Moving Coil

Also found in: Dictionary, Acronyms, Wikipedia.

Moving Coil


in low-frequency measurement technology, a component of moving-coil measuring systems that is used in light-beam oscillographs and moving-coil galvanometers. A moving coil is a light coil of wire that is located between the poles of a permanent magnet. In a galvanometer, the moving coil is suspended from very thin metallic ribbons; in an oscillograph, it consists of a very thin wire to which a small mirror is attached.

When a current flows through a moving coil, the coil is deflected in the magnetic field. In moving-coil galvanometers, the magnitude of the deflection is read by means of a microscope. In light-beam oscillographs, it is read on the basis of the deflection of a light beam reflected from the mirror.


See references under STUB.


References in periodicals archive ?
The electric signal generated by the moving coil is expressed in terms of magnetic flux density, length of coil wire and velocity of the coil as;
Bose has developed technical strengths in electromagnetics, materials science and motion control that have culminated in high-performance linear actuators using moving coil motor designs (e.g., audio transducers).
Still, many of us found the still more detailed, open sound of moving coils seductive.
The FAST motor is a dc motor with a permanent magnet and a moving coil. The moving coil distinguishes this motor from those that have iron in the rotor.
Contract awarded for 43020136-volt meter moving coil range 0-200v , dc suitable for rolling stock , application flush mounting type, round shape dia -5 inch confirming to is: 1248 part 2, 2003, with amendment no.
35890030093-001, r02 square switch board pattern flush mounting circular scale moving coil dc voltmeter in engg plastic case, full scale deflection 240 degree accuracy class /- 1.5 percent conforming to is 1248,complete with illuminated dial and vibration proof thick rubber gasket.
Contract awarded for 45139167-battery voltmeter moving coil,flush type,dc panel meter for traction application,model m96 of m/s.meco or equivalent of m/s.automatic electric co.alongwith rubber gasket,range 0-150v,
Tenders are invited for Purchase of moving coil d.c voltmeter and ammeter for ece department
Contract awarded for 23509156-ammeter 90 mm x 90 mm moving coil dc ammeter for battery charger range 30-0-30 amps centre zero class 1.5,"flush panel" mounting, meco model no m 96 (square quadrant) with rubber gasket sett & de dr
Contract awarded for Ammeter battery charging dc permanent magnet moving coil type round 65mm dia range 200-0-200 red & green mark on dial panel flush mounting pattern fsd o-50mv to without external shunt.conforming to s