From forklifts and tractors to the family car, every vehicle requires a steady supply of electricity to run the computer, lights, and vital electrical components. Without constant recharging, these systems will drain even the largest battery, which is why the alternator is such a crucial part of your electrical system.

What Is an Alternator?

Most alternators are small devices located somewhere near the front of the engine and are usually connected to the driveshaft through the vehicle's serpentine belt. Using the power of magnetism, alternators transform the engine's mechanical power into electrical energy, which feeds accessories while charging the battery.

How Alternators Work

Every alternator contains a central rotor, which is a large cylinder with triangular iron finger poles placed around a core of coiled wires known as field windings. The finger poles are arranged in a staggered pattern, creates a powerful magnetic field to generate electricity when the engine turns the rotor.

Signs of a Faulty Alternator

Most alternator issues can be identified in advance, giving you time to have the part repaired or replaced before it fails completely. If your interior or exterior lights are noticeably dim, the vehicle is difficult to start, or you hear a whining or grinding noise, the problem could be with the alternator. You can resolve these issues by adjusting or replacing the belts. You can also prevent these problems with routine alternator maintenance.

The experts at Eubanks Auto Electric in De Kalb, TX, have been serving drivers and heavy equipment owners throughout the area since 1954. See their full list of their highly specialized services online. Call (903) 667-2081 to speak with a technician today and follow their Twitter for more automotive advice.