ACS712 Current Sensor : Working & Its Applications

ACS712 current sensor is a transducer type component that is used for converting a magnetic signal into an electrical signal.
These sensors measure and calculate the amount of current applied to the conductor with not affecting the performance of the system.
Ohm’s law is applied for measuring the voltage drop when flowing current is detected.
ACS712 is used to convert the current input into a voltage output, this sensor is operate on both AC and DC.
It produces analog voltage to the sensor and the analog voltage output is proportional to the measured current.
ACS712 current sensor is also called as Hall effect sensor.

Working of ACS712 Current Sensor

A current sensor is used to detect the current which flows through the onboard current sensor circuit in its IC.
A current sensor detects the incoming current through its magnetic field generation.
At one point the current is detected then the current sensor generates a voltage that is proportional to the magnetic field, then these will be used to measure the amount of current.

This IC has a 2.1kV RMS voltage isolation along with a low resistance current conductor and the above pin diagram described all pins, the supply voltage is required 5V.

It is used in many industrial, commercial, and communication applications. This IC is applicable for Automobile applications.
The applications of this IC can be found in motor control circuits, for load detection and management, SMPS, over current fault protection circuits.