[sdiy] anyone know what this chip is? M334 7161

[Roy J. Tellason]

On Thursday 16 April 2009 06:10:26 am Bob Weigel wrote:
> Yeah looks like a typical spider divider to me.  Many organs use those
> and I possibly even have that exact chip in an old scrap piece of test
> equipment.  It looks awful familiar :-) -Bob

After I wrote my initial response to that post numbers came to mind,  like 
MFC6020, 6040,  etc.

Do you know of any sources for these things these days?  Or are they pretty 
much unobtainium any more...?

> Loscha wrote:
> >Afternoon Ladies and Gentlemens.
> >
> >Please consider the following images:
> >  http://www.loscha.com/images/M334-7161.jpg  155k
> >  http://www.loscha.com/images/M334-7161_small.jpg  20k
> >
> >
> >There are two of these in a thing called an Orgatron (GTR orgatron 2,
> >from the late 60s-ish, an electronic thing, not the electroacoustic
> >reed organ thingy).
> >
> >It was posted about when I first got it on Matrixsynth. Apparantly my
> >kid sister is a "Synth Babe". That page it links to is 404, by the
> >way, I don't think I have the sample up online anymore. It sounded
> >quite crap. A mono square osciallator with a few switched cap static
> >filters as "stops".
> >http://matrixsynth.blogspot.com/2006/11/gtr-orgatron.html
> >
> > Has anyone seen this part before? The unit has some stops that are
> >octave down, so, thinking it may be a divider. Seems like an "organy"
> >type chip, I recall seeing something similar in a Crumar organ/piano I
> >had 10 years ago.
> >
> >Any assistance would be appreciated. Hoping, honestly, that they'll be
> >able to be given to someone to repair something worth while, instead
> >of this piece of crap I junked & dumped today!!!!!
> >
> >They are both connected up in a similar fashion.
> >Short pin next to trace (the lump) always goes to earth.
> >Long pin not on bump end goes to +ve
> >They are situated in the section of the circuit which is a volume
> >control. Possibly some kind of VCA or amplifying transistor.
> >
> >It's not in my little "cubic" Tech/Eca Asia Pacigic "Up-To-Date
> >World's Transistors-Diodes-Thyristors & ICs Comparison Tables". (the
> >Jaycar ones, about 10 years old).
> >I'm stumped. Am not even sure what package to call it.
> >
> > Thanks for your time if you bothered to read my rambling all the same!
> >
> >-ErJ
> >_______________________________________________
> >Synth-diy mailing list
> >Synth-diy at dropmix.xs4all.nl
> >http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy



-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin