Permanent Magnet Moving Coil Relay: The arrangement of permanent magnet moving coil relay is shown in Fig. 9.12. In this relay, the coil is free to rotate in the magnetic…
Paralleling Field Coils for DC Series Motor: In this Paralleling Field Coils method, used in fan motors, several speeds can be obtained by regrouping of field coils, as illustrated in…
Parallel Connection of Coupled Coils: Parallel Connection of Coupled Coils - Consider two inductors with self inductances L1 and L2 connected parallel which are mutually coupled with mutual inductance M…
Rogowski Coil Integrator Design: If a Rogowski Coil Integrator Design is placed surrounding a current carrying conductor, the voltage signal induced in the coil is vi(t) = M dI(t)/dt where…
Permanent Magnet Moving Coil Instrument (PMMC): In this type of Permanent Magnet Moving Coil Instrument (PMMC), we have a coil suspended in the magnetic field of a permanent magnet in…
Short Pitch Coil or Chorded Coil: Short Pitch Coil - So far it was assumed that the stator coils are full-pitched (a span of Ï€ rad elect). Coils may have…
Polyphase Circuits Articles: Polyphase System: In an ac system it is possible to connect two or more number of individual circuits to a common polyphase source. Though it is possible…
Coupled Circuit Articles: Coupled Circuits Definition: Two circuits are said to be ‘coupled’ when energy transfer takes place from one circuit to the other when one of the circuits is…