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The Magnetic Field Sensitive Transistor-A New Sensor for Crankshaft Angle Position
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Abstract
A semiconductor sensor is described, suitable for indicating crankshaft angle or more generally any position which can be related to changes in a magnetic field. The sensor is based on a lateral P-N-P transistor which is sensitive to magnetic fields. Devices made in a standard analog IC process are presented and show the voltage sensitivity to magnetic fields to be up to Z orders of magnitude larger than for a comparable Hall-element.
The parameters most interesting for use in automobiles are discussed: sensitivity, zero field offset, temperature effects and mechanical stress effects.
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Authors
Citation
Halbo, L. and Haraldsen, J., "The Magnetic Field Sensitive Transistor-A New Sensor for Crankshaft Angle Position," SAE Technical Paper 800122, 1980, https://doi.org/10.4271/800122.Also In
References
- Wolber, W. G. “Prime Sensors for Electronic Automotive Engine Control” IEEE Transactions on Vehicular Technology VT-26 No. 2 144 150 1977
- Wolber, W. G. “A worldwide Overview of Automotive Engine Control Sensor Technology” SAE Paper No. 780207 , presented at the SAE Congress and Exposition, Detroit, Mich. Febr. 27–March 3 1978
- Davis L. W. Wells, M. S. “Magneto-transistor Incorporated in an Integrated Circuit” Proceedings IREE Australia 235 238 June 1971
- Häfen, G. v. “Si Hall-Effect Sensor with Reduced Sensitivity to Mechanical Stress” Digest of Technical Papers, 9th European Solid State Device Research Conference (ESSDERC 79), Munich Sept. 10–14 1979 59 60
- Halbo L. Hansen, T. A. “Integrated Injection Logic and High-Voltage Analog Circuitry on the same Chip: A Comparison Between Various Combination Processes” IEEE Journal of Solid State Circuits SC-14 No. 4 666 671 1979