Hall Current Module
Introduction Hall Current Module:
A hall sensor is a kind of magnetic field sensor based on the Hall Effect.
Electricity carried through a conductor would produce a magnetic field when varies with current, and a Hall sensor could be used to measure the current without interrupting the circuit. Typically, the sensor is integrated with a wound core and permanent magnet that surrounds the conductor to be measured. Hall sensors can be categorized into Linear hall sensors and switch Hall sensors.
The Hall effect is due to the nature of the current in the conduct. Current consists of the movement of many small charge carriers, typically electrons, holes, ions (see Electromigration), and all three. When a magnetic field is present, these charges experience a force, called the Lorentz force.[3] When such a magnetic field is absent, the charges follow approximately straight, 'line of sight' paths between collisions with impurities, phonons, etc. However, when a magnetic field with a perpendicular component is applied, the paths between collisions are curved so that moving charges accumulate on one face of the material. This leaves equal or opposite charges exposed on the other face, where there is a scarcity of mobile charges. The or the applied magnetic field. The separation of charge establishes an electric field when the opposes the migration of further charge, so a steady electrical potential is established for as long as the charge is flowing.
Specifications:
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Mixture: 3.0 to 5.5V
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single supply operation: 120 kHz
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The Current Sensor Module ACS7: 12-5A
Circuit Operation:
Monitoring the Current flow in a device by a mains-powered appliance is just complicated. Because continuous current flow monitoring by a circuit creates current isolation in the target device, we need to measure current flow without affecting the target device. Hall effect current sensor circuit Using Arduino helps to monitor or log current flow to a device.
We measure current flow in a circuit to calculate several specifications, for an electronic designer it is important to measure and data log the current level with respect to time, a times multi-meter with current measurement felicity helps us to measure the same. Do you look for the main current sensor circuit with data logging, then this article helps you in a better way. The popular and easy method of current sensing is the Hall effect current sensing method.
The ACS712 from Allegro provides precise solutions for AC or DC current sensing which is suitable for industrial, commercial, and communications systems. The device package allows for an easy implementation by the customer. Typical applications include motor control, load detection or management, switch-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications. The device consists of a precise and low-offset, linear Hall circuit with a copper conduction path located near the surface of the die.
Applied current flowing through this copper the conduction path generates a magnetic field that the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transduce. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, that is programmed for accuracy (acs712-datasheet).
Here the ACS712 current sensor is placed in a breakout board and connected with the Current sense target load and Microcontroller. The sensor detects current flow through IP+ and IP- pins (Resistance Current Conductor), it creates a hall effect and then proportional voltage output taken from pin 7 (VIOUT) of ACS712. It can be directly fed into the microcontroller Analog input pin after the filter arrangements.his configuration increases gain to 610 mV/A. For an oscillator current output, this differential amplifier circuit helps to bring steady-state Vout. This is a typical application of the circuit from the datasheet.
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How the Hall Current Module Work:
The Current Sensor Module ACS712-10A is a fully integrated and hall effect-based linear current sensor with 2.1kVRMS voltage isolation or an integrated low-resistance current conductor. Technical terms aside it is simply put forth as a current sensor when uses its conductor to calculate and measure the amount of current applied. The 5A range Current Sensor Module ACS712 is made up of a linear Hall circuit that is exact, low-offset, or has a copper conduction channel close to the die’s surface. The Hall IC converts the magnetic field created by the applied current flowing via this copper the conduction route into a proportionate voltage. In a wide range of applications such as over-current protection circuits, battery chargers, switch mode power supplies, digital watt meters, programmable current sources, etc., sensing or controlling current flow is a key necessity. The Current Sensor Module ACS712-5A sensor, which could precisely measure AC or DC current, is the foundation of this ACS721 current module. Related Video: How To Use Arduino Current Sensor ASC712For more current sensors, click Current Sensors.
30A Range CURRENT Sensor Module ACS-712 ACS712 30Amp Hall Effect Current Sensor Module Straight 3 Pin Range 30A For Arduino Electronics Circuitry & Parts.This current sensor board is based on the Allegro ACS712ELCTR-30A bi-directional hall-effect current sensor chip when detects positive and negative flowing current in the range of minus 30 Amps to positive 30 Amps. The board operates at 5V DC and the current flow through the sensor is converted to an output voltage starting at 1/2Vcc (or 2.5V) for no current flow and moves up 66mV per amp for positive current or down -66mV per amp for negative current.
The Allegro ACS712 provides an economical and precise solution for AC and DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation. Typical applications include motor control, load detection or management, switched-mode power supplies, and overcurrent fault protection. The device consists of a precise, low offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC or converted into a proportional voltage. Device accuracy is optimized by the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, that is programmed for accuracy after packaging. The output of the device has a positive slope (>VIOUT(Q)) that an increasing current flows through the primary copper conduction path (from pins 1 and 2 to pins 3 and 4), which is the path used for current sense.
Frequently Asked Questions
What is the Hall effect module?
The Hall Effect Magnetic and Proximity Sensor Module can be used to detect the presence (or absence!) of nearby objects such as magnets.
Why is the Hall effect used?
So, the Hall effect is used to measure the charge carrier concentration of the semiconductors or insulators and the voltage produced by the magnetic field.
What is a Hall sensor module?
A Hall effect sensor (or simply a Hall sensor) is a type of sensor that detects the presence and magnitude of a magnetic field using the Hall effect. The output to the voltage of a Hall sensor is directly proportional to the strength of the field. It is the name of the American physicist Edwin Hall.
Why is it called the Hall effect?
The Hall effect is named after Edwin Hall, who in 1879 observed that electrons moving longitudinally along a metal strip (under the influence of an electric field) will, if also subject to a magnetic field perpendicular to the plane of the strip, be deflected toward the side of the strip.
Where is the Hall effect applied?
Applications for Hall-effect ICs include use in ignition systems, speed controls, security systems, alignment controls, micrometers, mechanical limit switches, computers, printers, disk drives, keyboards, machine tools, key switches, and pushbutton switches.
