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<DIV><SPAN class=125095223-18102003><FONT face=Arial color=#0000ff size=2>Here
are some ideas and info about the side to put the current source to. I agree
with Harry and the design I show has the current source feeding the top of the
keyboard.</FONT></SPAN></DIV>
<DIV><SPAN class=125095223-18102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=125095223-18102003><FONT face=Arial color=#0000ff size=2><A
href="http://atlas.csd.net/~rjwsoft/keybrdcontroller.html">http://atlas.csd.net/~rjwsoft/keybrdcontroller.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=125095223-18102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=125095223-18102003><FONT face=Arial color=#0000ff
size=2>Ray</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
owner-synth-diy@dropmix.xs4all.nl
[mailto:owner-synth-diy@dropmix.xs4all.nl]<B>On Behalf Of </B>Thomas
Holley<BR><B>Sent:</B> Saturday, October 18, 2003 11:23 AM<BR><B>To:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> [sdiy] Keyboard
Control<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2> I have a rather fundamental
question. In a keyboard controller resistor ladder, does the high voltage side
go to high pitch key or the low pitch key. I have been tinkering with an old
keyboard and soldered up a 100 ohm resistor between each key for a
nice ladder when it finally dawned on me that I had not a clue which side to
put the current source on and which one to ground. Thanks for your
help</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thomas</FONT></DIV></BLOCKQUOTE></BODY></HTML>