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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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8th May 2021, 9:01 pm | #1 |
Triode
Join Date: Mar 2014
Location: Northampton, Northamptonshire, UK
Posts: 49
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Admiralty capacitors - suggestions
As part of a recent Hall I have a pretty grubby homelab type 10 signal generator.
There's some really interesting looking caps in there Admiralty 1.0MFD 1000V that I'd like to keep the cases on. Does anyone have experience in fitting these things and filing with modern caps? Cheers Steve |
8th May 2021, 9:03 pm | #2 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,195
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Re: Admiralty capacitors - suggestions
Hi Steve, they are a paper in oil type and normally very reliable. If you can test at working voltage and they are not leaking I would continue to use them
Ed |
8th May 2021, 9:28 pm | #3 |
Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
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Re: Admiralty capacitors - suggestions
I agree with Ed, there's every chance these are as good as the day they were made!
Andy |
8th May 2021, 9:35 pm | #4 |
Octode
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,740
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Re: Admiralty capacitors - suggestions
I repaired a GEC LCR bridge recently with some of these large capacitors, they all tested fine at the rated voltage. Which is just as well as a 2MFD block is used a reference capacitor, with hand written note of 1.95 on the back, the ordinary paper capacitor used to trim the value to 2MFD was knackered though.
David |
8th May 2021, 11:04 pm | #5 |
Banned
Join Date: Jun 2015
Location: Mareeba, North Queensland, Australia
Posts: 2,704
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Re: Admiralty capacitors - suggestions
I believe many of these PIO caps were filled with PCB too!!. I would be very careful when handling the oil and oily insides.
Joe |
8th May 2021, 11:52 pm | #6 |
Triode
Join Date: Mar 2014
Location: Northampton, Northamptonshire, UK
Posts: 49
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Re: Admiralty capacitors - suggestions
Thanks guys, that's good news I'll check them out!
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9th May 2021, 6:55 am | #7 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,903
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Re: Admiralty capacitors - suggestions
Take care not to get any ex-capacitor oil on you or your surroundings. Some of them used PCBs type oils. There's no easy way to tell, so treat it all as risky.
David
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