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Hi all , How can i Check current at any node in this circuit ?

Hi <@U04RM105AD9>, the common way to do so is to put a voltage source of value 0 (Vx for example) and then just run the simulation and print or plot I(Vx)

In addition if you add the instruction `.option savecurrents` (before the .control section) all MOS drain/source/body currents are saved.
```.option savecurrents
.control
...
...
tran 0.1n 100n
remzerovec
write xxxx.raw
.endc```

there is no 'node current' concept. current is referred to a circuit branch. xschem has the `devices/ammeter.sym` symbol that is actually a 0V voltage source. Add these ammeters in any branch you want the current to be saved.

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If you use the `.option savecurrents` and after a .op simulation you go to `Simulation-&gt;Annotate operating point into schematic` and ensure `View-&gt;Show hidden texts` is enabled xschem willl show the MOS currents in the schematic directly:

<@U01819B63HP> How to check noise of this LDO circuit ?

I am not very expert on noise simulations, so may be some other sky130 user might answer, or you can try to go through the ngspice user manual.

<@U01819B63HP> hey stefan could you please tell me how to sweep line regulation and load regulation for LDO circuit