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A resistance is connected in series with p-n junction of diodes to limit the number of electrons that flow across the junction.

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13y ago

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Why is a resistance usually connected in series with zener diode?

To drop the unwanted voltage.


Why tunnel diode are used in negative resistance region?

because that the tunnel diode is a standard pn junction diode in many respect except its highly doped pn junction so it has some characteristics in the negative resistance region another that its a standard diode


What is the junction resistance of pn junction diode?

The resistance of a forward biased pn junction is zero.


What will happens if zener diode and resistance are connected in parallel?

If diode is connected in series then current will flow only in one direction. ie. Current flow occurs only when diode is forward biased. ANSWER: It depends are the diodes are connected in series if they are back to back no current will flow if connected in the forward conduction mode then they will conduct.


What is the tUnnel diode?

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


What is tunnel diode?

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


How much forward diode voltage is there with the ideal diode approximation?

Consider ideal diode to be connected in series with resistor of 6kSilicon diode forward bias voltage = 0.7 voltsCurrent across 6k resistor = (5-0.7)/6000 amperesVoltage across {resistor + diode}=4.3 + 0.7=5vIf silicon internal resistance is 6k then voltage across diode=5vIf external resistance is 6k and diode resistance is negligible then voltage across diode=0.7v


Why is input resistance low and output resistance high in transistor?

The input resistance of a trasister is jst like pn junction of a diode which has a breakdown voltage of .7v for silicon and the output resistance is like a reverse bias of a diode and hence the resistance is high


What happen if the series resistor in a forward-biased p-n junction is short-circuited?

The junction (diode or transistor) will be destroyed.


What is Zener resistance of the Zener diode?

zener resistance of a zener diode is the resistance of the zener diode but which is the resistance of a diode


What is pn junction diode?

It's a rectifier diode made simply by combining P type and N type silicon. Where the two are joined, forms a junction that allows conduction in one direction only. A pn junction diode is a diode obtained by by dopping a silicon crystal through the process of covalent bond.


What is the conclusion of p-n junction?

we can conclude that the standard diode conducts current when connected in forward bias mode.