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Voice Coil Actuators Magnet

For the structure similarly to loudspeaker, we call that Voice Coil Motor. China Magnets Source Material Ltd experienced manufacturing the permanent magnet for Voice Coil Motor.

The magnetic Voice Coil Motor with the advantages high responsibility, high speed, high acceleration, simple structure, small volume, and convenient control. Voice coil motor is widely used in precision positioning system and many different forms of high speed, high frequency, fast and precise positioning movement in the system.

We company producing the magnets for one of biggest Voice Coil Actuators manufacturer for 15 years. And we deeply understand a Good quality Magnet is crucially to a Voice Coil Motor.

Voice coil actuators are direct drive devices based on a permanent magnet

At the heart of all voice coil actuators is the moving coil, also described as a voice coil actuator. The essential principle is the same as you find in any permanent magnet louder speaker. The coil is enclosed in a magnet housing, and by passing a current through the coil, a magnetic field is generated. The amount of force generated is governed by the equation.

F is the force generated
N is the number of turns in the winding (constant)
I is the current flowing through the winding
B is the magnetic flux (constant)
Therefore, doubling I (current) doubles F (Force).

More information about the Voice Coil Actuators Magnet, please feel free to send your requirements to

Contact information
China Magnets Source Material Limited
Tower B, Qiongzhu Building,
Huawang Rd,Longhua District,
Tel: +86 755 28174720
Fax: +86 755 28174720