5A Range ACS712 Current Sensor Module – High Precision AC/DC Hall Effect Sensor for Arduino in Pakistan

Overview

The ACS712 5A Current Sensor Module is a sophisticated solution for measuring both AC and DC current. Based on the Allegro ACS712ELCTR-05B-T chip, it uses a copper conduction path located near the surface of the die. Applied current flowing through this path generates a magnetic field which the Hall IC converts into a proportional voltage. This “Hall Effect” design means your microcontroller is galvanically isolated from the load, providing a crucial layer of safety when working with 220V AC mains.

Key Features

• High Sensitivity: Delivers 185mV for every 1A of current, making it much more accurate for low-power projects than the 30A version.

• Dual Mode: Capable of measuring both Alternating Current (AC) and Direct Current (DC).

• Total Isolation: The internal conduction path is electrically isolated from the sensor leads ($2.1kV RMS isolation).

• Low Noise: Integrated filter bandwidth can be set via the “Filter” pin for improved accuracy in noisy environments.

• Simple Interface: Output is a simple analog voltage (VCC/2 at 0A), easily readable by any ADC pin.

Technical Specifications

Why Choose the 5A Version?

If you are measuring a 10W LED bulb or a mobile charger, a 30A sensor will barely show a “blip” on the graph. The 5A version “zooms in,” providing a much larger voltage change for small current shifts, which results in higher resolution and better data.