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Re: A question about LCR circuits



Subject:      Re: A question about LCR circuits
       Date:  Mon, 19 May 1997 11:34:50 +1200
       From:  "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
Organization: Wellington Polytechnic, NZ
         To:  tesla-at-pupman-dot-com


John,
       I'm sorry. The 1/wLC is an obvious typo. Should have been 
1/wCR of course. But you knew that didn't you :)

Malcolm

> >>   You show that   Q = sqrt(L/C)/R   Where did you find this equation? 
> >
> >I showed the derivation in this very place not two months ago.
> >Take Q = wl/R, Q = 1/wLC
> >Multiply them to give Q^2 = wl/R x 1/wLC
> >do the algebra, then take the square root.
> >
> >----------------------------------------------
>  
>  I do not agree that your derivation and your equation Q = 1/wLC  are
> correct because an equation for the Q factor must contain a resistance
> (R).