[sdiy] Ladder filter pole

[Tim Ressel]

It occurs to me that the diodes/transistors in the
ladder are acting as current-variable resistors. I
don't know enough about tubes to know if they would
work in that mode. I know fets kinda work like that.

Hmmm ... time for Group Brain Mode!!

--TR

--- epeasant at telusplanet.net wrote:
> I was hoping that somebody would design one with
> tubes, but it might need more
> than 300V. Diode tubes ought to work OK, though, and
> 6AL5's (dual diode) are
> cheap and plentiful. If I ever get time I may take a
> stab at it; has anybody
> ever attempted it with FETs?
> 
> Take care,
> Doug
> 
> ______________________
> The Electronic Peasant
> 
> www.electronicpeasant.com
> 
> >Gene et al,
> >
> >I can't help but wonder if one could build a ladder
> >filter out of tubes? I think it'd take a +/- 300V
> >power supply to put that many tubes in a stack. Or
> >would one use diode tubes in the middle?
> >
> >Hmmm....
> >
> >--TR
> >
> >--- Gene Stopp <gene at ixiacom.com> wrote:
> >> One thing that bugs me about CEM-based poly
> machines
> >> is that they sometimes
> >> sound "too perfect", almost to the point of
> sounding
> >> actually thin.
> >
> >
> >__________________________________________________
> >Do You Yahoo!?
> >Yahoo! Tax Center - online filing with TurboTax
> >http://taxes.yahoo.com/
> >


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