Bell Technologies Inc.,
1. Hall Sensors Device - Instrumentation Quality
2. Hall Sensors Device - Single Axis
3. Hall Sensors Device - Three Axis
4. Hall Sensors Device - High Linearity
Showing posts with label Hall Sensor. Show all posts
Showing posts with label Hall Sensor. Show all posts
Sunday, March 22, 2009
Hall Sensors Device - Instrumentation Quality
Bulk Indium Arsenide BH-200 Series
Bell Technologies Inc.,
Instrumentation Quality
Description
The BH-200 series of Hall effect magnetic field sensors consists
of ten models designed to meet the requirements of most
magnetic field measurement applications. Models in the BH-200
Series are built in various configurations to measure axial,
transverse, and tangential magnetic field components. Sensitivities
range from 6 to 75 mV/kG with input and output resistance
of several ohms.
Models
1. BH-200 General Purpose Transverse
2. BH-201 Ultra-thin, Transverse
3. BH-202 Small Axial
4. BH-203 General Purpose, Axial
5. BH-204 Mini Axial
6. BH-205 Mini Transverse
7. BH-206 High Sensitivity, Low-cost Transverse
8. BH-207 High Resolution, Tangential
9. BH-208 Ultra-mini, Axial
10. BH-209 Ultra-mini, Transverse
Bell Technologies Inc.,
Instrumentation Quality
Description
The BH-200 series of Hall effect magnetic field sensors consists
of ten models designed to meet the requirements of most
magnetic field measurement applications. Models in the BH-200
Series are built in various configurations to measure axial,
transverse, and tangential magnetic field components. Sensitivities
range from 6 to 75 mV/kG with input and output resistance
of several ohms.
Models
1. BH-200 General Purpose Transverse
2. BH-201 Ultra-thin, Transverse
3. BH-202 Small Axial
4. BH-203 General Purpose, Axial
5. BH-204 Mini Axial
6. BH-205 Mini Transverse
7. BH-206 High Sensitivity, Low-cost Transverse
8. BH-207 High Resolution, Tangential
9. BH-208 Ultra-mini, Axial
10. BH-209 Ultra-mini, Transverse
Saturday, March 21, 2009
Hall sensor Typical Applications
The following are just some of
the many applications where Hall
Sensors are used:
• Magnetic Card Readers
• Proximity Sensors
• Rotary Speed Sensors
• Watt Measurement
• Multipliers
• Magnet Field Measurements
• Electrical Power Measurements
• Current Sensors
• Brushless dc Motors
• Compasses
• Gaussmeters
• Watt-hour Meters
• Permanent Magnet Measurements
• Air Gap Measurements
• Magnetic Circuit design
• Flux Leakage Measurements
• Nondestructive Memory Readouts
• Linear/Angular Transducers
• Magnetic Tape Heads
• Guidance Systems
• Ignition Systems
Source ( pdf )
Bell Technologies Inc.,
http://www.physics.brown.edu/physics/demopages/
Demo/em/demo/halleffect.pdf
Hall sensor Typical Shapes and Sizes
Bell Technologies Inc.,
Hall sensors are available in a wide variety of shapes and sizes
For adaptability of shapes and sizes for adaptability to many
different applications. The two basic types are transverse and
axial, as illustrated in Figure 4.
Hall sensors are available in a wide variety of shapes and sizes
For adaptability of shapes and sizes for adaptability to many
different applications. The two basic types are transverse and
axial, as illustrated in Figure 4.
The transverse type is useful where the field must be measured in
thin gaps and for multiplier applications. The axial type must be
used where the field is parallel to the axis of a hole, such as in
traveling wave tubes or solenoids. Standard transverse probes as
thin as .006" and axial probes as small as .063" in diameter are
available. Bulk-material Hall plates may be sandwiched between
ferrite pieces to obtain effective air gaps less than .003". This may
be useful in applications requiring maximum magnetic efficiency,
such as electronic compasses and proximity sensors. For a Hall
sensor to accurately measure flux density, the Hall plate area
should be smaller than the cross section of the field to be measured.
The output voltage is proportional to flux density, but a Hall plate is
not equally sensitive over its entire area. If a high resolution is
important, the Hall plate area should be small. Active areas as
small 0.010” are available, while even smaller ones have been made.
Source ( pdf )
http://www.physics.brown.edu/physics/demopages/Demo/
thin gaps and for multiplier applications. The axial type must be
used where the field is parallel to the axis of a hole, such as in
traveling wave tubes or solenoids. Standard transverse probes as
thin as .006" and axial probes as small as .063" in diameter are
available. Bulk-material Hall plates may be sandwiched between
ferrite pieces to obtain effective air gaps less than .003". This may
be useful in applications requiring maximum magnetic efficiency,
such as electronic compasses and proximity sensors. For a Hall
sensor to accurately measure flux density, the Hall plate area
should be smaller than the cross section of the field to be measured.
The output voltage is proportional to flux density, but a Hall plate is
not equally sensitive over its entire area. If a high resolution is
important, the Hall plate area should be small. Active areas as
small 0.010” are available, while even smaller ones have been made.
Source ( pdf )
http://www.physics.brown.edu/physics/demopages/Demo/
em/demo/halleffect.pdf/
What Is A Hall Sensor?
Bell Technologies Inc.,
A Hall sensor is a four-terminal, solid-state device capable of
producing an output voltage VH, proportional to the product of the
input current, lc,the magnetic flux density, B, and the sine of the
angle betweeen B and the plane of the Hall sensor. A reversal in
the direction of either the magnetic field or the control current will
result in a polarity change of VH. A reversal in the direction of
both will keep the polarity the same. By holding the control current
constant, the Hall voltage may be used to measure magnetic flux
density. Multiplication may be accomplish by varying both the
control current and the magnetic field..
Source ( pdf )
http://www.physics.brown.edu/physics/demopages/Demo/
em/demo/halleffect.pdf
http://www.physics.brown.edu/physics/demopages/Demo/
em/demo/halleffect.pdf
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