https://the-analog-thing.org/w/index.php?action=history&feed=atom&title=Summing_Junction 2026-11-07T22:18:21Z Revision history for this page on the wiki MediaWiki 1.43.8 https://the-analog-thing.org/w/index.php?title=Summing_Junction&diff=1015&oldid=prev 2024-12-29T19:54:35Z

<p>Created page on Summing Junction - To be expanded (Add feedback theory?)</p> <p><b>New page</b></p><div>The &#039;&#039;&#039;Summing Junction&#039;&#039;&#039;, labeled SJ, is the node on which the feedback path in an operational amplifier is closed on.<br /> <br /> Due to the [[feedback]] action in a properly configured op-amp, the currents at this point are equal and cancel out. This means that the input current through the input resistor and the feedback current through the feedback resistors are equal when the amplifier is working in the linear range, and their algebric sum is zero. Thanks to this, the SJ is also termed a &#039;&#039;&#039;Virtual Ground&#039;&#039;&#039; point.</div>

Marco-Guerini