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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Hello, everyone!
I am new here, on this forum and I need some help. Here is the story.
I have come across a number of old aluminum can capacitors rated between 20-170 uF at 200-500V. Some of them were salvaged from old equipment, some of them are NOS. I have checked them for leakage using a Heathkit IT-11, which does not function very well and is not very reliable. I trashed some of the caps, but I also kept about 20 of them that checked OK. I am now trying to reform them using one of those simple circuits found on the web with a few mods. I added a milliampermeter in series with the capacitor and a voltmeter across it. Therefore, when I charge the capacitors I can measure the current through them at different voltage values. I am getting currents between 40-500 uA, depending of the capacitor value and the test voltage.
Here comes the BIG QUESTION!!!
Could any of you, please, give me an idea what the allowable current through these old reformed capacitors might be? By “allowable current” I mean something like how far can I go before the caps don’t filter well and I get hum in my tube circuits. Of course, I could do it by trial and error, but it would be nice to know ahead of time what I should expect.
Thank you in advance for you input.
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Topic - Elecrolytic capacitor reforming - aandre2200 10:37:45 08/17/12 (5)
- Link - 1973shovel 13:50:35 08/17/12 (0)
- RE: Elecrolytic capacitor reforming - Tom Bavis 13:36:24 08/17/12 (0)
- RE: Elecrolytic capacitor reforming - Neff 13:29:40 08/17/12 (0)
- RE: Elecrolytic capacitor reforming - grhughes 13:10:14 08/17/12 (0)
- RE: Elecrolytic capacitor reforming - Tre' 10:44:23 08/17/12 (0)
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