MY attention has been drawn to a note in NATURE of January 11 (p. 253) which quotes from the Electrical World of New York “a novel method of obtaining sinusoidal alternating currents of very low ...

Brushless and brushed motors, as two common types of DC motors, exhibit significant differences in structure, working ...

This is a preview. Log in through your library . Abstract In this paper, we prove that the space of two parameter matrix-valued BMO functions can be characterized by considering iterated commutators ...

Scientific American is the authority on science and technology for a general audience, with coverage that explains how research changes our understanding of the world and shapes our lives. First ...

A motor — or a generator — requires some normal magnets and some electromagnets. The usual arrangement is to have a brushed commutator that both powers the electromagnets and switches their polarity ...

IF any one event can be regarded as the birth of electrical engineering, it is surely the discovery by Faraday in 1821 of the principle of the electro-motor; that is, that a conductor carrying a ...

Preventive maintenance maximizes uptime while controlling costs. Maintenance crews strive to reduce maintenance costs and manage their workloads more effectively. Since DC machines require more ...

Force - Just like magnets, electric charges can repel or attract each other. Because opposites attract, there is a force between the negatively charged electrons and the positively charged proton.