[sdiy] integrator / capacitor leakage

Ian Fritz ijfritz at earthlink.net
Sat Dec 3 18:56:59 CET 2005


At 09:37 AM 12/3/05, Grant Richter wrote:
>I think the answer is so obvious, it is hard to see.
>Any multiplication (amplification) of the integrator output will
>multiply the errors by the same factor.
>
>So, commutative axiom says:
>
>(Signal + Error) * 10 = (10 * Signal) + (10 * Error)
>
>Since calculus is built on algebra, if you put an integral sign in
>front of terms, it is still axiomatically correct.

Your argument relies on an assumed linearity of the error. The question is 
whether that assumption is justified, and if no, how to best minimize the 
error.

   Ian 




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