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Re: BestPair III now does 0.1%, 1% and 5%

Subject: Re: BestPair III now does 0.1%, 1% and 5%
From: Jasen Betts
Date: Sat, 06 May 2006 07:59:23 -0000
Newsgroups: sci.electronics.basics, sci.electronics.components, sci.electronics.design
On 2006-05-03, Mike Monett <No@xxxxxxxxx> wrote:
> nospam <nospam@xxxxxxxxxxxxxx> wrote in 
> news:mgai525nfdalk8fqm4m08jl39p3uu4ho00@xxxxxxx:
>
>> Mike Monett <No@xxxxxxxxx> wrote:
>> 
>>>Works great!
>>>
>>>http://www.armory.com/~rstevew/Public/Software/ResCad.zip
>> 
>> Newer version here
>> 
>> http://web.newsguy.com/pentangle/ResCAD20.zip
>
> Thanks. Adding the E192 values is a good idea, but I'm not so sure about 
> mixing  different resistor tolerances. For example, what's the point in 
> paralleling 5% and 0.1% resistors? If they are approximately equal, the 5% 
> tolerance and drift characteristics would dominate, so you would get a very 
> fine adjustment of a lousy resistor:)

when parallelling a 330K 5% and a 100R 0.1% the  0.1% error is going to 
dominate.

Bye.
   Jasen

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