[sdiy] Pole Dancing

Harald sdiy at haraldswerk.de
Wed Sep 19 18:09:24 CEST 2018


Found it. My fault. It needs an extra click within the graphic to show 
the results. Only moving the sliders is not sufficient.

Am 19.09.18 um 17:12 schrieb Harald:
> Thanks Don. Interesting article. Unfortunately, for me the graphic demo 
> is mot working. No graphs to be seen, numbers are moving when the the 
> sliders are moved. Using Firefox 60.2  on Linux Leap 15.0. Any suggestions?
> 
> Am 18.09.18 um 19:44 schrieb Donald Tillman:
>> Hey folks,
>>
>> Since we've been talking about filters lately...
>>
>> There are several classes of active filters (state variable, gyrator, 
>> etc.), but one that's especially interesting is where you start with a 
>> passive RC filter, with poles on the real axis, and apply feedback, 
>> liberating the poles into the wonderment of the complex plane.
>>
>> Here's a Javascript simulation I wrote of exactly that:
>>
>>      Root Locus Demo of Real Poles with Feedback
>>      http://till.com/articles/poledance
>>
>> Have fun with it.  Tell me what you think.  Ask questions.  Explore.
>>
>>    -- Don
>> -- 
>> Donald Tillman, Palo Alto, California
>> http://www.till.com
>>
>>
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