AC motor current measurement This Sensor Feedback article is written by Jim Lepkowski from Microchip Technology Inc. Sensors in are used to sense the current, position, speed and direction of the rotating motor. In most systems, several sensors are used to provide feedback information on the motor. These sensors are used in the control loop and to improve the reliability by detecting fault conditions that may damage the motor.

The three most popular current sensors in applications are: Shunt resistors, Hall effect sensors, and Current transformers. Shunt resistors are popular current sensors because they provide an accurate measurement at a low cost. Hall effect current sensors are widely used because they provide a non-intrusive measurement and are available in a small IC package that combines the sensor and signal-conditioning circuit. Current-sensing transformers are also a popular sensor technology, especially in high-current or AC line-monitoring applications.

Find more information about for Sensor by Jim Lepkowski here – downloadable PDF file from

Useful links to download:

    Speed 1254 kb/sCircuit Diagram for Motor Control Sensor by Jim Lepkowski

   Speed 8987 kb/s[Verified] Circuit Diagram for Motor Control Sensor by Jim Lepkowski

   Speed 2547 kb/sCircuit Diagram for Motor Control Sensor by Jim Lepkowski Direct Download

Related Post

Circuit Diagram for Full-Duplex Intercom using TDA7052 Audio Power Amplifier IC
Honda Shadow VT1100 Wiring Diagram and Electrical System Troubleshooting (85 - 95)
1999 Hyundai Tiburon Coupe Sound System Schematic and Circuit Diagram
Clarion NK1U Mind Wire Harness and Cable Connection
Typical Intake Air Temperature Sensor Circuit Diagram


    diagram of motor,ac motor controller,AC motor controlled in different location,ac motor speed control circuit,ac motor speed control schematic,