Capacitor & inductor current waveforms not showing correctly

[SS61289]

Hello, 

After a fair amount of time playing around, I cannot seem to get the current waveforms of a purely capacitive / inductive circuit to show correctly on the oscilliscope.

since I through inductor =( ∫v  dt) / L

I get extremely high current values on the oscilliscope (in the region of kA) adn for a purely capacitive circuit - in the region of pA.

ie, a square wave DC source, 10V to -5V, 1ms @ 10V and 2ms @ -5V, period of 3ms - connected to a 1mH inductor.

(∫10 dt)/L = (10 x .001) / .001 = 10A - so at 1ms, the current will rise to 10A ( in a linear fashion)

[(∫10 dt) / L] from 0 to 1ms + [(∫-5 dt) / L] from 1ms to 3ms = 0 = current will drop to 0A in a linear fashion from 1ms to 3ms.

THIS does not show on the osciiscope!

By adding an instantaneous current probe onto the circuit - this will roughly show the correct value - but obviously will not show an accurate waveform.

Any help would be extremely appreciated.

Many thanks.

[James@NIUK]

Hello,

Thank you for your post. Would you be able to provide some more details of your set-up, what SW version are you using? It would also be extremely useful if you provide some example code and steps to reproduce the issue. 

Kind regards,

James

[SS61289]

Thanks for your reply,

I'm using 12.0.1 power pro edition

I literally just opened up the file to check it and to post it here, and it works?!

Rather confusing as it was most definately not working when I started this thread.

Maybe the program needed and clean startup or something.... but the current values were all over the place.

When I analysed the circuit by hand, I would get values for current and voltages but when simulated they were in the range of 500KA etc with a simple capacitor circuit with a 10V sawtooth supply.

Thanks anyway.

SS

[James@NIUK]

Thank you for your reply,

I am glad your up and running.

All the best,