direction. A moving coil meter indicates the average (mean) of a varying current through it, which is zero for AC. For this reason, moving-coil meters are...

for moving-coil cartridge, therefore a "step up transformer" is sometimes used instead. However, there are available many "high output" moving coil cartridges...

coil—a coil of wire capable of moving axially in a cylindrical gap containing a concentrated magnetic field produced by a permanent magnet—the coil is...

line instruments are quite unserviceable for work upon long cables. Moving coil galvanometer was developed independently by Marcel Deprez and Jacques-Arsène...

An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). Electromagnetic coils are used in electrical...

a dynamic microphone based on the generation of electric current by moving a coil of wire to various depths in a magnetic field. This method of modulation...

measurement. A moving coil galvanometer can be used as a voltmeter by inserting a resistor in series with the instrument. The galvanometer has a coil of fine...

and control systems. Galvanometer mechanisms are divided into moving magnet and moving coil galvanometers; in addition, they are divided into closed-loop...

early headphones used moving iron drivers, with either single-ended or balanced armatures. The common single-ended type used voice coils wound around the poles...

moving-coil indicator, which unlike the conventional type has two coils moving together in a permanent-magnet field of non-uniform strength. The coil...

sound quality. A moving iron speaker consists of a ferrous-metal diaphragm or reed, a permanent magnet and a coil of insulated wire. The coil is wound around...

overload, compared with more delicate but more precise instruments of the moving-coil D'arsonval type For "go/no go" testing, there is no need to read the...

from "moving-iron" speakers used on such sets is sometimes described as torturous, although by the late 1920s the Kellogg-Rice dynamic (moving-coil) speaker...

Armour Home). Even though Goldring was mainly known for their moving coil cartridges and moving magnet cartridges, turntables etc., they also manufactured...

other end of the core is a second coil that is allowed to move closer or further from the fixed input coil. This moving coil is connected to a capacitor to...

A coilgun is a type of mass driver consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic...

knots. Rope are often coiled and hung up in lofts for storage. They are also hung over stakes in farm wagons and on hooks in moving vans, fire apparatus...

fixed to the speaker's frame, thereby moving the cone of the speaker. By applying an audio waveform to the voice coil, the cone will reproduce the sound...

motherboards) by sending voltages to them. Moving coil microphone contact microphones operate by suspending a coil of wire within a magnetic field or alternatively...

solenoid on.[citation needed] Moving coil system, contact controlled: refers to watches with a balance wheel with integrated coil, fixed magnets and mechanical...

(February 20, 1883 – May 29, 1960) was an American inventor who invented the moving coil loudspeaker in 1925 along with Chester W. Rice at General Electric He...

D'Arsonval–Weston meter movement uses a moving coil which carries a pointer and rotates on pivots or a taut band ligament. The coil rotates in a permanent magnetic...

December 1940) was a French physician, physicist and inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter. D'Arsonval was...

pinion – Type of linear actuator Solenoid – Type of electromagnet formed by a coil of wire Sclater, N., Mechanisms and Mechanical Devices Source book, 4th Edition...

American electrical engineer who was the joint inventor in 1925 of the moving coil loudspeaker along with Edward W. Kellogg. Rice was born in Lynn, Massachusetts...

founded in 1911 by Edwin Pridham and Peter L. Jensen, co-inventors of the moving-coil loudspeaker at their lab in Napa, California, under United States Patent...

circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another...

system keeps the coil centered in the gap and provides a restoring (centering) force that returns the cone to a neutral position after moving. A typical suspension...

gradually step the output voltage up or down, or to rotate the position of a moving-coil AC regulator. Early automobile generators and alternators had a mechanical...

wireless transmission. In 1898, Lodge gained a patent on the moving-coil loudspeaker, utilizing a coil connected to a diaphragm, suspended in a strong magnetic...