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How do alternator diodes work?

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โˆ™ 2015-07-15 21:23:26

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Diodes allow current to flow in one direction only thus changing the alternating current produced inside the "alternator", to direct current which is required by your car's electrical system.

Think of them as check valves for liquids.

Denis

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โˆ™ 2015-07-15 21:23:26
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Q: How do alternator diodes work?
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Where are the alternator diodes on a 1994 Ford Taurus?

Unless things have changed, the diodes are part of the alternator. The voltage regulator is attached to the alternator but the diodes are part of the alternator.


Does a 1978 Ford pickup have diodes?

The alternator in any Ford has diodes. Is that what you are asking about?


How many diodes used alternator for Chevy?

There are 3 positive diodes and 3 negative diodes. The alternator produces AC voltage in 3 phase. Almost all car manufacturers import and domestic use 6 diodes. Diodes can be defective as either "open" or "shorted". An open diode reduces capacity of an alternator while a shorted diode causes almost no charging.


How long will an alternator last when the diodes start going bad?

It's not a good idea to to run your alternator with bad diodes. These diodes rectify the ac power generated by your alternator and turn it into dc power. You will destroy other electrical components in your car and will end up spending more money than the cost of simply replacing your alternator.


What would go bad if you wired an alternator reverse polarity?

You would probably toast the diodes in the alternator.


What is the purpose of a diode in an alternator?

The diodes are part of the rectifier assembly that converts the alternator's AC output to DC. The alternator's charging output flows through six diodes in the rectifier assembly before it goes to the battery and electrical system.


How many diodes does a basic automotive alternator rectifier have?

Nine


How do the diodes in an alternator work?

A diode is a semiconductor that passes current in one direction only. The stator of the alternator generates three phase AC in a delta configuration. The six diodes are connected in a full wave bridge configuration that converts the AC to DC. At any instant of time, only two diodes are conducting, one to ground, the other to the battery. As the alternator spins, each phase takes turns, and the diodes turn off and on in turn as well. The result is a DC voltage with relatively little ripple.


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How do you get the battery light to go off on a 1983 Chevy Caprice when the alternator and battery are good?

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