[sdiy] RC filter questions + SPICE RC filter simulation questions

[Aaron Lanterman]

On Apr 16, 2010, at 4:40 PM, cheater cheater wrote:

> Aaron,
>> I worked out the transfer function of this sort of circuit a few years ago; it was a huge pain and took multiple pages. If I recall correctly, Tim Stichcombe did the same analysis, and fortunately my result matched his:
>> 
>> http://www.timstinchcombe.co.uk/synth/Moog_ladder_tf.pdf
>> 
>> See p. 34
> 
> Great answer - thanks! BTW, do you still have your own analysis up somewhere? It would be cool to have two sources comparison :-)

No, it's just messy set of handscrawling; it's not something I'd particularly want to post. Basically I ran through a series of making Thevenin equivalents, and then did a truckload of algebra.

- Aaron