Old artical on making Si sound Ge? for piggy?

[Leftrights]

A couple of years ago, I remember seeing an artical somewhere (maybe GEO?) about making Si trannys sound more like Ge.  

The gist of it, as far as I can remember, was that part of the Ge tone came from an internal parasitic capitance that came with the transitor.  The artical said that you could mimic that with a small cap strung from base to emmiter (or base to collecter???), and that made it sound more like a germanium tranny.

As you can see, I can't remember much but the fact that the artical existed. :oops:   But I was thinking that if anyone had a better memory than me or knew where the artical was, it might make a nice mod for the  "Miss Piggy".

[nightingale]

might have been www.muzique.com~
check the lab notebook for the YAFF circuit... he touches on the subject... as far as the YAFF circuit goes... i will totally back that circuit: i really like it alot... absolutely my favorite fuzz circuit... also very good with 2N4401's in my expeirments...
hth,

[Peter Snowberg]

I think I've seen both base-emitter and base-collector caps :?. The other method being the addition of another base-emitter junction.

I think it's so subjective a task that pinning down the parts to add may not be all that easy.

You may want to look at this link for some background on Ge transistors.

http://www.diystompboxes.com/sboxforum/viewtopic.php?t=17022

-Peter

[Paul Perry (Frostwave)]

Speaking more as a philosoplher than an EE (and I'm neither..) it occurs to me that the output of a transistor stage depends on something happening inside the transistor, plus the load. Now we can't do anythig to the inside of a Si to make it a Ge, but perhaps we can do something to the load? Maybe a nonlinear load?