What are Closed Circuit Condition and Open Circuit Condition?
Add Time:2010-02-13 16:26:55 Click:153

We have discussed that magnetic flux is a contrived but measurable concept that has evolved in an attempt to describe the flow magnetic field. It is very important for magnet users to comprehend the basic features of magnetic flux in circuit designing. When

.There are avarietyof electrical current nonconductorsintheworld ^lonown as dielertrics.Theelectriccunentcanbe well confiner conductors. But there is essentially not any magnetic flux nonconductor. That is, the magnetic flux can hreely penetrate into and p through any hind of static materials whatever they are solid, liquid, or gas. For this reason, flux leakage is always existed in any magnetic circuit.

.Flux lines will always follow the path of lowest Reluctance, that is, of the least resistance.

.Flux lines always repel each other when they are Anna r. Thus, flux lines can never cross and they normally move in curved paths.

.Plux lines always perpendicularlyenterand leave the pole faces of aferromagnetic material,and, move parallellyto the other boundaries of a ferromagnetic material except for the pole faces. In circuit analysis, boundary that flux lines are parallel to is know Dirichlet boundary, in honor of P G L Dirichlet (1805-1859). While boundary that flux lines are perpendicular to is ^lonown as Neun(1832-1925).

Any ferromagnetic materials have a saturation characteristic to carry flux. When an increase of magnetizing field produces no increase in magnetic polarization of a ferromagnetic material, the material is called in magnetic Saturation State. When a ferromagnetic material approaches its magneticsaturation, flux lineswill passes readilythrough the airorother non-ferromagne~ materials as through the magnet.