On Tue, Feb 4, 2025 at 11:06 PM, eewiz wrote:
Hello All:
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When no hierarchy is involved:
A resistor grounded on both ends is removed from the netlist hence, it shows no "plot my current" arrow when pointed at.
A resistor grounded on one end with the other end unconnected or connected to an open wire, is also removed from the netlist.
Neither resistor's current nor the open net's voltage can be plotted.
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I tried a simple flat schematic containing a voltage source, V1 and two resistors, R1, R2. (I'm using 24.0.12)
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If R2 is a resistor grounded on both ends, it remains in the net list, but is connected to 0 at both ends.
I(R2) cannot be plotted, and both ends of R2 report "This is ground".
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V1 VCC 0 1
R1 VCC 0 1
R2 0 0 1
.tran 1
.backanno
.end
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If R2 is a resistor grounded one end and open wire on the other, it remains in the net list, but is connected to 0 at one end and a unique net name on the other. I(R2) can be plotted, but it will be 0nA.
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V1 VCC 0 1
R1 VCC 0 1
R2 0 N001 1
.tran 1
.backanno
.end
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If R2 is a resistor grounded one end and open on the other, it remains in the net list, but is connected to 0 at one end, and a no-connection name "NC_01" on the other. I(R2) can be plotted, but it will be 0nA.
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V1 VCC 0 1
R1 VCC 0 1
R2 0 NC_01 1
.tran 1
.backanno
.end
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But it all cases, resistor R2 remains in the net list.
Can you provide a simple example that demonstrates why you to have to run the sim multiple times?
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