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<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=465262314-12072004>hi
fernando,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=465262314-12072004>thanks
for the links! the logistic function circuit looks like lots of
fun.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=465262314-12072004>re.
the multipliers, i've looked at the data sheets and it looks like the MPY634 is
more precise and has a wider bandwidth, but for music purposes (even into audio
frequencies) the AD633 should be fine... i'm by no means an expert though,
so anyone please correct me if i'm wrong. i'll post some results if/when it's up
and running. i can't quite justify spending £60 for two ICs, for that much i
could add a 'proper' module to my synth... i suppose you can tell i've only
been on this list for 24 hours? ;)</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004>thom</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=465262314-12072004></SPAN></FONT> </DIV>
<DIV></DIV>
<DIV><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
Fernando de Izuzquiza [mailto:fdi@ran.es] <BR><B>Sent:</B> 12 July 2004
12:01<BR><B>To:</B> thom.ash@dsl.pipex.com<BR><B>Cc:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> Re: [sdiy] analogue
multipliers?<BR><BR></DIV></FONT>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">Hi Thom,<BR><BR>RS (UK) have both the
AD633 and the more expensive MPY634.<BR>I was thinking in building that
circuit too and wondering if it akes any difference (MPY634 or AD633)
...<BR><BR>Fernando<?fontfamily><?param Geneva><BR><BR>> De: "Thom Ash"
<thom.ash@dsl.pipex.com><BR>> Fecha: Sun, 11 Jul 2004 13:04:26
+0100<BR>> Para: <synth-diy@dropmix.xs4all.nl><BR>> Asunto: [sdiy]
analogue multipliers?<BR>> <BR>>
http://frank.harvard.edu/~paulh/misc/lorenz.htm<BR>> <BR>> i thought
this might make quite a tasty LFO...<BR>> <BR>> i'm having a spot of
bother getting hold of the analogue multipliers<BR>> though, anyone know
where i can pick up some AD633s (or any other cheap<BR>> four quadrant
multipliers) in the UK? cheers!<BR>> <BR>> thom [from AH]<BR>>
<BR>> <BR></BLOCKQUOTE><?/fontfamily></BODY></HTML>