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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.


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.


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

You would probably toast the diodes in the alternator.


Why do headlights on your escort van flicker?

Have the alternator tested. I would suspect one or more of the diodes in the alternator are bad.


How many diodes does a basic automotive alternator rectifier have?

Nine


How do you know if its the diodes or the regulator if alternator isn't chargingOn A 94 Pontiac firebird?

On any alternator you can check with a voltmeter -- disconnect the positive going to the alternator, use a towel or electrical tape to isolate it, then start the car and you should read DC volts accross the terminal of 12-16v if the diodes are working, if they arent switch it to AC -- if you read > 2v your diodes are shorted I'm pretty sure the diodes and regulator are integrated into the Alternator -- so just replace that, otherwise you can take it off and they can check it at any Kragens for free.


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

triple diodes in alternator are bad


Why is the direction of diodes in alternator diode trio is opposite to the direction of diodes in the rectifier bridge?

A three phase alternator will have six diodes in the rectifier bridge, three with their anodes connected to the phases, and cathodes commoned to the positive terminal, and three with the cathodes connected to the phases, and anodes commoned to the negative terminal, which is likely the housing of the alternator. The trio diodes arrangement will match the positive rectifiers, i.e. anodes to the phase connections, cathodes (denoted usually by a stripe around the body on small diodes), connected to the D+ terminal


Does an alternator produce a c voltage?

Yes, and internal diodes convert it into dc.


What is the component in the alternator is responsible for direct current for charging the battery?

Diodes and rectifier


What is the purpose of an exciter diode in an alternator?

There are three exciter diodes on all alternators. They are connected to the stator windings. The purpose of the diodes is twofold. While the engine is running, it turns off the alternator indicator light and supplies power to the voltage regulator.


What happens if you remove the diodes from an alternator?

If you would remove those diodes, it would generate AC power instead of DC. When the alternator makes electricity it makes it in AC, but your cars battery runs on DC. Those diodes calm down, if you will, the current making it DC. So if the diodes are removed please don't put it back in your car, you will blow up your battery. No one wants that.


What would cause a battery drain on a 1991 F-150?

Shorted diodes in the alternator.


Where is diode located on a 1995 Ford Escort lx?

Most vehicle diodes are located in the alternator.


What are the construction details of a brushless alternator?

A brushless alternator assembly will have the following major components. These include the case, stator, diodes, bearings, shaft, regulator and coils.


Will a bad battery ruin a new alternator?

Yes, it can. A completely dead battery can blow the alternator diodes, at least in older systems - I am not so certain about newer systems, whether or not they are protected against this annoyance. In any case, the alternator is not generally designed to charge a battery from scratch, but just to keep it charged during normal use. The alternator will not be completely ruined, but it will not function until the diodes are replaced.


What is automobile alternator?

Automobile alternator is used to supply the A.C current to the vehicles but the vehicles need D.C current so there is an diodes and rectifier to convert the A.C current into D.C current Automobile alternator is used to supply the A.C current to the vehicles but the vehicles need D.C current so there is an diodes and rectifier to convert the A.C current into D.C current Automobile alternator is used to supply the A.C current to the vehicles but the vehicles need D.C current so there is an diodes and rectifier to convert the A.C current into D.C current Automobile alternator is used to supply the A.C current to the vehicles but the vehicles need D.C current so there is an diodes and rectifier to convert the A.C current into D.C current Automobile alternator is used to supply the A.C current to the vehicles but the vehicles need D.C current so there is an diodes and rectifier to convert the A.C current into D.C current


Will jumping a car batery damage alternator diodes?

Not if you jump it from the battery or electrical system of another car.


Why diodes does not work properly in high frequency?

Diodes have capacitance, placing a limit on their switching rate.


Two discrete diodes connected back to back can work as a transistor?

Two diodes, whether or not discreet, cannot work together as a transistor. The diodes and transistor have different profiles to optimize them for their specific functions


Does alternator diodes prevent battery discharging?

A diode is a one-way valve for electricity. Since an alternator produces alternating current, the diodes allow electrons to flow in only one direction. That's how it converts AC current into direct (DC) current. There are usually three diodes in an alternator. It's called a diode bridge and is also known as a "rectifier". Revised answer. Yes it's called a diode trio. But there are actually a total of six diodes in a complete rectifier bridge. There are usually 3 stator windings. Each winding has two diodes. One diode allow positive to the battery and the other diode prevents positive from flowing to ground.


What happens when you hook up a battery wrong?

You probably will destroy the diodes in the alternator and any other electronic equipment that includes transistors or diodes.