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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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9th Oct 2017, 10:09 am | #1 |
Hexode
Join Date: Jul 2010
Location: Ireleth-in-Furness, Cumbria, UK.
Posts: 286
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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 |
9th Oct 2017, 10:26 am | #2 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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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 |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,678
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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
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9th Oct 2017, 10:57 am | #4 |
Hexode
Join Date: Jul 2010
Location: Ireleth-in-Furness, Cumbria, UK.
Posts: 286
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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 |
Rest in Peace
Join Date: Mar 2006
Location: N.W. Oxfordshire(Chipping Norton)
Posts: 7,306
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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.
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9th Oct 2017, 11:51 am | #6 |
Octode
Join Date: Aug 2008
Location: Rotherham, South Yorkshire, UK.
Posts: 1,723
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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 |
Hexode
Join Date: Jul 2010
Location: Ireleth-in-Furness, Cumbria, UK.
Posts: 286
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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 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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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.
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10th Oct 2017, 8:57 pm | #9 |
Nonode
Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,015
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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 |
Nonode
Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 2,113
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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
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11th Oct 2017, 7:15 pm | #11 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 14,005
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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 |
Rest in Peace
Join Date: Apr 2011
Location: Matlock, Derbyshire, UK.
Posts: 1,378
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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.
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12th Oct 2017, 5:40 pm | #13 |
Heptode
Join Date: Jan 2006
Location: Todmorden, West Yorkshire, UK.
Posts: 870
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Re: Can any one identify this Solid State, valve rectifier replacment
AEI in Lincoln used to make a solid state bridge rectifier on an octal base, the CV7136. Perhaps Mr Birkett bought up their stock?
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10th Mar 2021, 5:58 pm | #14 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,957
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Re: Can any one identify this Solid State, valve rectifier replacement?
Reopened by request.
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10th Mar 2021, 6:50 pm | #15 |
Nonode
Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 2,113
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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
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