Deck 18: Hall Effect Sensors

Question 1

The Hall generator can be used to measure the speed of a rotating device.

Answer 1

True

Question 2

Figure 18-02
In the accompanying figure, what is being shown?

Answer 2

The effect of bringing a magnetic field near the semiconductor material is being shown. The magnetic field causes the current flow path to be deflected to one side of the material. This causes a potential or voltage to be produced across the opposite sides of the semiconductor material.

Question 3

Figure 18-06
In the accompanying diagram, when the notch is between the sensor and the magnet, a(n) ____________________ is produced by the Hall generator.

Answer 3

voltage

Question 4

A Hall generator is not affected by dirt, oil, or vibration.

Question 5

If the polarity of the magnetic field is reversed, the current path is deflected in the opposite direction.

Question 6

Describe how the Hall effect is produced using the Hall generator.

Question 7

____________________ are designed to produce an output voltage that is proportional to the strength of a magnetic field.

Question 8

The amount of voltage produced by the Hall generator is determined by what two things?

Question 9

A(n) ____________________ is a ferrous metal disk used to shunt a magnetic field away from some other object.

Question 10

Hall effect linear transducers can be obtained that have two types of outputs. What are they?

Question 11

Hall generators have moving parts and contacts that wear out.

Question 12

How can a Hall generator be used in a manner similar to a limit switch?

Question 13

Hall originally used a piece of pure gold to produce the Hall effect, but today a piece of ____________________ material is used instead.

Question 14

Position sensors have the ability to sense the intensity of the magnetic field.

Question 15

Figure 18-06
In the accompanying diagram, when the solid metal part of the disk is between the sensor and magnet, the ____________________ is shunted away from the sensor.