[sdiy] LM394 vs. MAT02 vs. ?

[Jay Schwichtenberg]

Might check the Moog circuit before you build it. I think the PNP circuit is
missing a 10K resistor between the current source collector and the DUT
(Device Under Test) emitter. Look at the NPN side to see what I mean.

Anyone know for sure?

Jay S.

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Metrophage
> Sent: Friday, November 05, 2004 7:51 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] LM394 vs. MAT02 vs. ?
>
>
> Well, until I get a decent meter, I'll need to get pre-matched
> transistors. That is the simplest matching measurement circuit I have
> seen! A clean power supply is crucial, as well as an accurate meter.
>
> There is also the super-elaborate tester from the Moog modular manual-
> < http://freespace.virgin.net/dragon.servicing/circuit/moog53.gif >
> CJ
>
>
>
>
> --- James Patchell <patchell at cox.net> wrote:
>
> > http://www.oldcrows.net/%7Epatchell/matcher/matcher.html
> >
> > I then glue the two parts together with 5 minute epoxy.
> >
> >
> > At 10:00 AM 11/4/2004 -0500, Colin Hinz wrote:
> > >On Wed, 3 Nov 2004, James Patchell wrote:
> > >
> > > > And if you want to be real cheap, try hand matching a pair of
> > > > 2n3904's...they work fair well (you must glue them together to
> > make them
> > > > work)....
> > >
> > >How does one do this?
> > >
> > >- Colin Hinz
> > >   Toronto, Canada
> >
> >          -Jim
> > ***************************************************************
> > http://www.oldcrows.net/~patchell
> >
> > ***************************************************************
> >
> >
> >
>
>
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