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LTspice: need to see currents when clicking nodes

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eti:
In “LTspice” once I’ve run a simulation and I click on the nodes, I can see the voltage of that node. Please, is there a simple way to do this for current too?

Thank you

RoGeorge:
LTspice will not show the current of a node.  It can only show the current flowing through a component in the circuit.

A node is a place where many wires are put in electrical contact together.  Each wire tied at the same node node will carry its own currentm they do not carry each the same current.  The currents from all the wires in a given node will sum zero (Kirchhoff's law).  So the current of a node, any node, is always zero, because of physics laws.

To probe the current through a specific wire, insert a voltage source of zero volts, and display the current through that 0V voltage source.

eti:

--- Quote from: RoGeorge on November 15, 2022, 07:01:47 am ---LTspice will not show the current of a node.  It can only show the current flowing through a component in the circuit.

A node is a place where many wires are put in electrical contact together.  Each wire tied at the same node node will carry its own currentm they do not carry each the same current.  The currents from all the wires in a given node will sum zero (Kirchhoff's law).  So the current of a node, any node, is always zero, because of physics laws.

To probe the current through a specific wire, insert a voltage source of zero volts, and display the current through that 0V voltage source.

--- End quote ---

 Thank you for your help, that’s what I actually meant, so how do I automatically show the current going through a component when I click it?

tooki:
Run the simulation. The mouse pointer changes to show a current arrow, then click on the component. Note that LTspice often draws the current arrow in the opposite direction of what you want. If that happens, and you need the current in the plot window to show the opposite way, you can edit the trace’s formula to add a minus sign in front of it.

If you want a simulation to display the voltages and currents on the schematic, I don’t think that’s something LTspice does. But other simulators, like Tina and Falstad, do.

RoGeorge:
Don't know what you mean by automatically display the current.  Post a capture of the schematic, and attach the .asc file together with the question(s).

First result when searching for "LTspice 101 youtube" was this:


It happens to show how to probe the current through a resistor.
Side note, never draw the GND touching the wire, like the dude in the video.

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