Can any one identify this Solid State, valve rectifier replacement? - UK Vintage Radio Repair and Restoration Discussion Forum

NickG0HIK · 9th Oct 2017, 10:09 am

Hi,

As per title,

A friend was asking for a solid state rectifier for a valve project some time ago. I knew that I had a couple, but it has taken me ages to come across them (well one of them actually).
Before I give it to him (if he still needs it) I would like to know the specs.

It's an IO base, appears to be marked AEI HTU2-2A, but it's pretty worn lettering, so it could be something else.

Thanks

Nick

ms660 · 9th Oct 2017, 10:26 am

HTJ2-2A..link for ID only (if allowed):

http://www.ebay.co.uk/itm/AEI-HTJ2-2...-/391372037637

Lawrence.

cmjones01 · 9th Oct 2017, 10:28 am

It's a rather lovely thing, that. The glass envelope is so much more satisfying than a couple of 1N4007s wedged into an octal base.

Chris

NickG0HIK · 9th Oct 2017, 10:57 am

Thanks Chaps,

Got it now, one seller says that it's equivalent of GZ32 etc, I'll pass that on to my mate.

Yes, so much nicer than a couple of diodes wedged in to the holder with matchsticks

Regards

Nick

'LIVEWIRE?' · 9th Oct 2017, 11:20 am

I doubt if I'd pay £25 for one of those. Rather do as I once did in a Roberts P5A, which was to solder a couple on 1N400x diodes to the valve base, with appropriate series resistor, using, IIRC, unused pins, then leave the faulty rectifier valve plugged in, but disconnected, so that the above-chassis appearance wasn't altered.

Reelman · 9th Oct 2017, 11:51 am

Birkett of Lincoln was selling SS “valve” rectifiers at the Hamfest the other week for 50p, new and boxed. He appeared to have quite a few.
Peter

NickG0HIK · 9th Oct 2017, 9:13 pm

50p a bargain, £25 maybe not.
But I have had these knocking around for years so glad that someone in our club can make use of them.
Nick

AC/HL · 9th Oct 2017, 10:56 pm

I've got a couple somewhere in the junk pile. Not glass though, cylindrical aluminium, from old Pye PMR kit I think.

Jon_G4MDC · 10th Oct 2017, 8:57 pm

Oh, now, Hello Bill, AC/HL.
I think I remember something like that in a Pye U450L maybe?
Strange item, never did get to the bottom of it...<digging>

Julesomega · 11th Oct 2017, 6:42 pm

I pulled a couple of plastic-packaged "5R4" devices from some 60s equipment a long time ago: made by STC

G6Tanuki · 11th Oct 2017, 7:15 pm

I remember the aluminium-cased [stuffed full of BY100s] jobs in Pye F27 base-stations.

"International Rectifier" have historically offered a range of these: I've used their "IR14" octal-based offerings in plenty of cases: STC/AEI also did a "CV7137" with similar intent:

http://www.tubecollector.org/cv7137.htm

TrevorG3VLF · 11th Oct 2017, 8:39 pm

I have somewhere a couple of semiconductor rectifiers on octal bases. The connections were different from the normal 5R4, 5U4 connections, so be warned.

barretter · 12th Oct 2017, 5:40 pm

Quote:

Originally Posted by Reelman

Birkett of Lincoln was selling SS “valve” rectifiers at the Hamfest the other week for 50p, new and boxed.

AEI in Lincoln used to make a solid state bridge rectifier on an octal base, the CV7136. Perhaps Mr Birkett bought up their stock?

paulsherwin · 10th Mar 2021, 5:58 pm

Reopened by request.

Julesomega · 10th Mar 2021, 6:50 pm

Came across the STC octal solid state rectifiers again today so I measured it: wondered if there were any power resistors, but the heater pin 8 is absent, and the two diodes just measure as a normal Si diode. It is a replacement for the 5R4, the full type number of the device shown above is AV/5R4, and there are date codes? such as B67 and C67 which seems appropriate for the period when I found them

9th Oct 2017, 10:09 am	#1
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	Can any one identify this Solid State, valve rectifier replacement? Hi, As per title, A friend was asking for a solid state rectifier for a valve project some time ago. I knew that I had a couple, but it has taken me ages to come across them (well one of them actually). Before I give it to him (if he still needs it) I would like to know the specs. It's an IO base, appears to be marked AEI HTU2-2A, but it's pretty worn lettering, so it could be something else. Thanks Nick Attached Thumbnails

9th Oct 2017, 10:26 am	#2
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Can any one identify this Solid State, valve rectifier replacment HTJ2-2A..link for ID only (if allowed): http://www.ebay.co.uk/itm/AEI-HTJ2-2...-/391372037637 Lawrence.

9th Oct 2017, 10:28 am	#3
cmjones01 Nonode Join Date: Oct 2008 Location: Warsaw, Poland and Cambridge, UK Posts: 2,677	Re: Can any one identify this Solid State, valve rectifier replacment It's a rather lovely thing, that. The glass envelope is so much more satisfying than a couple of 1N4007s wedged into an octal base. Chris __________________ What's going on in the workshop? http://martin-jones.com/

9th Oct 2017, 10:57 am	#4
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	Re: Can any one identify this Solid State, valve rectifier replacment Thanks Chaps, Got it now, one seller says that it's equivalent of GZ32 etc, I'll pass that on to my mate. Yes, so much nicer than a couple of diodes wedged in to the holder with matchsticks Regards Nick

9th Oct 2017, 11:20 am	#5
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Can any one identify this Solid State, valve rectifier replacment I doubt if I'd pay £25 for one of those. Rather do as I once did in a Roberts P5A, which was to solder a couple on 1N400x diodes to the valve base, with appropriate series resistor, using, IIRC, unused pins, then leave the faulty rectifier valve plugged in, but disconnected, so that the above-chassis appearance wasn't altered.

9th Oct 2017, 11:51 am	#6
Reelman Octode Join Date: Aug 2008 Location: Rotherham, South Yorkshire, UK. Posts: 1,723	Re: Can any one identify this Solid State, valve rectifier replacment Birkett of Lincoln was selling SS “valve” rectifiers at the Hamfest the other week for 50p, new and boxed. He appeared to have quite a few. Peter

9th Oct 2017, 9:13 pm	#7
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	Re: Can any one identify this Solid State, valve rectifier replacment 50p a bargain, £25 maybe not. But I have had these knocking around for years so glad that someone in our club can make use of them. Nick

9th Oct 2017, 10:56 pm	#8
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Can any one identify this Solid State, valve rectifier replacment I've got a couple somewhere in the junk pile. Not glass though, cylindrical aluminium, from old Pye PMR kit I think.

10th Oct 2017, 8:57 pm	#9
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: Can any one identify this Solid State, valve rectifier replacment Oh, now, Hello Bill, AC/HL. I think I remember something like that in a Pye U450L maybe? Strange item, never did get to the bottom of it...<digging>

11th Oct 2017, 6:42 pm	#10
Julesomega Nonode Join Date: Dec 2012 Location: Stockport, Greater Manchester, UK. Posts: 2,106	Re: Can any one identify this Solid State, valve rectifier replacement? I pulled a couple of plastic-packaged "5R4" devices from some 60s equipment a long time ago: made by STC Attached Thumbnails

11th Oct 2017, 7:15 pm	#11
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,998	Re: Can any one identify this Solid State, valve rectifier replacement? I remember the aluminium-cased [stuffed full of BY100s] jobs in Pye F27 base-stations. "International Rectifier" have historically offered a range of these: I've used their "IR14" octal-based offerings in plenty of cases: STC/AEI also did a "CV7137" with similar intent: http://www.tubecollector.org/cv7137.htm

11th Oct 2017, 8:39 pm	#12
TrevorG3VLF Rest in Peace Join Date: Apr 2011 Location: Matlock, Derbyshire, UK. Posts: 1,378	Re: Can any one identify this Solid State, valve rectifier replacement? I have somewhere a couple of semiconductor rectifiers on octal bases. The connections were different from the normal 5R4, 5U4 connections, so be warned.

10th Mar 2021, 5:58 pm	#14
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,945	Re: Can any one identify this Solid State, valve rectifier replacement? Reopened by request.

10th Mar 2021, 6:50 pm	#15
Julesomega Nonode Join Date: Dec 2012 Location: Stockport, Greater Manchester, UK. Posts: 2,106	Re: Can any one identify this Solid State, valve rectifier replacement? Came across the STC octal solid state rectifiers again today so I measured it: wondered if there were any power resistors, but the heater pin 8 is absent, and the two diodes just measure as a normal Si diode. It is a replacement for the 5R4, the full type number of the device shown above is AV/5R4, and there are date codes? such as B67 and C67 which seems appropriate for the period when I found them __________________ - Julian It's good here