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<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff size=2>Hi
Ken</FONT></SPAN></DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff size=2>You
might check out this page for some thoughts:</FONT></SPAN></DIV>
<DIV><SPAN class=546174614-11102003><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=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2>Believe it or not this Linear Technology chip makes a great sample &
hold amp.</FONT></SPAN></DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff size=2><A
href="http://www.linear.com/prod/datasheet.html?datasheet=238">http://www.linear.com/prod/datasheet.html?datasheet=238</A></FONT></SPAN></DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2>Ray</FONT></SPAN></DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546174614-11102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE>
<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>Ken
MacBeth<BR><B>Sent:</B> Wednesday, October 08, 2003 2:33 AM<BR><B>To:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> [sdiy] Using LF398 for Keyboard
S&H<BR><BR></FONT></DIV>
<DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">
<P>Hi All! I just picked up a beautiful 5 octave dual contact bare
keyboard and would like to do a 'one off' keyboard controller. I've actually
done this before using the basic Prodigy circuit, but at time the hold over
time drooped a bit. It has occured to me to use an LF398 Sample and Hold
amplifier to do what the the fet and the jfet opamp seem to be doing in the
Prodigy keyboard circuit- any opinions/experiences/examples of doing this,
anyone?</P>
<P>Best regards,
Ken</P></BLOCKQUOTE></DIV><BR><BR>http://www.macbethstudiosystems.com<BR>Home
of the M3X Analogue synthesizer...
<P>
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