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Engine/Tuning
Yes, I am a Moron - Electrical guys help!
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<blockquote data-quote="Dana" data-source="post: 5285455" data-attributes="member: 4521"><p>The reason an alternator doesn't always produce full output is because it's output based on battery voltage. The lower the voltage, the higher the alternator output. As the battery voltage approaches 13.6 volts or so, the ouput of the alternator begins to decrease. </p><p>The reason the alternator may begin to howl when connected to a car with a dead battery is that the regulator is seeing the battery voltage of the dead battery now also. This in turn causes the alternator to produce much higher output. </p><p>The output is also based on the speed of the alternator. </p><p>The load doesn't enter into this anywhere, unless you consider the dead battery that is sensed by the regulator as a load. </p><p>The point is that an alternator will produce voltage and current under any conditions. With no battery in the circuit, the regulator can see zero volts, so it goes to maximum output. This may be brief, but it can be enough to do substantial damage to many things in the electrical system. </p><p></p><p>Dana</p></blockquote><p></p>
[QUOTE="Dana, post: 5285455, member: 4521"] The reason an alternator doesn't always produce full output is because it's output based on battery voltage. The lower the voltage, the higher the alternator output. As the battery voltage approaches 13.6 volts or so, the ouput of the alternator begins to decrease. The reason the alternator may begin to howl when connected to a car with a dead battery is that the regulator is seeing the battery voltage of the dead battery now also. This in turn causes the alternator to produce much higher output. The output is also based on the speed of the alternator. The load doesn't enter into this anywhere, unless you consider the dead battery that is sensed by the regulator as a load. The point is that an alternator will produce voltage and current under any conditions. With no battery in the circuit, the regulator can see zero volts, so it goes to maximum output. This may be brief, but it can be enough to do substantial damage to many things in the electrical system. Dana [/QUOTE]
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Yes, I am a Moron - Electrical guys help!
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