
Nonlinear capacitor consist of metal plates isolated by nonlinear dielectric.
Analysis Type:
An axisymmetric problem of Transient electric field.
Geometry:
Given:
Relative permittivity dielectric  nonlinear.
Voltage U_{0} = 0.. 240 V.
Problem:
Calculate C(U) curve.
Solution:
To calculate C(U) curve we should make a set of experiments: change the voltage and measure the charge q. The capacitance is C = q / U.
To automate the task lets apply the timedependent voltage u(t) = U_{max}*t, where t  is time. Thus we replace the series of problems with one timedependent problem. After the problem is solved QuickField can calculate q(t) automatically.
Results:
Measured u(t) and q(t).
Calculated nonlinear capacitor characteristics C(U), q(U).
See the Telec1.pbm problem in the Examples folder.