<div dir="auto">It's just the (internal tikzpicture) coordinates of the center of the op amp node. Giving that all the other coordinates are relative to that, and that the resulting TeX box is built with the bounding box of the resulting image, the net external effect is none.<div dir="auto"><br><div dir="auto">Romano</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 12 Apr 2023, 22:49 Philip Taylor (Hellenic Institute), <<a href="mailto:P.Taylor@hellenic-institute.uk">P.Taylor@hellenic-institute.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>On 12/04/2023 21:29, Romano Giannetti
wrote:<br>
</div>
<blockquote type="cite">\begin{circuitikz}
<br>
\draw
<br>
(1.5,-.5) node [op amp] (opamp) {}
<br>
(opamp.-) ++(-0.5, 0) node[left]{A}
<br>
to [short] (opamp.-) ;
<br>
\end{circuitikz}
</blockquote>
<p>What does the initial (1.5,.5) do, Romano ? I can see no visible
difference if I change one or both to zero or 10.</p>
<p>-- <br>
<i>Philip Taylor</i><br>
</p>
</div>
</blockquote></div>