Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Chinese\s+Caps\s+Defective\s+\@\s+RF\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Chinese\s+Caps\s+Defective\s+\@\s+RF\s*$/: 9 ]

Total 9 documents matching your query.

1. [Amps] Chinese Caps Defective @ RF (score: 1): Author: "Jim W7RY" <jimw7ry@gmail.com>; Date: Fri, 23 Mar 2012 23:00:41 -0700; Well I had another Chinese cap blow up on me in my 8877 amplifier. I had 3ea 1000PF 12KV caps in parallel for the plate blocking caps. I was tuning the amp on 10 meters and KERBLEWEY! I have successf; /archives//html/Amps/2012-03/msg00248.html (8,320 bytes)
2. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Sat, 24 Mar 2012 14:56:57 +0800; I think these caps widely use in static dust catcher/spray-paint, NOT for high RF current ! Well I had another Chinese cap blow up on me in my 8877 amplifier. I had 3ea 1000PF 12KV caps in parallel f; /archives//html/Amps/2012-03/msg00249.html (9,365 bytes)
3. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: Jim Barber <audioguy@q.com>; Date: Sat, 24 Mar 2012 00:17:11 -0700; I bought 20 of those on eBay and just hipot tested them TODAY, assuming they're the same thing. They break down around 4000 to 5000 VDC, even with no RF current on them. No warning, no leakage curren; /archives//html/Amps/2012-03/msg00250.html (10,179 bytes)
4. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: mike kendall <ke6cvh@yahoo.com>; Date: Sat, 24 Mar 2012 01:00:06 -0700 (PDT); Jim, Isn't Y5T that is listed a class II ceramic? The NPO/N750/N1500 are all class I ceramics that won't age like the class II and IV do. Also, with the lesser classes, when you look at the cu; /archives//html/Amps/2012-03/msg00252.html (11,290 bytes)
5. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sat, 24 Mar 2012 08:17:16 -0500; You have a lot of circulating current through blocking caps on 10 m. For a critical application, I'd stick with a known manufacturer like HEC where you can see a range of specifications and test data; /archives//html/Amps/2012-03/msg00254.html (7,872 bytes)
6. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sat, 24 Mar 2012 10:07:15 -0400; While new HEC prices are a bit ridiculous there is enough high quality used doorknobs around plus the Russian surplus RF caps are also excellent. I passed over those Chinese caps as a bad deal years; /archives//html/Amps/2012-03/msg00255.html (9,244 bytes)
7. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sat, 24 Mar 2012 13:05:41 -0500; Indeed--a good example is these CRL doorknobs: http://www.ebay.com/itm/Door-Knob-Capacitor-75-pF-7500VDC-N750-kit-of-2-/22071330273 about 10 bucks each. I bought a pair and they are good caps. Unfort; /archives//html/Amps/2012-03/msg00257.html (8,246 bytes)
8. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: Jim Barber <audioguy@q.com>; Date: Sat, 24 Mar 2012 14:39:43 -0700; Has anyone done RF testing on the big doorknobs used in laser power supplies? Many of the 20-40KV caps sold on eBay come from surplus laser gear and were not originally sold for RF use. It would be i; /archives//html/Amps/2012-03/msg00259.html (10,498 bytes)
9. Re: [Amps] Chinese Caps Defective @ RF (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sat, 24 Mar 2012 18:41:07 -0400; Ameritron and others seem to get by with Teflon disc caps as Load padders and plate blockers in 2000-2500W amps. I havent looked at prices in quite awhile. Carl ______________________________________; /archives//html/Amps/2012-03/msg00261.html (11,978 bytes)

Current List: 1 - 9
Page: [1]