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When voltage changes from forward voltage to reverse voltage junction voltage cannot change?
Wiki User
∙ 13y ago
A: THAT IS CORRECT a diode conducts only one way that is why it is called a semiconductor Reversing the voltage no current will flow until breakdown.
Wiki User
∙ 13y ago
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What is knee voltage and breakdown voltage?
Knee voltage (cut in voltage) :-The forward voltage at which the current through the P-N Junction starts increasing rapidly is called as Cut in voltage or knee voltage Breakdown voltage :-It is the minimum reverse voltage at which the P-N Junction can conduct without damage to the current
What is mean't by Reverse voltage?
Reverse voltage is voltage is applied in reverse. Instead of the positive voltage going into the anode lead of a component, it goes into the cathode lead of the component.
Which voltage is greater in thyristor whether forward breakover or reverse breakdown voltage?
One voltage is greater in thyristor whether forward breakover or reverse breakdown voltage. The greater of the two voltages in thyristor is forward breakover voltage.
What is a barrier voltage?
The voltage across a forward-biased PN junction in a semiconductor diode or transistor.
Which voltage is greater in thyristor whether forward break over or reverse breakdown voltage?
It is stated that one of the voltage is greater in thyristor whether it be forward breakover or reverse breakdown voltage. It is also stated that the greater of the 2 voltages in thyristor is the forward breakover voltage.
Cut in voltage?
The forward voltage at which the current through the junction starts increasing rapidly, is called the knee voltage or cut-in voltage.
Why breakdown voltage increase in reverse biased p-n junction diode?
when the p-n junction is heavily doped p-n junction diode has very sharp breakdown voltage.
What is the forward voltage so that a semiconductor is heated up in forward bias after the breakover voltage?
When the semiconductor junction is forward biased the primary mode of failure is due to heating because of current. The maximum junction temp is normally 120 deg C. So depending on the way the semiconductor dissipates heat determines the maximum current the device can handle.However when the junction is reverse biased then at a particular voltage depending on the type of semiconductor, size and doping profile at a given voltage the current increases suddenly. If this current is not limited by external circuit then Junction will fuse due to heat.This voltage is fairly constant for a wide range of current and thus provides a sim[ple method of generation a constant voltage.
What is zener break down voltage?
The point in the forward operating region of the characteristic curve where conduction starts to increase rapidly is called Knee voltage of a PN Junction Diode.The breakdown voltage of a diode is the minimum reverse voltage to make the diode conduct in reverse.(or) Breakdown voltage is a parameter of a diode that defines the largest reverse voltage that can be applied without causing an exponential increase in the current in the diode.-- Dinakar
Approximate voltage across the forward-biased base emitter?
The approximate voltage across the forward-biased base-emitter junction is 0.7 volts.
What is meant by cut in voltage?
Cut-in voltage is the value of voltage at which appreciable current begins to flow when a pn junction is forward biased.
How do a schottky diode and ordinary pn junction differ in their operation?
The schottky diode is based on a metal-semiconductor junction, called a schottky barrier, that results in lower forward voltage and vastly decreased switching time. While an ordinary silicon diode has a forward voltage around 0.7 volts, with a germanium diode around 0.3 volts, the schottky can be as low as 0.15 volts. The switching time can be in the tens of picoseconds range, compared to hundreds of nanoseconds. The downside is limited reverse voltage rating and poor reverse voltage leakage, which increases with temperature, causing potential thermal runaway.
