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Old 3rd May 2012, 04:56 PM   #22891
bcarso is offline bcarso  United States
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And what about the interconnects with batteries? Yes, if your driving impedance is high enough you will hear audible differences due to microphonics.
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Old 3rd May 2012, 05:05 PM   #22892
SY is offline SY  United States
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And what about the interconnects with batteries? Yes, if your driving impedance is high enough you will hear audible differences due to microphonics.
If driving impedance is THAT high, shoot the incompetent fellow who designed it. Then shoot the guy who sold it to you.
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Old 3rd May 2012, 11:01 PM   #22893
dimitri is offline dimitri  United States
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there is a nice piece in the latest EW about MLCC's
Do you mean Electronics World? Is it still exist?
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Old 3rd May 2012, 11:29 PM   #22894
Bonsai is offline Bonsai  Taiwan
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Electronics Weekly. My apologies.
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Old 4th May 2012, 12:27 AM   #22895
dimitri is offline dimitri  United States
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Thanks, here is the link Can you pls drop me PM?

Last edited by dimitri; 4th May 2012 at 12:30 AM.
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Old 4th May 2012, 12:46 AM   #22896
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Welcome back, Dimitri!
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Old 4th May 2012, 02:11 PM   #22897
bcarso is offline bcarso  United States
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Thanks, here is the link
Thanks for that. Readers should note the typo where TCC is given for X7R as +/- 15%/degree C (ouch!). Not even the Y5s and Z5s are that bad!

Brad
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Old 5th May 2012, 05:04 AM   #22898
BV is offline BV  Slovakia
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Quote:
Readers should note the typo where TCC is given for X7R as +/- 15%/degree C (ouch!).
?? from AVX datasheet
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X7R is the most popular of these intermediate dielectric constant materials. Its temperature variation of capacitance is within 15% from -55C to +125C.
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Old 5th May 2012, 06:46 AM   #22899
bcarso is offline bcarso  United States
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?? from AVX datasheet
OK that explains how they got it garbled. That variation over the whole temp range makes sense.

Thanks for digging that out.
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Old 5th May 2012, 11:38 PM   #22900
Bonsai is offline Bonsai  Taiwan
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It's the change in capacitance with voltage that is really bad also.

I also had a case a few months ago where I had one 'singing' in a snubber circuit. When I held the cap between my thumb and forefinger it stopped.
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