[sdiy] Re: 4049 and 4069

[Peter Snow]

Hi Darren,

> (can't wait for my sockets to arrive, so I can finish up the midi->cv converter)

Which one are you building?

Regards,

Peter


Shokwave wrote:
> 
> ----- Original Message -----
> From: "Czech Martin" <Martin.Czech at micronas.com>
> 
> > In fact, CMOS logic gates can be used as noise
> > source (linear, not time discrete shift registers).
> > You can see them on my web site.
> > http://www.geocities.com/SoHo/Museum/4459/circuits/cmosnoise.html
> 
> Cool!
> 
> > JFETs behave a little better, since no oxide
> > isolation. The basic Id/Ug characteristic is similar,
> > so why not building a distortion element with JFETs?
> 
> In fact, that's how I got here; I was looking at Jack Orman-inspired J201
> distortion circuits, and playing around with them in Spice. I'm going to
> play with J201's, 2N5484's, 4049's and 4069's in similar circuits to Jack's
> miniboosters, and probably drive them with an opamp pre-gain stage to get
> them into the interesting parts of the curve. first, for guitar, but then as
> part of the more general modular synth I'm starting on (can't wait for my
> sockets to arrive, so I can finish up the midi->cv converter). CV-controlled
> distortion, driven by an ADSR-style envelope, could be very interesting.
> 
> -Darren