Hall Effect Sensor Output Voltage

The output of the comparator can drive the led with suitable series resistor.

Hall effect sensor output voltage.

A hall effect sensor or simply hall sensor is a device to measure the magnitude of a magnetic field its output voltage is directly proportional to the magnetic field strength through it. Hall effect sensors are used for proximity sensing positioning speed detection and current sensing applications. Consider the diagram below. The signal from the sensor is shown and can be downloaded.

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. With a lab scope a 2 wire hall effect abs sensor signal voltage is measured with the wheel turned by hand. B field response of the drv5053 when no magnet is present b 0 the output. 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.

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. What the comparator will be showing is if the hall sensor voltage is above or below the reference voltage. 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. Hall effect voltage sensor transducer hall voltage sensor transducers voltage sensor tranducer.

25ma 15vdc 0 5 25 c 85 c. V out max v q output v b mt b sat b sat v out min figure 3. The hall sensor output feeds into the other input of the comparator. Set one input of the comparator to a reference level of say 350 mv.

Frequently a hall sensor is combined with threshold detection so that it acts as and is.