A quantitative relationship between inductances and operating currents of automotive electromagnetic devices was necessary for experimentally assessing the nature of the spark that occurs when a current-carrying conductor in an automobile electrical system is broken. Various automotive electromagnetic devices were obtained, and their inductances and dc operating currents were measured. A plot of the data showed, as expected, that an inverse relationship existed, and regression analysis showed that the relationship could be expressed as where L is inductance in millihenries, and I is current in amperes. This formula, which provided sufficient accuracy for the intended experiments, may be used for estimating the inductance of an automotive electromagnetic device if the current drawn by the device is known.
Inductances of Automotive Electromagnetic Devices
Sae Technical Papers
SAE 2002 World Congress & Exhibition ; 2002
2002-03-04
Aufsatz (Konferenz)
Englisch
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