Podcast
Questions and Answers
What is the primary reason for the breakdown of covalent bonds in a p-n junction diode under reverse bias?
What is the primary reason for the breakdown of covalent bonds in a p-n junction diode under reverse bias?
- Decreasing the doping concentration of the junction
- Increasing the temperature of the junction
- Increasing the electric field at the junction (correct)
- Decreasing the electric field at the junction
What is the characteristic of a Zener diode?
What is the characteristic of a Zener diode?
- High forward current
- Sharp breakdown voltage (correct)
- Low breakdown voltage
- High knee voltage
What is the mechanism of avalanche breakdown in a p-n junction diode?
What is the mechanism of avalanche breakdown in a p-n junction diode?
- The electric field breaks the covalent bonds
- Minority charge carriers collide with the lattice, generating more carriers (correct)
- The doping concentration of the junction increases
- The photovoltaic effect creates electron-hole pairs
What is the purpose of a Zener diode?
What is the purpose of a Zener diode?
What is the difference between forward bias and reverse bias in a p-n junction diode?
What is the difference between forward bias and reverse bias in a p-n junction diode?
What happens to the width of the depletion layer when a diode is forward biased?
What happens to the width of the depletion layer when a diode is forward biased?
What is the approximate value of the forward resistance of a diode?
What is the approximate value of the forward resistance of a diode?
What is the voltage at which the forward current starts to increase rapidly in a diode?
What is the voltage at which the forward current starts to increase rapidly in a diode?
What is the minimum reverse voltage required to cause a breakdown in a germanium diode?
What is the minimum reverse voltage required to cause a breakdown in a germanium diode?
What type of breakdown occurs in a diode when the reverse voltage exceeds a certain threshold?
What type of breakdown occurs in a diode when the reverse voltage exceeds a certain threshold?
What happens to diode D1 during the positive half cycle in a half wave rectifier?
What happens to diode D1 during the positive half cycle in a half wave rectifier?
What is the purpose of a Zener diode in a circuit?
What is the purpose of a Zener diode in a circuit?
What is the term for the minimum voltage required for a diode to conduct current?
What is the term for the minimum voltage required for a diode to conduct current?
What happens to the collector-base junction in a transistor during normal operation?
What happens to the collector-base junction in a transistor during normal operation?
What is the term for the sudden increase in current in a diode due to a high voltage?
What is the term for the sudden increase in current in a diode due to a high voltage?
In a junction transistor, which of the following is true about the base?
In a junction transistor, which of the following is true about the base?
What is the biasing condition for a PNP transistor during normal operation?
What is the biasing condition for a PNP transistor during normal operation?
In a NPN transistor, what is the direction of the flow of majority charge carriers?
In a NPN transistor, what is the direction of the flow of majority charge carriers?
What is the primary function of the base in a junction transistor?
What is the primary function of the base in a junction transistor?
What is the result of the interaction between the emitter and collector regions in a junction transistor?
What is the result of the interaction between the emitter and collector regions in a junction transistor?
In a PNP transistor, what is the voltage at the base-emitter junction when the emitter-base junction is forward biased?
In a PNP transistor, what is the voltage at the base-emitter junction when the emitter-base junction is forward biased?
What is the common configuration of a transistor as an amplifier?
What is the common configuration of a transistor as an amplifier?
What is the term for the graphs that describe the relationship between voltages and currents when the emitter of a PNP transistor is common to input and output circuits?
What is the term for the graphs that describe the relationship between voltages and currents when the emitter of a PNP transistor is common to input and output circuits?
What is the purpose of a transistor in a circuit?
What is the purpose of a transistor in a circuit?
What is the voltage at the collector-base junction when the collector-base junction is reverse biased?
What is the voltage at the collector-base junction when the collector-base junction is reverse biased?
What is the primary reason for the small base current in a PNP transistor?
What is the primary reason for the small base current in a PNP transistor?
What is the relationship between the collector current and base current in a transistor?
What is the relationship between the collector current and base current in a transistor?
What is the purpose of reverse bias in a transistor circuit?
What is the purpose of reverse bias in a transistor circuit?
What are the three configurations in which a transistor can be connected in a circuit?
What are the three configurations in which a transistor can be connected in a circuit?
What type of transistor has a region with a high concentration of holes?
What type of transistor has a region with a high concentration of holes?
