Ideal flux source
The Flux Source block represents an ideal flux source that is powerful enough to maintain specified constant flux through it, regardless of the mmf across its terminals.
You specify the output flux by using the Constant flux parameter, which can be positive, negative, or zero.
The positive direction of the flux flow is indicated by the arrow.
Output flux. You can specify any real value. The default value
The block has two magnetic conserving ports associated with its terminals.