multisim ac analysis for simple resonant circuit gives wrong answer

[__SAW__]

Hello,

I tried to run a simulation of the attached simple tank circuit and the multisim results are wrong (don't match hand calculations or microcap simulation results). I tried experimenting with simulation settings with no effect. Can you help me resolve?

-Steve

[Tien_P]

Hi Steve,

Run attached circuit, I was able to similar results as Microcap.  This screen shot shows the AC setup I used just in case you are not running Multisim 13.

[__SAW__]

Hello,

I discovered last night that if I turn on tolerance's, and set the tolerance on the components to zero, then the AC analysis gave the right answer. But, I then turned off tolerance's, and it STILL gave the correct answer. So the bottom line is I lost the conditions that caused the simulator to fail.

-Steve

p.s. I am running version 11

[Tien_P]

The tolerance doesn't affect the AC simulation. My guess is there is likely a wiring problem, but it's hard to say without looking problem file.