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Old 13th Mar 2018, 10:01 am   #1
vinrads
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Default Guess what it is time

Some of you older Gent's will probably know. Mick.
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Old 13th Mar 2018, 10:05 am   #2
M0FYA Andy
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Default Re: Guess what it is time

I would think a resistor is most likely? Or given its age, a resistance...........

Andy
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Old 13th Mar 2018, 10:07 am   #3
crackle
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Default Re: Guess what it is time

Grid leak resistor?

I turned it over so you can all read the writing.
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Old 13th Mar 2018, 10:12 am   #4
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Default Re: Guess what it is time

One right one wrong .
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Old 13th Mar 2018, 10:13 am   #5
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Default Re: Guess what it is time

Wire wound anode resistor?

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Old 13th Mar 2018, 10:25 am   #6
Boater Sam
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Default Re: Guess what it is time

Non inductive wire wound resistor?
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Old 13th Mar 2018, 10:36 am   #7
vinrads
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Default Re: Guess what it is time

Well done Lawrence,it is a wire wound 250 k ohm Anode load resistor it states its constant and damp proof, I suppose it's allowed to be o/c after all these years no sign of damp though I have done one, the ends come off quite easily I drill a hole through the ends and fit a modern resistor , made by the Varley magnet company , back to the set now another steam radio I am working on .Mick.
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Old 13th Mar 2018, 10:42 am   #8
ms660
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Default Re: Guess what it is time

I used Google

https://mullard.org/products/vintage...ey-ri-Ferranti

Lawrence.
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Old 15th Mar 2018, 12:14 pm   #9
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Default Re: Guess what it is time

A fuse of some sort.
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Old 15th Mar 2018, 12:59 pm   #10
vinrads
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Default Re: Guess what it is time

Sorry no it's a vintage 250k wire wound resistor , I think Lawrence said it all . thanks for the reply ,Mick.
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Old 15th Mar 2018, 1:22 pm   #11
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Default Re: Guess what it is time

Making 250,000 ohms with any resistance wire must be very many turns of very fine wire! As mentioned, it can be forgiven for being open-circuit after all that time, I wonder how reliable they were in the day?
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