Node impedance measurement

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Fui

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Hi folks,

Is there anyone know, in the simulation testbench, how we can measure the impedance of the up/down network in a node, for instance, Z1 and Z2 as shown in the figure below?




Thanks,
Fui
 

Solution
You mean measure both impedances separately?
Generally it's quite simple, apply an AC voltage to the node, measure both branch currents separately. For Z2, you'll series connect a dummy resistor or zero voltage source to measure the current sum directly. Zx = V/Ix

If Pu drives the affected circuit also via other pathes, you need to disconnect left and right side of the node without changing bias.
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You mean measure both impedances separately?
Generally it's quite simple, apply an AC voltage to the node, measure both branch currents separately. For Z2, you'll series connect a dummy resistor or zero voltage source to measure the current sum directly. Zx = V/Ix

If Pu drives the affected circuit also via other pathes, you need to disconnect left and right side of the node without changing bias.
 

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