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The Application Of Permanent Magnets In Magnetic Sensors

The Application Of Permanent Magnets In Magnetic Sensors Magnetic Sensors Permanent magnets * Permanent magnets are ubiquitous in modern societies. Devices which use permanent magnets include motors, sensors, actuators, acoustic transducers, etc. These are used in home appliances, speakers, office automation equipment, aerospace, wind turbine generators, medical laboratory diagnostic test equipment, and more. It is [...]

Magnet for IoT Internet of Things: Sensors & Sensing

Magnet for IoT Internet of Things: Sensors & Sensing What is the Internet of Things (IoT)? Devices, vehicles, home appliances, handheld electronics, thermostats, mobile phones, and sensors…These items are denoted by the word “Things” when referring to the Internet of Things. Basically, The Internet of Things it is an umbrella phrase used to address the [...]

Hall Effect Encoder

Hall Effect Encoder Overview A hall effect encoder uses a hall-array sensor passed over a magnetic field to produce a signal that is then interpolated to resolution. HSMAG hall effect magnetic encoders use a magnetic phased array sensor to average the signal over multiple detectors to deliver a robust, high resolution signal that is insensitive [...]

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 [...]

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 [...]

Universal Magnetic Rotary Encoders

Universal Magnetic Rotary Encoders, Universal Magnetic Position Encoder Includes Linear Hall Sensors Rotary encoders convert rotary movement or angular position into analogue or digital signals for use in measurement or control systems. They can be classified in a number of ways, primarily by the type of output they provide, either absolute or incremental. The incremental [...]

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 [...]

N35-N52 Permanent Strong Neodymium Round Magnets

N35-N52 Permanent Strong Neodymium Round Magnets Among those famous round magnets manufacturers, it is a professional supplier in China, welcome to wholesale small round magnets, neodymium disc magnets, magnet disc, strong round magnets from our factory. Neodymium round magnet / Disc Magnet Disc magnets are thin flat round magnets where the thickness does not exceed [...]

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 [...]

Magnet Applications

Magnet Applications, magnets for Speaker, Motor, Toy, Sensor, Switch Speaker magnets are important components in speakers Majority of speaker magnets are made from ferrites, the cost is 10 times less than NdFeB magnets. More and more speaker magnets are made from NdFeB or NdNiCo. They are processed through sintering and electroplating. NdFeB magnets for speakers are used in high-quality speakers, [...]

Hall Effect Device Magnets

HALL EFFECT MAGNETS Hall Effect devices usually have three connections a Vcc (dc power supply positive terminal), Ground (dc power supply negative, zero or ground) and Vo (dc output voltage). Hall Effect devices differ to Reed Switches in that they are more sensitive to the magnitude, direction and polarity of the magnetic fields being applied. [...]

Reed Switch Magnets

REED SWITCH MAGNETS Reed Switches are amongst the simplest of all the magnetic field detection devices. It consists of two thin ferromagnetic plates (usually nickel-iron or nickel-cobalt) called reeds within a glass ampoule (casing) which overlap each other except for a small gap between them so they are not quite touching. Reed Switch Magnets [...]

How to Select Sensor Magnet Guide?

SENSOR MAGNET SELECTION Magnetic field profiles example Magnets, electromagnets and solenoids could all be used to trigger magnetic sensors such as Reed Switches and Hall Effect devices. The choice of magnet is determined by the actual application and the environment of the application. Temperature, distance and location of the magnet, presence of other [...]

HSMAG Magnets for Sensor Applications

HSMAG is a sensor magnet supplier. HangSeng Magnetech designs, produces and supplies magnets and magnetic assembly solutions for the Sensors Industry. Magnets for Sensor We can design magnets to provide specific field strengths at a required position relative to the magnet. We can design magnets to trigger Hall Effect devices at different locations compared [...]

Power Steering Systems

Electric Power Steering System Sensors and Power ICs Power Steering Systems Electronic Power Steering (EPS) systems are becoming prevalent in automotive systems and are quickly replacing hydraulic assist power steering. The move to EPS systems is driven by the necessity for improving overall fuel efficiency and reducing system cost in automobiles. EPS systems [...]

Rotary Measurement Technology

HSMAG products support customers with diverse solutions for rotary measurement, both incremental and absolute. Rotary solutions are used for continuous or discrete positioning, motion control, such as commutation, and many other solutions. Rotary Magnetic Scale Rotary measurements requires two components: Rotary sensing heads Rotary scales HSMAG develops and produces both absolute and incremental [...]

Magnetic Measurement for Sensor Technology

Magnetic measurement is using a scale where the patterns are defined with magnetic north and south poles. The different types of sensor technology - Hall sensors or magneto resistive sensors - are used to read the magnetic pattern and convert them to a electric signal that is used for a motion controller or other electronic [...]