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<DIV><FONT color=#000000 size=2>Roman Sowa wrote:</FONT></DIV>
<DIV><FONT size=2>></FONT></DIV>
<DIV>>Hi all!<BR><BR>>Why do always simple tasks are done the hard
way?<BR>>What would you say about 2 opamps, 2 resistors and 1 diode
design?<BR>>And very old one too...<BR><BR>>imagine standard inverting
amplifier with gain = -1.<BR>>insert diode between opamp's output and
feedback resistor.<BR>>anode toward opamp if you want positive output, or
cathode otherwise.<BR>>use second opamp as a follower connected to the
diode-resistor node.<BR>>voila!<BR><BR>>Roman </DIV>
<DIV> </DIV>
<DIV><FONT size=2>Hi again!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>There is no problem in being simple. Many other designs are
simple but they all suffer from rounded peak of the triangle. This drove me
crazy so I didn't wanna simple anymore. Btw: Whats 2 or 3 resistors more in a
circuit? They are ultra cheap anyway and the take almost no space (you can
always use SMT resistors, if the space is a problem).</FONT></DIV>
<DIV><FONT size=2></FONT><BR> </DIV>
<DIV><FONT color=#000000 size=2>Tadej Bozicko<BR>E-Mail : <A
href="mailto:tadej.bozicko@uni-mb.si">tadej.bozicko@uni-mb.si</A><BR>WWW :
<A
href="http://imola.uni-mb.si/~bozicko">http://imola.uni-mb.si/~bozicko</A><BR>WWW2:
<A
href="http://www.uni-mb.si/~uelelt68b">http://www.uni-mb.si/~uelelt68b</A><BR></FONT> </DIV></BODY></HTML>