Hall Effect Sensors in Electronic Labs
HALL EFFECT SENSOR
GT ECE ACADEMIC LABS
SLIDES BY ZACHARY CHAN
OVERVIEW
•
Hall Effect sensors can detect the strength of a magnetic field
•
They can be used for current sensing and rotational speed in motors and as
magnetic proximity sensing
•
There are different types of Hall effect sensors:
•
Digital vs Analog output
•
Unipolar vs Bipolar sensing capabilities (whether the sensor can detect only North or only
South or Both)
HALL EFFECT
•
The Hall Effect occurs when a magnetic field is
placed near a semiconductor plate with
current flowing through it
•
The magnetic force created by the magnetic
field forces electrons towards one side of the
plate, creating a potential difference
between the two sides of the plate
HEAD ON DETECTION
•
Head on detection involves a
magnetic field moving towards or
away from the face of the sensor
•
Useful for proximity sensing
SIDEWAYS DETECTION
•
Sideways detection involves a
magnetic field moving parallel to
the face of the sensor
•
This type of detection is useful for
detecting the rotational speed of a
motor and for current sensing
Hall Effect sensors play a crucial role in detecting magnetic fields, enabling applications such as current sensing, rotational speed measurement in motors, and magnetic proximity sensing. They operate based on the Hall Effect phenomenon, where a magnetic field influences the flow of current in a semiconductor plate, leading to a potential difference. These sensors come in various types, offering digital or analog output, unipolar or bipolar sensing capabilities, and different detection directions like head-on and sideways, each serving unique purposes in electronic systems.
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Presentation Transcript
HALL EFFECT SENSOR GT ECE ACADEMIC LABS SLIDES BY ZACHARY CHAN
OVERVIEW Hall Effect sensors can detect the strength of a magnetic field They can be used for current sensing and rotational speed in motors and as magnetic proximity sensing There are different types of Hall effect sensors: Digital vs Analog output Unipolar vs Bipolar sensing capabilities (whether the sensor can detect only North or only South or Both)
HALL EFFECT The Hall Effect occurs when a magnetic field is placed near a semiconductor plate with current flowing through it The magnetic force created by the magnetic field forces electrons towards one side of the plate, creating a potential difference between the two sides of the plate
HEAD ON DETECTION Head on detection involves a magnetic field moving towards or away from the face of the sensor Useful for proximity sensing
SIDEWAYS DETECTION Sideways detection involves a magnetic field moving parallel to the face of the sensor This type of detection is useful for detecting the rotational speed of a motor and for current sensing
