Basic e'poration advice

Dr. Duncan Clark Duncan at nospam.demon.co.uk
Tue Feb 29 06:09:04 EST 2000


In article <280220001853307718%jpcd100 at mole.bio.cam.ac.uk>, John Dixon
<jpcd100 at mole.bio.cam.ac.uk> writes
>Should I be altering something to get that time constant up? - sorry in advance 
>if it's obvious like halving/doubling something but my recollection of the 
>equations that govern electricity has evaporated long ago! 

To increase the time constant from 2.5 to 5msec then increase either the
capacitance or resistance by a factor of 2. What you are measuring is
the half life of the voltage decay. Increasing capacitance or resistance
slows down the decay thereby so increasing the time constant.

Duncan
-- 
The problem with being on the cutting edge is that you occasionally get 
sliced from time to time....

Duncan Clark
DNAmp Ltd.
Tel: +44(0)1252376288
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http://www.dnamp.com
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