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<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2>Steve,</FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff size=2>Try
here,</FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff size=2><A
href="http://www.intersil.com/products/deviceinfo.asp?pn=ICM7216B">http://www.intersil.com/products/deviceinfo.asp?pn=ICM7216B</A></FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff size=2>I have
a Universal Counter built from this that i use often.</FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2>regards,</FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2>p</FONT></SPAN></DIV>
<DIV><SPAN class=710582418-27062004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=710582418-27062004></SPAN> </DIV>
<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>Steve
Allen<BR><B>Sent:</B> Sunday, June 27, 2004 9:25 AM<BR><B>To:</B>
music.maker@gte.net; synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> Re: [sdiy]
frequency counter<BR><BR></FONT></DIV>
<DIV>Hi All,</DIV>
<DIV> Anyone remember the ICL7216DIPI, that is a frequency counter on a
chip?</DIV>
<DIV>Anybody know where a schematic/data sheet for this critter might
be?</DIV>
<DIV> </DIV>
<DIV> Thanks,</DIV>
<DIV> Steve<BR><BR><B><I>Scott Gravenhorst
<music.maker@gte.net></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">WeAreAs1@aol.com
wrote:<BR>><BR>>In a message dated 6/26/04 10:19:02 PM,
music.maker@gte.net writes:<BR>><BR>><< There are circuits that
can divide by numbers other than powers of 2. I<BR>>figured out a circuit
for a symmetrical output divide by 3. >><BR>><BR>>By "symmetrical
output", do you mean square wave input > square wave output? <BR>>Does
it work with any frequency, or are there frequency selective components
<BR>>involved? It sounds like this could be a good alternative to the
typical <BR>>octave divider circuit. What pitch interval does it make? (I'm
hoping that it's <BR>>a perfect 4th or 5th, and not the dreaded
tritone)<BR><BR>It is a perfect 5th (or 4th depending on how you look at it).
And it is<BR>symmetrical as in 50% duty cycle or square wave. I used it as
part of a divider<BR>chain in a PLL frequency
multiplier.<BR><BR>http://home1.gte.net/res0658s/fatman/4046pll.html
<BR><BR>It has 7 outputs at 1F, 1.5F, 2F, 3F, 4F, 6F and 12F. All are square
wave outputs.<BR>1.5F, 3F, 6F and 12F all have perfect 5th relationships back
to the fundamental. <BR>This is very useful, IMHO. The divide by 3 circuit can
indeed be used as a<BR>subharmonic without going the frequency multiplier
route and it still has the<BR>perfect fifth
relationship.<BR><BR>><BR>>Mike
B.<BR>><BR><BR>---------------------------------------------------------<BR>-
Where merit is not rewarded, excellence fades.<BR>- Hydrogen is pointless
without solar.<BR>- What good are laws that only lawyers understand?<BR>- The
media's credibility should always be questioned.<BR>- The only good terrorist
is a dead terrorist.<BR>- Governments do nothing well, save collect
taxes.<BR><BR>-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5<BR>--
Linux Rex | RedWebMail by RedStarWare<BR>-- FatMan:
home1.gte.net/res0658s/FatMan/<BR>-- NonFatMan:
home1.gte.net/res0658s/electronics/<BR>-- Autodidactic Master of Arcane and
Hidden Knowledge.<BR><BR></BLOCKQUOTE>
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