Motor Current Sensing Ic

Current sense amplifiers 4 texas instruments chapter 1.

Motor current sensing ic.

The simplest i v converter is a resistor. 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. Shunt resistors are popular current sensors because they provide an accurate measurement at a low cost. Current sensor circuit shown from the lm741 ic.

The breadboard schematic of the above circuit is shown below. These sensors are automotive grade devices that can take the heat and deliver highly accurate open loop current sensing in the harshest applications environments. So the lm741 chip is an 8 pin. Current sensing overview how integrated resistor current sensors simplify pcb designs the most common way to measure current is to sense.

They provide information to control current in power systems and avoid overheating and short circuits. Our high current sensor ic packages are fully integrated solutions that also provide high accuracy and reliability. All of these applications require precise regulation of the current through a motor or solenoid to control either the torque of the motor or the. The current sensor circuit that we will build is shown below.

Current sensing is also an essential part of energy metering to ensure power efficiency and minimize environmental impact. Accurate high side current sensing is essential for automotive control systems such as electric power steering automatic gear shifting transmission control engine fuel injection control valve control in braking and active suspensions. Current sensing overview chapter 1. One method is simply to purchase a current sensing ic however the same functionality can be achieved with a few common components.

If you want to see this circuit shown from the ic itself see the following.