The application of counter-rotating fields to electrical measuring and indicating devices

摘要

A well-known theoretical proposition in electrical-engineering science resolves a pulsating magnetic field into two fields rotating in opposite directions. The authors have used the inverse of this principle as the theoretical basis for certain prototype indicating or measuring devices. Two oppositely rotating fields which may (or may not) be of the same magnitude and frequency are combined to give a resultant field which can be used practically in many ways for indication, measurement or control. Various electrostatic and electromagnetic applications of this new principle, with test results, are discussed in the paper.