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Voice Coil Motors (VCM)

Voice Coil Motors (VCM), also called Voice Coil Actuators (VCA), is an electric motor consists of a magnet and yoke in conjunction with a coil. The magnet’s position, the type of magnet, the surrounding structure, etc., can influence the efficiency of the unit. Voice-Coil-Motors Some examples of applications of VCM Shaker/Vibrator Voice coil [...]

What’s GMR magnetic sensor : “Giant Magnetoresistance”?

What’s GMR magnetic sensor : “Giant Magnetoresistance”? The “giant magnetoresistive” (GMR) effect was discovered in the late 1980s by two European scientists working independently: Peter Gruenberg of the KFA research institute in Julich, Germany, and Albert Fert of the University of Paris-Sud . In 1988, scientists discovered the “Giant Magneto Resistive” effect – a large [...]

High-precision automotive magnetic position sensor

High-precision automotive magnetic position sensor AMS is a global leader in the design and manufacture of high performance analog ICs. The AMS AS5161 is a contactless Hall-based automotive magnetic position sensor designed for accurate angular measurement over a full 360 degree turn. A sub-range can be programmed to achieve the best output characteristic for the [...]

Reed Switches

Reed Switches, Hall Effect and Magnetoresistive Sensors Magnetic sensors indirectly measure properties such as direction, position, rotation, angle and current by detecting the magnetic field and its changes. The first application of permanent magnet was a 3rd century BC Chinese compass, which is a direction sensor. Compared to other direct methods such as optical or [...]

Starter Control Circuit Components

Starter Control Circuit Components Starter Motor Magnetic Switches The ⚡ starter motor ⚡ requires large amounts of current (up to 300 amperes) to generate the torque needed to turn the engine. The conductors used to carry this amount of current (battery cables) must be large enough to handle the current with very little voltage drop. [...]

Hall-Effect Sensors

Hall-Effect Sensors Based on the principle that if a current is allowed to flow through thin conducting material that is exposed to a magnetic field, another voltage is produced. The switch contains a permanent magnet, a thin semiconductor layer made of gallium arsenate crystal (Hall layer), and a shutter wheel. The Hall layer has a [...]

Position and Motion Detection Sensors

Position and Motion Detection Sensors Many electronic systems require input data concerning position, motion, and speed. Most motion and speed sensors use a magnet as the sensing element or sensed target to detect rotational or linear speed. The types of magnetic speed sensors include magnetoresistive (MR), inductive, variable reluctance (VR), and Hall-effect. In addition, the [...]

Automotive Sensor Magnets

Automotive Sensor Magnets - Some customers ask, what kind of sensor needs a magnet? The following This article, I hope to help you! Non-contact sensors use magnetic materials. Such as Hall sensor, car position sensor, motor speed sensor, load cell, security alarm sensor, magnetostrictive displacement sensor, car brake sensor, car wheel speed sensor, magnetron sensor, vehicle [...]

Brief Introduction of Sintered Alnico Magnet

Brief Introduction of Sintered Alnico Magnet Alnico magnet has got a lot of attention after discovered by Tokushichi Mishima in 1931. Alnico magnet is still occupying the important position among the consumption structure of permanent magnet even this days due to its several advantages. Alnico magnet can be divided into sintered Alnico magnet and casting [...]

Main NdFeB Magnet Application

Main NdFeB Magnet Application Main Application OF NdFeB Magnet, NdFeB Magnet Application , NdFeb magnets ( neodymium magnets) are having strong magnetic properties, therefore neodymium magnets are widely applied in high tech areas, energy domain and areas of daily life. Wind generation,MRI,CT,electrical cars,cellphones,DC motors, AC motors, serve motors, linear mortors,sensors,magnetic instruments, meters, operators, electrical bike, [...]

Tiny magnetic sensor deemed attractive

Tiny magnetic sensor deemed attractive, Ultra-sensitive magnetic sensor technology magnetic fields, Sensor Magnet Tiny magnetic sensor deemed attractive - Ultra-sensitive magnetic sensor technology pioneered at PML may soon be commercialized for a host of applications from detection of unexploded bombs and underground pipes to geophysical surveying and perhaps even imaging of the brain and heart. In late October [...]

Magnetic Speed Sensor ICs

Magnetic Speed Sensor ICs - HSMAG is a market leader for rotational speed and direction detection Hall-effect sensor integrated circuits. Leveraging applications expertise, decades of mixed-signal Hall-effect IC design, and a broad portfolio of patents, Allegro offers solutions tailored to four key automotive applications: camshaft, crankshaft, transmission, and wheel speed (ABS). Magnetic Speed Sensor [...]

Magnetic Scale Technology

Magnetic Scale Technology - The unique HSMAG scale production technology serves many customer requirements regarding accuracy, precision and economy that cannot be met by other magnetizing processes.  The patented HSMAG scale producing method is digitally driven and can produce any pattern with the highest accuracy. The scale is produced is many steps ensuring the highest [...]