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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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21st Oct 2021, 8:27 pm | #1 |
Octode
Join Date: Dec 2008
Location: Wincanton, Somerset, UK.
Posts: 1,757
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Diode ident?
I think this is marked as a diode in a Leak Troughline tuner: it doesn't seem to be very diode-like (according to a DVM test). Does anyone know the type /spec?
John |
21st Oct 2021, 8:31 pm | #2 |
Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,823
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Re: Diode ident?
It's a little selenium rectifier STC M1 or an M3
There was thread about them a while back. https://www.vintage-radio.net/forum/...d.php?t=120655 Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk Last edited by Cobaltblue; 21st Oct 2021 at 8:34 pm. Reason: One link added |
21st Oct 2021, 8:33 pm | #3 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,787
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Re: Diode ident?
It looks like a selenium signal diode. I don't know anything about Troughlines though.
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21st Oct 2021, 8:36 pm | #4 |
Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,823
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Re: Diode ident?
They can usually be replaced by an ordinary diode such as a OA81 or even an 1N1418.
Don't know what they are used for in the throughline for though. Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk |
21st Oct 2021, 9:12 pm | #5 |
Octode
Join Date: Dec 2008
Location: Wincanton, Somerset, UK.
Posts: 1,757
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Re: Diode ident?
Many thanks everyone: this is what I've now found as a result of your leads.
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