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Old 12th Nov 2022, 6:17 pm   #1
Dorian27
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Default Hunts capacitors

I have a very small Hunts capacitor that. has been dammaged it a 0.001uf 400v. Can i replace with a 630 volt one instead of 400v
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Old 12th Nov 2022, 6:24 pm   #2
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Default Re: Hunts capacitors

Yes. If it is a decoupler make sure it is fitted in the same physical place as the original. It will probably be smaller but no problem. J.
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Old 14th Nov 2022, 7:09 pm   #3
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Default Re: Hunts capacitors

Any capacitor rated at 400V or higher that will fit will be OK.
Of course, it's best to use on of the same type (e.g. film)
It would be worth checking for any other Hunts capacitors that are present as they are usually best replaced on sight.
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Old 14th Nov 2022, 9:32 pm   #4
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Default Re: Hunts capacitors

Quote:
Originally Posted by whiskas View Post
It would be worth checking for any other Hunts capacitors that are present as they are usually best replaced on sight.
Is that true for all Hunts capacitors, including electrolytic types?

PMM
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Old 14th Nov 2022, 10:16 pm   #5
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Default Re: Hunts capacitors

I think we all know that Hunts made some of the best electrolytic capacitors that there are - probably more by luck than design, though.

We need to try to remember to be specific when advising on things like this to save on possible confusion.
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Old 16th Nov 2022, 2:53 pm   #6
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Default Re: Hunts capacitors

One post moved to a new thread here:-

https://www.vintage-radio.net/forum/...d.php?t=196057
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Old 16th Nov 2022, 3:08 pm   #7
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Default Re: Hunts capacitors

Hunts were not a particularly poor manufacturer. It's just that the technology used to make consumer grade capacitors in the 1940s and 50s has a finite life - these things are over 60 years old now. British restorers also encounter a disproportionate number of bad Hunts caps simply because Hunts supplied most of the UK manufacturers.
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Old 16th Nov 2022, 3:33 pm   #8
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Default Re: Hunts capacitors

Indeed, youtube's american restorer Shango066 has choice words to say about american-made vintage capacitors from Mallory, Sprague, Cornell Dubilier, Aerovox and a thousand others. I doubt he's changed many Hunts over there!
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Old 18th Nov 2022, 4:45 pm   #9
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Default Re: Hunts capacitors

My Eddystone only had one "Mouldseal", which I replaced years ago, but the "Dipseal" ones are all still functioning.
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Old 18th Nov 2022, 7:18 pm   #10
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Default Re: Hunts capacitors

Quote:
Originally Posted by paulsherwin View Post
Hunts were not a particularly poor manufacturer. It's just that the technology used to make consumer grade capacitors in the 1940s and 50s has a finite life - these things are over 60 years old now. British restorers also encounter a disproportionate number of bad Hunts caps simply because Hunts supplied most of the UK manufacturers.
Paul, that's one way of looking at it. I'd tend to think that to some extent they just 'winged it' when using dielectric and outer casing materials that they had little or no knowledge of WRT how long they would last even in relatively stable, un-arduous conditions. The bottom line is, there are good and bad caps from the same era, and Hunts produced some shockers.
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