April 2011
Intermediate to advanced
272 pages
7h 4m
English
Content preview from Hall-Effect Sensors, 2nd Edition
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Chapter 8
Speed and Timing Sensors
The ability to measure the speed or position of a rotating shaft is necessary to the proper functioning of many types of machinery. Speed sensors, timing sensors, and encoders are used in applications as varied as automobile ignition controls, exercise equipment, and CNC machine tools. An example of a typical Hall-effect speed sensor is shown in Figure 8-1. When a toothed steel target (such as a gear) is rotated past its flat end, this device provides a train of output pulses, one for each passing target feature.
Figure 8-1 Geartooth sensor assembly. (courtesy of Cherry Electrical Products)
8.1 Competitive ...
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