Question about using Ohms law to calculations with LTspice

Thread Starter

anishkgt

Joined Mar 21, 2017
529
Hey all,

I am trying to find the resistance of a unknown resistor with know current and voltage using ohms law. based on the result attached is there a match function to simply do this
Ohms = 0.0034/1700
which is voltage from V(adc)/set current 1700.
Annotation 2020-07-25 224105.png
 

Thread Starter

anishkgt

Joined Mar 21, 2017
529
Its a spot welder project used to spot weld 18650 cells with nickel strips. That is the voltage drop at the nickel strip, with which the resistance is calculated using Ohm's law
R=V/I
=0.0034/1700 = 0.000002Ohms or 0.002mOhms
 

crutschow

Joined Mar 14, 2008
25,264
Plot V(ADC) by clicking on that node after a simulation run.
Right click on the V(ADC) title in the plot.
Change the expression to V(adc)/I(Rx) where Rx is the resistor carrying the current.
 

Thread Starter

anishkgt

Joined Mar 21, 2017
529
Since i did not get to make electronics as my day job its is a hobby, hence i find it hard to. But recently i am getting used to it.
 
Top