ACS712 Current Sensor Module 20A

The 20A Range Current Sensor Module ACS712 is a widely used current sensing device that leverages the ACS712 IC to measure current in a circuit. It is compact, easy to use, and suitable for both DC and AC current measurement.

Pin Configuration

1. VCC: Power supply input (5V).
2. GND: Ground connection.
3. OUT: Analog output signal proportional to the current.

Working Principle

• The ACS712 is a Hall Effect-based sensor.
• It measures current by detecting the magnetic field generated around a conductor.
• The module outputs an analog voltage proportional to the current being measured.
  • For example:
    • 0A Current: Output = 2.5V.
    • +20A Current: Output ~ 4.5V.
    • -20A Current: Output ~ 0.5V.

Applications

• Motor control and monitoring.
• Battery management systems.
• Overcurrent protection.
• Renewable energy systems (e.g., solar).
• General-purpose current sensing in electronics.