RE: SCIENCE FAIR BOTTLE CAPACITOR ExPERIMENT HELP!!!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Thomas <tom-at-pwrcom-dot-com.au> 

A low cost ESR (equivalent series resistance) meter can be built from a kit
obtainable in Australia.

http://members.ozemail-dot-com.au/~bobpar/esrmeter.htm

I have built one of these, and they work extremely well.

Bah! - Just checked - it will not measure below 1uF! And as the design is
microprocessor based, it would be rather hard to change.

Still, using this device and a  CRO might give comparative measurements
accurate enough for the project.

Tom L.


 > Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
 >
-snip-

 >
 > ... unless you have some sophisticated test
 > equipment (RCL bridge), it will be very difficult to measure
 > the series
 > resistance.