In principle, any AC electrical generator can be called an alternator, but usually, the term refers to small rotating machines driven by automotive and other internal combustion engines. An alternator that …

Keep reading to learn more about the purpose of your car’s alternator, as well as the symptoms of a failing alternator, and how to check the alternator to determine if it’s time for it to be replaced.

Find an alternator that fits your car and delivers the same performance as original equipment, or better. We carry long lasting replacements, like Duralast Gold alternators that come with a Limited-Lifetime …

Mar 4, 2025 · Learn how your car's alternator powers electrical components and charges the battery. Discover how it works, signs of a bad alternator, and when to get service.

Sep 10, 2025 · It’s essentially a small generator that converts mechanical energy into electricity, bolted to the engine and driven by a belt connected to the engine’s crankshaft. Inside, a rotor spins past...

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The alternator's rotor is comprised of a series of magnets that rotates quickly and produces an alternating current (AC), which is converted into direct current (DC) using the rectifier or diode.

Aug 5, 2025 · Learn what an alternator is, how it works, and its key components. A beginner-friendly guide to understanding alternators in automotive and industrial applications.

alternator, Source of direct electric current in modern vehicles for ignition, lights, fans, and other uses. The electric power is generated by an alternator mechanically coupled to the engine, with a rotor field …

Feb 24, 2012 · What is an Alternator? An alternator is defined as a machine which converts mechanical energy to electrical energy in the form of alternating current (at a specific voltage and frequency). …