[sdiy] Temperature Compensated Exponential Converter Using SSM2164

[HOSHUYAMA]

Hello Neil and Ian,

Thank you very much for the information.
I understand that I rediscovered Roman's idea.
(I should have seen the schematic in 1999, although I can't remember.)

Sam HOSHUYAMA
Saitama, JAPAN


Neil Johnson wrote:
> Hi,
> 
> Ian Fritz wrote:
> > At 11:32 AM 8/31/2009, David G. Dixon wrote:
> >> > As is mentioned in Roman's site, SSM2164 itself is not so sensitive
> >> > to temperature.  It may have heating function.
> >>
> >> I seriously doubt that!  It simply has a gain temperature constant of
> >> 3300ppm/K, either by design or by accident.
> >
> > Again the circuit I'm refering to is *not* on Roman's website.  He  
> > posted it to this list in 1999.  It is almost identical to Houshu's  
> > design.  Component values are different, that's all!
> 
> For those unable to search the online synth-diy archives at
> 
> 
> http://search.retrosynth.com/synth-diy/index.html
> 
> (search for "roman sowa ssm2164")
> 
> I have pulled up the relevant email and decoded the GIF file.  Here  
> is the full version online:
> 
> 
> http://www.njohnson.co.uk/misc/0drift.html
> 
> Cheers,
> Neil
> --
> 
> http://www.njohnson.co.uk
> 
> 
> 
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