[sdiy] uA729? Trying to read poor quality 100F Kawai unit's schematic

[Pete Swarbrick]

According to datasheet archive uA729 = MC1305 = ULN2122 = stereo
multiplex decoder ! Probably not much use as a matched pair, even with
that famous Japanese ingenuity ;<))
 FWIW I am also pretty sure I had to replace a uA726 in one of these
synths in the distant past.
Pete

Peter Swarbrick
Head of Digital Imaging
Panavision Europe
Greenford UB6 8GD
UK
+44 208 839 7338
+44 7958 597777
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-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Bob Weigel
Sent: 06 February 2007 04:10
To: synthdiy
Subject: [sdiy] uA729? Trying to read poor quality 100F Kawai unit's
schematic

I'm doing a table for my website finally.  I'm putting in every major 
production synth and a note on every major facility (vca, vcf, eg etc.) 
and putting 'digital' usually if that's the case though I may get more 
specific on some of those..but mainly I want it to allow people, in a 
glance, to see which features are analog and which components are shared

w/other synths. In reviewing the 100F diagram I have I absolutely can't 
believe it says uA726 on this transistor pair which is what they used in

the 100P.  I dont' get any google hits for a uA729HC which it appears to

say except for icelect and they probably list numbers that never even 
existed. :-). Is anyone familiar with that number?  it...almost rings a 
bell from fairchild days long gone past :-) -Bob 
 
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