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

[Bob Weigel]

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

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
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