Parallel Magnetic Circuits

Author: E.E. Kimberly

Magnetic circuits in parallel under the influence of a common magnetomotive force carry flux in proportion to their cross-sections and permeabilities and in inverse proportion to their lengths. Fig. 10-13 shows a good example of magnetic circuits in parallel. It should be remembered that any magnetic circuit has in parallel with it a number of so-called leakage paths which carry useless flux. In some types of apparatus, such as control magnets, the leakage flux may be neglected; but in other apparatus, such as motors, generators, and transformers (see Chapter 17), the design must include an allowance for leakage flux.