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Author Topic: 600pF caps.... How do these connect?  (Read 341 times)
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keto
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« on: September 28, 2011, 05:12:09 PM »

Hey all, I'll be changing the interstage cap in a SEX amp to 600pF, for a 1065hz filter with the 249K grid bias there, but the caps I bought are silver mica and I don't know how they connect. Any help greatly appreciated! --keto


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Tom Jones
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« Reply #1 on: September 28, 2011, 06:29:09 PM »

Looks like the contacts are the tab (with the hole in it) and the crimped "C" shaped shell.  Check across these connections with a Ohmmeter and you should get an "open" reading.  The capacitance setting on my VOM isn't sensitive enough for measuring capacitance this small so unless you have a dedicated capacitance meter you may not be able to verify it that way.
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Randall Massey
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keto
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« Reply #2 on: September 28, 2011, 06:59:28 PM »

Thanks a lot. Yep, that's how they work. It turns out I ordered the wrong part. I think I'll go with these... http://mx.mouser.com/ProductDetail/Cornell-Dubilier/CD19FD621FO3F/?qs=sGAEpiMZZMtLiKaZgV7flbpGgzyLx4f%2ftjAkwQg97lE%3d
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Tom Jones
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« Reply #3 on: September 29, 2011, 09:03:37 AM »

Those would be much easier to install.  What kind are those you pictured???  Very odd looking.  Military?
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Grainger Morrison,

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keto
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« Reply #4 on: September 29, 2011, 12:01:16 PM »

They're "silver mica" types, which I must have selected (without looking at the picture!) because they are +/- 1%
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Tom Jones
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