JFETs and Moog Ladder Filters

[McIntosh, Malcolm]

>MC 
> It`s early in the morning, but I try to figure out, what a 
> JFET ladder would mean: .... <<SNIP>> 

Thanks for all the great info Martin, it will be very helpful!


>JH
....<<SNIP>>
>I'm tempted to say it's as hard as building a ladder filter with t*bes
(;->).
>I just don't see anything that corresponds to the exponential law of BJTs.
>(Unless you connect source and drain and use them as diodes ...)
<<SNIP>>....

Does that mean if someone figured out how to do it with JFET's they could
leverage off that "learning experience" and do it with tubes too? (twin
triodes come to mind here)    (:-o     (:-\     (:->

> How much are they ? Can't get enough of these if you want to select
> them for a certain threshold voltage, or use them as matched pair.
> Good BJTs are available in the 10 cents range, but it's hard to get
> JFETs for less than 30cents (at least from my sources).

They are from work, so I have to get the bean counters (accountants) to give
them up.  Everything is on list somewhere, and if they are going to throw
them away they have to account for that somehow.  So, if I can get them I
will.   : )


Malcolm