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2. Under what condition is a diode never intentionally operated?

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Curtis Strite
2020-07-10 19:08:02
2020-07-10 19:08:02

In the reverse-bias condition, the negative terminal of the source is connected to the anode side of the circuit and the positive terminal is connected to the cathode side.

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Anonymous
2020-07-29 10:53:56
2020-07-29 10:53:56

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Ideal diode:when Ideal diode is in forward biased condition it will conduct with out any voltage drop and resistance across the diode is zero. under reverse biased condition it will not conduct ,it is completely turn offReal diode:when the real diode is in forward biased condition it is not a perfect conductor with zero resistance because in real diode some resistance(few ohms) is present. under reverse biased condition it will take certain time to turn off

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A thin junction diode which exhibits negative resistance under low forward bias condition is known as tunnel diode.

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regular diode can be destroyed in break down condition where as zener diode operates in break down condition

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because reverse biased current is constant upto avalanche breakdown.

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zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage

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False, a zener diode is normally operated reverse biased in breakdown.

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if the voltage across the diode is less than the cut-in voltage of that particular diode .

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acts like a normal diode in forward biased condition

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It would be 0.7V, the same as any other silicon diode; except for one thing, most zener diodes are manufactured with a reversed diode in series with them. When the zener is operated in its normal zener breakdown mode this reversed diode conducts, letting the zener operate. When the zener is operated in its forward biased mode this reversed diode prevents conduction. Thus most zeners have no forward voltage.

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The anod terminal of diode is connected with negative and cathod is connected to positive

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The fractional change due to intensity on minority charge carriers is more than on majority charge carriers. When light is directly polarized it acts like a normal diode but when reverse polarized its current depends on the brightness (intensity of incident light).

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It's called flywheel diode and the purpose is for the diode to pass the current when the relay coil is switched off. Without a flywheel diode the inductance of the coil would produce sparking in the switch, but the diode allows the current to decay slowly with so sparks.

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When a diode is operated as reverse bias the current flow is almost completely blocked. A small amount of current is still able to travel in reverse through the diode and this is referred to as the reverse current saturation.

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Some advantages of varactor diode is function of the voltage that impressed on its terminals. Some disadvantages are reverse-biased operated so no current flows.

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The breakdown voltage of a diode is the minimum voltage at which it conducts in both directions. If you have a 100-volt rectifier diode (1N4002) and you wire it into a 110v circuit, it will flow current in both directions and you'll get no rectification.

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any diode if connected to where the anode is tie to a negative potential will block that voltage. Up to the limit of the breakdown potential of the diode whereby avalanche current will destroy the diode unless current limited

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we say a diode to be in forward biased condition when we connect the positive terminal of the diode(anode) to the positive terminal of the power supply and the negative terminal(cathode) to the negative of the power supply. If we do it in the opposite way i.e. connecting positive terminal to the negative powersupply or viceversa it is called to be in reverse biased condition. In general diodes are configured to work in forward biased condition and not in reverse biased condition. Though there is a certain amount of conductivity in reverse biased condition of a diode due to leakage current.

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Yes, a zener diode is normally operated in the reverse bias direction, cathode more positive than anode.If you forward bias a zener diode, it acts like a normal diode, with a junction voltage between 0.6V and 0.7V, which is not what you want.

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The PIV (Peak Inverse Voltage) rating of a diode is the maximum voltage that you should apply to it in the reverse biased condition. Exceeding this voltage can destroy the diode.

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In the varying input condition, the zener diode is used in such a that any variation in the input voltage,should not in any affect the load (that is the arrangement supplies just the voltage needed by the load no matter how high or low the supply voltage might go). In the varying load condition, the zener diode is connected in such a way that any change in the load voltage should not affect the input voltage.

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all most 50Volts when diode is in reverse bias.

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The most common function of a diode is to allow an electric current to pass in one direction (called the forward biased condition) and to block the current in the opposite direction (the reverse biased condition).

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If the gate is forward biased, a JFET acts as a diode not a FET.

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it conducts at the zener breakdown voltage


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