[sdiy]Is it a dual square transistor ? ;)

[m.bareille at free.fr]

Thank you for your helpful answer and link !

 I think you are right, it look like a symetrical RLC network, builded with this
technology  for accuracy and stability and to filter the audio transformer
/preamp stage...Just i am surprised to find this advanced technology into an
early 70's gear/part !

The mixer circuit is much more locical to understand viewed like this, for sure!
:)

Thanks,

Marc B.





Selon Simon Brouwer <simon.oo.o at xs4all.nl>:

> Looks like a simple filtering or equalizing circuit made in thick film
> technology.
>
> See e.g. http://lpm.epfl.ch/page61782.html#thickfilms
>
>
> m.bareille at free.fr schreef:
> > Hello,
> >
> > I have recently grabbed this part into a 40 or 50 years old
> > special/strange
> > mixing desk  from the ORTF (the french BBC). This part have 6 legs and a
> > square
> > shape , tagged CM241 made by RTC/SIS (?) and was  used by 2 into each
> > tracks of
> > this mixer in combination with tiny Schlumberger (audio) transformers...
> >
> > I have opened  one and here is a picture of what i found inside of the box
> > ...
> >>From your opinion , what is it ? I have not yet tested it with the
> > multimeter/diode checker, neither have schematics of this mixer or modules
> > ..
> >
> > The picture is on my web site here: http://m.bareille.free.fr/CM241.JPG
> >
> > Thanks,
> >
> > Marc B.
> >
> >
> >
> >
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> >
> >
>
>
> --
> Vriendelijke groet,
>
> Simon Brouwer
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