Contains m variable capacitors (Modelica.Electrical.Analog.Basic.VariableCapacitor)
It is required that each C_Port.signal ≥ 0, otherwise an
assertion is raised. To avoid a variable index system,
C = Cmin, if 0 ≤ C_Port.signal < Cmin, where Cmin is a parameter
with default value Modelica.Constants.eps.