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# Re: [FEMM] Circuit Prop not showing voltage/impedance?

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- Subject: Re: [FEMM] Circuit Prop not showing voltage/impedance?
- From: David Meeker <dmeeker@ieee.org>
- Date: Tue, 03 Feb 2004 10:58:03 -0500
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`Scott Diehl wrote:`

> `*Has anyone had trouble with the Circuit Prop feature not reporting the voltage gradient or impedance?
> *`

`
I've changed the things that the "Circuit Props" menu selection reports in the 4.0 development version. The program now sort of reports as much as it can, given the situation. In every case, it will report:
Total current , Voltage Drop, Flux Linkage
If the current is nonzero, it will report Flux/Current (which can usually be interpreted as inductance), and Voltage/Current (which can usually be interpreted as impedance).
If the analysis frequency is 0 Hz, the program will report resistive power loss in watts. If the analysis is AC, the program will report real, reactive, and total apparent power.`
`I've also changed the way that the mo_get_circuit_properties command works in the latest 4.0 development version as compared to previous versions. However, but it looks like I forgot to update the documentation for it--whoops. I'll make sure to have the revised documentation in the next development update. The routine now returns six values:`

     Real part of the current;
     Imaginary part of the current;
     Real part of the voltage drop;
     Imaginary part of the voltage drop;
     Real part of the flux linkage;
     Imaginary part of the flux linkage;

`There were some bugs in the circuit property values reported in previous development versions of 4.0, mostly associated with the "series circuit properties" that have been relatively recently implemented. Hopefully, they've all been caught in the 26Jan04 Development Version.`

> `* When I select this option, the only things I get are total current and current density. Incidentally, my Problem Info feature doesn't display anything at all.*
> **`

`
The "Problem Info" just re-displays the initial info in the floating "FEMM Output" window, e.g. information like:`

     Title: design1.ans
     Length Units: Millimeters
     Axisymmetric Solution
     Frequency: 0 Hz

     16063 Nodes
     31659 Elements

`
Dave.`

- References:
  - [FEMM] Circuit Prop not showing voltage/impedance?
    - From: Scott Diehl <Scott.Diehl@eminence.com>

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