell S27 PSU - any info? Hi folks Just picked up this unit from Vince - I would hazard a guess of it being early 60s. Adjustable HT 50v to 450v in several ranges and fine control, current limiting, and also various heater outputs - 6.3, 5, 4 etc. It has a couple of EL34s in it - the two meters need replacing and the dings on the cabinet straightening, but it is (another ) ideal and useful restoration project. I just need a circuit diagram for completeness' sake - I think it is working. __________________ Mike.

19th Apr 2006, 5:02 pm	#2
Maxwell Frere Retired Dormant Member Join Date: Apr 2006 Location: Ashford, Kent. Posts: 14	Re: Farnell S27 PSU - any info? I have one of these. Excellent quiality gear. It' not quite in the same league as my Fluke 555V power supply which uses 807s; which I would call a gold plated Rolls Royce; but it's certainly a BMW or a Merc. I'm sure I have something somewhere. I'll see if I can find it. I'd be happy to photocopy it for you.

19th Apr 2006, 10:32 pm	#4
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Farnell S27 PSU - any info? I have on of these PSUs and a forum member, I think it was Ed Dinning, sent me a photocopy of the service manual. I have the photocopy to hand, so if Maxwell can't find his copy I'd better do my bit and scan the manual for electronic transmission. I'd have to split the A3 diagrams in two though. Graham. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

19th Apr 2006, 10:49 pm	#5
Colin Heptode Join Date: Jun 2004 Location: Ilkley, West Yorkshire, UK. Posts: 656	Re: Farnell S27 PSU - any info? Hi gents, the documents you're looking for are available as a PDF on Jon's website here ... http://www.thevalvepage.com/servdata/testeq/farnell.htm rgds Colin

20th Apr 2006, 8:04 am	#6
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Re: Farnell S27 PSU - any info? Thank you, Colin, that is exactly what I need. And, thanks for everyone else for looking and offering a manual. Thread can be closed now. I'll start a new one when I restore it. __________________ Mike.