2 Wire Hall Effect Sensor Circuit

The amount of current i s is changed by the sensor when a tooth is passing the sensor.

2 wire hall effect sensor circuit. The connections are a v gdd and out. A1302 hall effect sensor. The mlx92241 ic is the new generation factory programmable hall effect switch ic designed in mixed signal submicron cmos technology. This device integrates a voltage regulator hall sensor with advanced offset cancellation system programmable digital logic and a current sink configured output driver all in a single package.

Components needed for hall effect sensor circuit. As shown in figure 2 the ground of the sensor is also the signal wire. The max9621 provides a single chip solution to interface two 2 wire hall effect sensors to low voltage microprocessors µp through either a digital output for hall effect switches or an analog output for linear informa tion or both. The 2 wire hall effect abs sensor is current regulating.

These are contactless magnetically activated switches and sensor ics with the potential to simplify and improve electrical and mechanical systems. The induced voltage can affect the operation of a good sensor. When the device is placed within a magnetic field the magnetic flux lines exert a force on the semiconductor material which deflects the charge carriers electrons and. Hall effect sensors consist basically of a thin piece of rectangular p type semiconductor material such as gallium arsenide gaas indium antimonide insb or indium arsenide inas passing a continuous current through itself.

The max9621 protects the hall sensors from. Depending on the sensor design the presence. I assume that if one would connect the wires in the correct way you could get an sum or subtraction hence enabling a 2 wire circuit. Testing either a 2 or 3 wire hall effect speed sensor is a relatively easy task and one that can save you quite a bit of money in the long run.

Testing a ckp s resistance. The a1302 hall effect sensor is an ic that uses 4 5 6v as input for operation. The voltage between v gdd would be 24v and the out port would reflect the influence of a magnetic field on the sensor. Do not test the resistance on a hall effect type ckp sensor.

Allegro microsystems uses the latest integrated circuit technology in combination with the century old hall effect to produce hall effect ics. The 2 wire hall effect abs sensor has a 12 v power supply wire but no direct ground. If the readout is infinite resistance the sensor has an open in the circuit. This is perfect because the arduino supplies 5v of power right in between this range.

Hall effect sensor interfaces that already includes the max9921.