Hall Effect Sensor Output Voltage

To help determining whether the 2 wire hall effect abs sensor is functioning correctly different deviations from the example signal are mentioned along with possible causes.

Hall effect sensor output voltage.

Hall effect sensor principles. Many automotive hall effect sensors have a built in internal npn transistor with an open collector and grounded emitter meaning that rather than a voltage being produced at the hall sensor signal output wire the transistor is turned on providing a circuit to ground through the signal output wire. Set one input of the comparator to a reference level of say 350 mv. 25ma 15vdc 0 5 25 c 85 c.

Consider the diagram below. Hall effect sensors are used for proximity sensing positioning speed detection and current sensing applications. V out max v q output v b mt b sat b sat v out min figure 3. The signal from the sensor is shown and can be downloaded.

With a lab scope a 2 wire hall effect abs sensor signal voltage is measured with the wheel turned by hand. Hall effect voltage sensor transducer hall voltage sensor transducers voltage sensor tranducer. The hall sensor output feeds into the other input of the comparator. The output of the comparator can drive the led with suitable series resistor.

The voltage signal produced by the sensor depends on the speed of the trigger wheel and the number of turns in the coil so an output voltage could be expected between 1v and 2v during the engine. When the magnetic flux density around the sensor exceeds a certain pre set threshold the sensor detects it and generates an output voltage called the hall voltage v h. B field response of the drv5053 when no magnet is present b 0 the output. Frequently a hall sensor is combined with threshold detection so that it acts as and is.

Analog hall sensor functionality 4 analog hall sensor functionality ti s analog hall sensors such as the drv5053 have an analog voltage output that changes proportionally with the magnetic field.