[sdiy] Hollow low-pressure ladder filter

[John L Marshall]

I can't help. I don't have a table of New World to Old World equivalents.
The 12U7 is a 12 volt B supply exuivalent of the 12AU7 sort of.

Take care,
John

----- Original Message -----
From: Theo <t.hogers at home.nl>
To: John L Marshall <john.l.marshall at gte.net>; Tim Ressel
<madhun2001 at yahoo.com>; <epeasant at telusplanet.net>; Synth-Diy
<synth-diy at dropmix.xs4all.nl>; René Schmitz <uzs159 at uni-bonn.de>
Sent: Monday, April 29, 2002 4:32 AM
Subject: Re: [sdiy] Hollow low-pressure ladder filter


> Is 12U7 the same as the ECC86?
>
> Theo
>
>
> From: John L Marshall <john.l.marshall at gte.net>
>
> > 12U7s were designed for car radios, 12 volt plate supply, 30 volts
> maximum.
> >
> > Take care,
> > John
> >
> >
> > ----- Original Message -----
> > From: René Schmitz <uzs159 at uni-bonn.de>
> > To: Tim Ressel <madhun2001 at yahoo.com>; <epeasant at telusplanet.net>;
> Synth-Diy
> > <synth-diy at dropmix.xs4all.nl>
> > Sent: Sunday, April 28, 2002 4:46 PM
> > Subject: Re: [sdiy] Hollow low-pressure ladder filter
> >
> >
> > > Hi Tim et al,
> > >
> > > At 15:37 28.04.02 -0700, Tim Ressel wrote:
> > > >According to the data sheet curves, at the low
> > > >currents I am using the voltage drop will be less than
> > > >2 volts. I am wiring up the chain right now, so I will
> > > >find out first hand what the drops are.
> > >
> > > Sounds reasonable, since these were used as small signal
> > > rectifiers.
> > >
> > > >> When you get the ladder working, you should then try
> > > >> to replace the rest of
> > > >> the solid state parts in the signal path with tubes.
> > > >
> > > >I have thought of that. It is a possibly.
> > >
> > > Would be difficult to run on 15V I'd guess.
> > >
> > > Cheers,
> > >  René
> > >
> > >
> > > --
> > > uzs159 at uni-bonn.de
> > > http://www.uni-bonn.de/~uzs159
> > >
> > >
> > >
> >
>