Speed Transducer SS461A Hall Effect Sensor
●APPLICATION DESCRIPTION:
■A Midwest manufacturer of automotive sensors uses Hall effect devices in their Speed Transducer to detect crankshaft rotation in automobiles and trucks.
■The customer required a very high sensitivity latching sensor to guarantee a duty cycle close to 50 percent, one of the advertised features. The SS461A was selected. The Hall sensor is potted in a zinc die-cast housing. The sensor counts pulses in a ring magnet that is mechanically coupled to the vehicle's crankshaft. The output of the sensor is used in speedometers, tachometers, on-board computers and tachographs. The Hall device is superior to electromagnetic pick-ups (variable reluctance) because of the Hall effect sensor's sharp square wave output.
■Electromagnetic sensors give a sine wave output that can cause spurious pulses or false readings.
■The customer also liked the excellent symmetry of the SS461A, which gives a duty cycle close to 50 percent when matched with the customer's magnet.
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[ Speed Transducer ][ automobiles ][ trucks ] |
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2017/12/19 |
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AP 00232 |
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94 KB |
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