|
Excitation Purity
Excitation, excite, exciting, or excitement may refer to: * Excitation (magnetic), provided with an electrical generator or alternator * Excite Ballpark, located in San Jose, California * Excite (web portal), web portal owned by IAC * Electron excitation, the transfer of an electron to a higher atomic orbital * ''Excitement'' (film), a lost 1924 silent comedy by Robert F. Hill * Sexual excitation * Stimulation or excitation or excitement, the action of various agents on nerves, muscles, or a sensory end organ, by which activity is evoked * "Exciting", a song by Hieroglyphics from the album ''The Kitchen'' See also * Anticipation (emotion) * Anxiety * Endorphins * Excitatory postsynaptic potential * Excited (other) * Excited state, of an atom, molecule or nucleus * Exciter (other) * Pleasure * Psychomotor agitation Psychomotor agitation is a symptom in various disorders and health conditions. It is characterized by unintentional and purposeless motions a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excitation (magnetic)
An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine with field coils, a current must flow in the coils to generate the field, otherwise no power is transferred to or from the rotor. The process of generating a magnetic field by means of an electric current is called excitation. Field coils yield the most flexible form of magnetic flux regulation and de-regulation, but at the expense of a flow of electric current. Hybrid topologies exist, which incorporate both permanent magnets and field coils in the same configuration. The flexible excitation of a rotating electrical machine is employed by either brushless excitation techniques or by the injection of current by carbon brushes (static excitation). Excitation in generators For a machine using field coils, as is the case in most large generators, the field must be established by a curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
