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- From: wtm@uhura.neoucom.edu (Bill Mayhew)
- Subject: Re: Nuvistor audio amplifier schematic
- Message-ID: <1992Dec15.020929.3869@uhura.neoucom.edu>
- Organization: Northeastern Ohio Universities College of Medicine
- References: <9212110244.AA01269@netcom.netcom.com> <Bz7ovv.FA9@wang.com> <1gi91jINNdbe@rave.larc.nasa.gov>
- Date: Tue, 15 Dec 1992 02:09:29 GMT
- Lines: 23
-
- A good tutorial example for working with 6CW4 Nuvistors is an old
- Tektronix Type W plug-in module. That is a high gain diff amp for
- DC to low MHz. I have one that dates from about 1965 or so. The
- input stage is a pair of 6CW4s that are mounted in a block of
- aluminum to apparently equalize temperature. The assembly is
- cleverly shock mounted to help isolate vibration - of which there
- is plenty in old 5xx series scopes from the big fan(s), for
- instance. The vertical output is transistorized, so there are some
- good lessons there on interfacing -- note the unit is DC coupled
- down to 1 mV/cm, though there is a quite necessary DC balance pot
- on the front panel. Finding a Type W manual at a hamfest might
- provide some interesting reading for esrtwhile tube hackers.
- Actually, a type W itself ought to be cheap and would provide the
- nice mounting bracket which could be used for other projects.
-
- It is so much easier to work with solid state components that I
- doubt I'd bother starting any new projects with tubes.
-
-
- --
- Bill Mayhew NEOUCOM Computer Services Department
- Rootstown, OH 44272-9995 USA phone: 216-325-2511
- wtm@uhura.neoucom.edu (140.220.1.1) 146.580: N8WED
-