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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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23rd Jan 2022, 3:50 pm | #1 |
Dekatron
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
Posts: 8,809
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Identify this Marconi valve please
This is a Marconi B5 base, screened valve. Further than that, can anyone identify it please? You can see on the top that it says 34D41? But that doesn't bring anything up in a search. Thanks.
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23rd Jan 2022, 3:52 pm | #2 |
Nonode
Join Date: Dec 2002
Location: Coulsdon, Surrey, UK.
Posts: 2,109
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Re: Identify this Marconi valve please
Could be a D41
The internal structure here looks similar : http://www.r-type.org/exhib/aaa0577.htm Andy |
23rd Jan 2022, 3:59 pm | #3 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Identify this Marconi valve please
Marconi D41....Photo on Ebay.
Lawrence. |
23rd Jan 2022, 4:14 pm | #4 |
Dekatron
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
Posts: 8,809
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Re: Identify this Marconi valve please
Thanks Andy, looks a good candidate. Let's see what others say. I can always drop it into my Mullard valve tester and test it as D41 and see if it wants to play.
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23rd Jan 2022, 4:19 pm | #5 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Identify this Marconi valve please
A Marconi metalized D41.
Lawrence. |
23rd Jan 2022, 4:44 pm | #6 |
Dekatron
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
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Re: Identify this Marconi valve please
Thanks Lawrence.
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6th Feb 2022, 10:54 am | #7 |
Dekatron
Join Date: Sep 2011
Location: Rugeley, Staffordshire, UK.
Posts: 8,809
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Re: Identify this Marconi valve please
I think we're certain on this one now mods, thanks.
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