Re: gEDA-user: Phase and Magnitude of Current

[Stuart Brorson <sdb@xxxxxxxxxx>]

> I have this assignment for a circuit analysis class. We're supposed
>to use pspice, but I'm having a couple of problems using the
>software. 
>
> We're supposed to find the magnitude and phase of I, I_C, and
>I_L. So I loaded up my netlist into ngspice, and I performed a
>transient analysis with a step size of 5 ns and a duration of 200 ns: 
>
> ngspice -> tran 5ns 200ns
>
> It gave me the voltage, which is good and all, but how do I get the
>magnitude and phase of the current without doing it by hand
>(i.e. only using ngspice)? Attached is a picture of the schematic (if
>that's necessary).

Look at section 5.1 of this online document:

http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/sec5.html

then try something like

print mag(myVoltage)



Stuart


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