Predefined Variables

A new model contains a list of predefined variables by default.

A predefined variable may be deleted or modified and only have an effect if you explicitly refer to that variable.

Table 1. Predefined variables in CADFEKO.
c0	The speed of light in free space in m/sec.
eps0	The permittivity of free space in F/m.
mu0	The permeability of free space in H/m.
pi	The mathematical constant $π$ (Ludolph’s number).
zf0	The characteristic impedance of free space in Ohm.