Hi.
I set up this circuit for simulation Cgs and Cgs as Vgs changes.
![](http://www.designers-guide.org/Forum/Attachments/Cgs_and_Cgs_simulation_schematic.png)
Below are the curves Cgs and Cgs vs Vgs.
(please see it in the second post. The forum doesn't allow to post two images in a single post)
I have some questions, hope you can help.
1. Why Cgs and Cgs are negative?
2. Why Cgs and Csg are not equal?
Thanks.