<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Apr 1, 2006, at 1:41 AM, ganesha wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">What kind of potmeter is used because it seems to have</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">a connection in the middle where you can connect the</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">square waveform?</FONT></P> </BLOCKQUOTE></DIV><DIV><BR class="khtml-block-placeholder"></DIV>It's kind of charming and quaint to see a 741 used in anything. For a minute, that chip was THE opamp. Now, it's like an Underwood manual typewriter. That is, it's noisy, slow, and not very sexy, but it's still solid and still gets the job done.<DIV><BR><DIV>That's a center-tapped pot. Very useful in synths, and unfortunately very hard to find.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I wonder why the pot is labeled as a type "FA". I will assume that the "F" must designate the center-tap, but "A"? A usually means audio taper, but I don't see how standard audio taper would be useful in this particular application (fading between three different sources) -- unless it somehow has audio taper up until the center tap, and then reverse audio taper pst the center tap. Am I missing something here?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV></DIV></BODY></HTML>