diode capacitance (was:Re: [sdiy] Doepfer Schematics)

jh. jhaible at t-online.de
Mon May 7 21:42:06 CEST 2001


> [Czech Martin]  I may be wrong, but did anybody consider diffusion
> capacitance of the ladder junctions? I mean they are forward biased
> and show as a complex impedeance. Both, real and imag part depend
> on frequency. I did no simulations or calculations, but perhaps a
> few additional zeros and poles will show up, maybe at a too high
> frequency...

This is interesting. Must check if these caps just introduce an extra
attenuation (with the shunt caps of the ladder), or if there are zeroes
introduced. Most probably out of the "interesting" range.

JH.





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