[sdiy] Tube Circuits - App notes ?

[May, Tony]

Take a look at www.tubecad.com. I remember them having some diagrams and
discussion about tube based crossovers and filters.

-----Original Message-----
From: Michael Buchstaller [mailto:buchi at takeonetech.de] 
Sent: Wednesday, July 17, 2002 9:55 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] Tube Circuits - App notes ?

Hello friends,

from semiconductor manufacturers i know that there are plenty of
application
notes that show how to use e.g. Opamps for everything one could imagine.

But i am looking to find something similar for tubes. All schematics i
see are audio
or RF amplifiers, guitar amps etc. But how do i make basic circuits (for
a synth or
analog computer) like comparators, logic gates, oscillators, filters,
etc. ?

Can anybody suggest a book or online resource ?



-Michael Buchstaller