The ACS712-20A is another variant of the ACS712 current sensor series. Similar to the ACS712-5A, the ACS712-20A is an integrated circuit (IC) module designed for measuring current in electronic circuits using the Hall effect principle. However, the ACS712-20A has a higher nominal current rating of 20A, making it suitable for measuring higher current levels.
This module provides an analog voltage output that is proportional to the current passing through it. The output voltage has a sensitivity of 100mV per ampere of current, meaning that for every ampere of current flowing through the module, the output voltage will increase by 100mV.
Like other ACS712 modules, the ACS712-20A incorporates a Hall effect sensor, a precision voltage reference, and a linear amplifier circuit. It operates by detecting the magnetic field generated by the current flowing through a conductor and converting it into a voltage output.
To use this module, it typically requires a power supply (usually 5V) and proper connection to the circuit being measured. The output voltage can be read using an analog input of a microcontroller or other data acquisition system, and the current value can be calculated by scaling the output voltage with the appropriate factor.
This module is commonly employed in applications that require higher current measurements, such as power monitoring in industrial equipment, motor control systems, battery charging systems, and various other applications involving moderate to high current levels.