Re: Caps in series

• To: tesla-at-pupman-dot-com
• Subject: Re: Caps in series
• From: Ed Phillips <evp-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 03 Jul 1999 10:54:34 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

"Hi Tina,

I read your mail and think about ... the voltages divide evenly... If
you
put 2 capacitors 100 pF and 1 nF in series and proposed you have ideal
good
capacitors then the total voltage of esp. 10 kV divides to 1 V over the
1 nF
Capacitor and the rest (10 kV- 1 V) over the 100 pF Capacitor. Is that
what
you mean?

regards

stone"

	Huh?  The capacitance ratio is 10:1, not 1000:1.  1 nF is 1000 pF. 
Think of it this way.  As current flows through the capacitors to charge
them, the same current flows through both.  Since the charge equals the
current times time, it will be the same for both capacitors and the
voltages will be inversely proportional to the capacitance, since Q=CV.

Ed

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