Protection Methods for Automotive Electronics Circuits

October 05, 2015 // By Jim Colby, Littelfuse
In modern automotive designs, all on-board electronics are connected to the battery and the alternator. The alternator is the main source of electrical transients—the worst of which is load dump. This condition occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle's electronic system.

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