Theory for Korg35 (Re: [sdiy] Multi-Input filters)

[Osamu (Sam) HOSHUYAMA]

Hello JH and List,

I understand Mr. Tanaka explains basically based on Ebers-Moll model of 
bipolar transistors.

In a saturated transistor, normal transistor and inverted transistor 
(C and E are reversed) work simultaneously.  The CB junction is forward 
biased, which works as a variable dynamic resistance like the EB
junction 
with ordinary ladder filters.

I think you couldn't understand my odd English, however, you can 
understand by yourself.  The descriptions of pp.1--9 and pp.22--24 in 
the following course notes would be helpful. (Quite big file)

 
http://www.rpi.edu/~schubert/Courses/ECSE-6290%20SDM-2/1%20BJT-3%202nd%20order%20effects.pdf

Other course notes on the site also look very useful for us.

  http://www.rpi.edu/~schubert/Courses/ECSE-6290%20SDM-2/

Best regards,

Sam Hoshuyama
-- - ---  - -- ------ - -------- -- - ---- -
Osamu (Sam) HOSHUYAMA      houshu at rogers.com
                              Ottawa, CANADA
--------------------------------------------