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What happen to a bridge diode rectifier if one of the diodes is defected?
Wiki User
∙ 14y ago
you have to have direct current to charge any battery
alternating current is constantly changing polarity in pulses back and forth
so when it sends electrons into a battery to charge it it alternates polarity and removes the charge from the battery
direct current never changes polarity it is a constant supply of power If one diode is removed or the defect in one of the diodes is a break in the circuit as apposed to the default allowing power to flow either way then you would get half wave rectification which is direct current in pulses it is not constant it would charge your battery but is inefficient use of your alternator as you would only be getting half the normal charge
If the faulty diode allows current to flow in both directions then you would get half wave rectification in one direction and a short circuit in the opposite pulse.I believe this would damage the alternator windings but i have no proof of this
half wave rectification has been used in the past but is not common as diodes are so cheap nowadays and because the alternator using half wave rectification was very inefficient
Wiki User
∙ 14y ago
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What happens when one of the diodes is removed from the bridge rectifier?
Nothing will happen to the diode but that rectifier effectively becomes a half-wave rectifier.
What happen if all the diode in bridge rectifier is reversed?
it will work as a rectifier . because the AC current to be rectified will not be effected by this change. the out put DC polarity will be changed.
What happen when two of four diode in a bridge rectifier is short circuit?
You will get reduced amperage (or output) from the alternator. A alternator rated at 80 amps would probably only produce 50-60 amps. If a diode in a rectifier is shorted, then the alternator output would be greatly reduced or possibly no output at all.
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