fets and diodes

[Grant Richter]

The Chroma also used this for the phase shifter.
Basically make a ladder filter, but instead connect
the capacitor from emitter to collector of the same
transistor.

Juergen has a schematic up for it somewhere.

----------
> From: Harry Bissell <harrybissell at prodigy.net>
> To: Uros <urosuros at bits.net>
> Cc: synthDIY <synth-diy at node12b53.a2000.nl>
> Subject: Re: fets and diodes
> Date: Thursday, April 13, 2000 9:40 PM
> 
> Comment inline...
> 
> Uros wrote:
> 
> > Hi people ,
> > two questions : are some fet transistors more suited for using as
> > VCresistance than others , or it does not matter what fet is used ?
> 
> Some better, but don't know what parameter makes them better.
> 
> >
> > And second : is it possible to use diode ladder structure for phase
shifter
> > and has anybody done this ?
> 
> Yes and Yes... I think ARIES did it... you drive the top of the ladder
instead
> of the bottom (with out of phase drivers) then vary the collector
currents in
> the ladder, read out at the bottom of the ladder in the normal
fashion....
> 
> H^)
> 
> >
> >
> > Uros