1. By: David Belasco dab342@psu.edu 814-217-2066
Hall Effect Sensor
By: David Belasco 1 1

2. Hall Effect!?! 1879 by Edwin Hall
Conductor or semiconductor with current flowing in one direction was introduced perpendicular to a magnetic field a voltage could be measured at right angles to the current path

3. Hall Effect continued…
Hall sensors process the magnetic flux density as input information and convert it into an electrical signal

4. Types of Hall Sensors Switch (Unipolar) – Single Magnetic Pole
Latch (Bipolar) – only turns off when opposing field is strong
Bipolar Switch – responds to zero-crossing from North to South

5. US Schematic

6. US1881 – EE Specs

7. US1881 – The Chip

8. My Demo

9. Real World Applications
Push buttons
Position Censor in a Piston
Brake Light

10. What to Consider If needing a hall effect censor, consider the.. Cost
Temperature Range
Position Tolerance
Position Switching Accuracy
Tolerance Buildup

11. Conclusion Advantages Disadvantages Cheap, 20 cents a piece Effective
Flimsy Pins