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due to high voltage across the diode ie more than piv of the diode or current flows more than maximum allowed range of diode.
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∙ 11y ago
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How do you Describe the meter readings if a diode is bad?
A: A very low reading in both direction will indicate a shorted diode. A meter is an indicator not a tester keep that in mind
How can you say diode is gone in generator bridge rectifier?
The most straightforward and unbiased way is to remove the diode from the circuit and check it with a diode tester. Alternatively, if the diode is shorted, the bridged will measure shorted. If it is open, running the generator and monitoring the output with an oscilloscope will reveal a missing phase. One example of an open diode problem in an automobile alternator application is that the alternator will put out enough current to keep the system fail light off, but not put out enough current to meet rated output load.
Why transfer characteristics cannot be obtained for a bridge rectifier?
Its because one of the diode gets shorted.The diode in the left lower arm in a bridge rectifier gets shorted by the ground points of both the cro and the function generator.
Why the n-jfet is operated with the negative voltage not the positive voltage?
In a JFET the only insulation between the gate and the channel is a reverse biased diode junction, if this junction becomes forward biased then the gate and channel are effectively shorted and the device no longer acts as a transistor (it will act as a forward biased diode instead). In the n-channel JFET, the gate is the P-side of this diode and the channel is the N-side of this diode. To keep this diode reverse biased (and the device operating as a transistor) therefor the gate MUST always be maintained at a voltage more negative than the most negative section of the channel.
What is a large slower acting diode?
it is a rectify diode
Can a battery be drained by a shorted diode when the ignition key is off?
A battery cannot be drained by a shorted diode when the ignition key is off.
What if a semiconductor diode is being tested using a digital multimeter and the resistance of the diode is 10 ohms in both forward and reverse-biased conditions is the diode shorted or opened?
The diode is neither shorted nor open. It is a zener diode and it is conducting in both directions. If it were truly shorted, it would read closer to zero ohms in both directions.
Can an alternator on a Renault Megane with a shorted diode still charge the battery?
It depends on which diode, but sometimes it can.
When a damaged diode conducts current in either direction it is called?
shorted
What happens with voltage and current by damaged diode...the diode is IN5408?
It depends on how the diode is damaged. There are generally two cases. One, the diode is shorted, and conducts with a low impedance in both directions. The other, the diode is open, and does not conduct, having a high impedance, in both directions. The effect depends on the particular circuit. In a power supply, a shorted diode will often blow the fuse, while an open diode will result in no output, or in high ripple voltage output. Is it possible that diode has normal voltage output but wrong current,meaning low mA?
How do you Describe the meter readings if a diode is bad?
A: A very low reading in both direction will indicate a shorted diode. A meter is an indicator not a tester keep that in mind
When a 10mA forward bias current and the voltages at the anode and cathode of a diode in a circuit are found to be the same what is the diode most likely to be?
With a 10mA forward bias current, if the voltages at the anode and cathode of a diode in a circuit are found to be the same, then the diode most likely to be shorted.
Why there is no current when two terminals of the diode are shorted?
There must be a break in the power supply elsewhere in the circuit. I suggest a blown fuse The only diode that generates electricity is a solar cell
How can you say diode is gone in generator bridge rectifier?
The most straightforward and unbiased way is to remove the diode from the circuit and check it with a diode tester. Alternatively, if the diode is shorted, the bridged will measure shorted. If it is open, running the generator and monitoring the output with an oscilloscope will reveal a missing phase. One example of an open diode problem in an automobile alternator application is that the alternator will put out enough current to keep the system fail light off, but not put out enough current to meet rated output load.
Amp power wire fuses keep blowing amp will not turn on?
the power suppy diode are probably shorted.
What kind of reading will you get on a shorted diode?
a: the reading will be the same both ways a: A shorted diode will exhibit the same voltage, nearly zero, across it. (Normally, it has between 0.6 and 1.7 volts across it in the forward bias condition.) Out of circuit, measured with an ohmmeter, it will show near zero ohms in both directions.
Why would altinator light stay on with engin off and go out when engine started in discovery91?
You probably have a shorted diode in the alternator.
