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Jim Thompson[_3_] Jim Thompson[_3_] is offline
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Default Piezo capacitance

On Sat, 19 Feb 2011 20:50:56 -0500, Spehro Pefhany
wrote:

On Sat, 19 Feb 2011 17:33:33 -0700, the renowned Jim Thompson
wrote:

Anyone have good guess for the capacitance of a 1" diameter piezo
disk?


Probably a few tens of nF for a 20mm 'bender' disk (which will be
larger when mounted on the metal backing).


Gads!


Likewise, how much capacitance in around 100' of typical telephone
twisted pair?

...Jim Thompson


10-20pF per foot comes to mind.


Best regards,
Spehro Pefhany


Thanks!

...Jim Thompson
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