Advertisements
Advertisements
प्रश्न
Differentiate between the threshold voltage and the breakdown voltage for a diode.
उत्तर
Threshold voltage | Breakdown voltage | |
(i) | The forward voltage at which the current through the p-n junction starts increasing rapidly is known as the threshold voltage. | Reverse voltage at which the p-n junction breakdown occurs is called the breakdown voltage. |
(ii) | The magnitude of this voltage is lower than the breakdown voltage. | The magnitude of this voltage is higher than the threshold voltage. |
APPEARS IN
संबंधित प्रश्न
(i) Explain with the help of a diagram the formation of depletion region and barrier potential in a pn junction.
Explain the working of P-N junction diode in forward and reverse biased mode.
In the following diagram 'S' is a semiconductor. Would you increase or decrease the value of R to keep the reading of the ammeter A constant when S is heated? Give reason for your answer.
Draw a labelled diagram of a full wave rectifier. Show how output voltage varies with time if the input voltage is a sinusoidal voltage.
With reference to semi-conductors answer the following :
(i) What is the change in the resistance of the semi-conductor with increase in temperature ?
(ii) Name the majority charge carriers in n-type semi-conductor.
(iii) What is meant by doping ?
The plate current in a diode is 20 mA when the plate voltage is 50 V or 60 V. What will be the current if the plate voltage is 70 V?
With reference to a semiconductor diode, what is meant by:
(i) Forward bias
(ii) Reverse bias
(iii) Depletion region
Answer the following question.
Why photodiodes are required to operate in reverse bias? Explain.
Diffusion in a p-n junction is due to ______.
Explain the formation of the barrier potential in a p-n junction.