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From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
09-04-2019 02:57 AM
Peace upon you !
Yesterday when i was working on multisim,Studying the behaviour of capacitors in different combinations, I found a very abnormal behaviour of multisim.The software can't distributes the voltages correctly across the capacitors in series in a loop. We can say there is a Bug in the software....
I wondered the simulation shows zero voltage across the capacitor connected in series when the voltage source is connected to the ends of the combination.
As you know guys :
Voltage distributes across the capacitors in series.
https://courses.lumenlearning.com/physics/chapter/19-6-capacitors-in-series-and-parallel/
What I Done :
Placed three capacitors of same capacitances in series on a board.
Applied 12V across the capacitors.
Put the oscilloscope on each ends of capacitors and measured the voltages.
What I found:
The voltage across the C1 : 6V
The voltage across the C2 : 0V
The voltage across the C3 : 6V
Then I used The ground ( I thought that the error may because of not placing the ground )
But it remains the same...................................
How could it possible that there is no voltage drop across the capacitors.................xD
Azher Ali Khan
azherkhan@engineer.com
09-05-2019 01:53 PM
I'm not sure, but maybe it happened, because the model of capacitors is configured some different way and program recognize it like you cut the line when putting capacitors like this in DC mode. Try this on AC mode or try to implement your model.
09-05-2019 01:57 PM
But it's working when I do transient analysis.
Yes Also working on AC supply.
Buy not working with DC
09-05-2019 02:07 PM
If you can send the screenshot of transient analysis.
04-29-2021 01:23 PM
I recommend these Multisim settings:
1. Simulation settings -> Initial conditions -> User defined
2. Capacitor: check the selection box IC = 0V
This worked well for me.
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(Experiments with series connected capacitors)