Podcast
Questions and Answers
What is the meaning of the name 'Thyristor'?
What is the meaning of the name 'Thyristor'?
- A device with the ability to change its state from ON to OFF
- An acronym for 'The Yearly Rectifier and Semiconductor Transistor'
- A combination of the capital letters from THYRatron and transISTOR (correct)
- A type of semiconductor device with four layers and three junctions
How did the International Electrotechnical Commission (IEC) define a thyristor in 1963?
How did the International Electrotechnical Commission (IEC) define a thyristor in 1963?
- It is a device with the ability to control current in one direction
- It is a type of semiconductor switching device with four layers and three junctions
- It constitutes three or more p-n junctions and has two stable states (correct)
- It is a type of silicon-controlled rectifier (SCR)
Which is the oldest and first member of the thyristor family?
Which is the oldest and first member of the thyristor family?
- Transistor
- Thyratron
- International Electrotechnical Commission (IEC)
- Silicon Controlled Rectifier (SCR) (correct)
What is the main reason behind naming the SCR as 'SCR'?
What is the main reason behind naming the SCR as 'SCR'?
What are the two stable states of a thyristor according to the IEC definition?
What are the two stable states of a thyristor according to the IEC definition?
What is the significance of the term commutation in relation to thyristors?
What is the significance of the term commutation in relation to thyristors?
In the forward conduction mode, what happens to the reverse biased junction J2?
In the forward conduction mode, what happens to the reverse biased junction J2?
What is the latching current (IL) of a thyristor defined as?
What is the latching current (IL) of a thyristor defined as?
Which of the following is the most commonly used thyristor?
Which of the following is the most commonly used thyristor?
What is the purpose of the gate pulse width in relation to the latching current (IL)?
What is the purpose of the gate pulse width in relation to the latching current (IL)?
What does the two-transistor analogy of an SCR involve?
What does the two-transistor analogy of an SCR involve?
What does an SCR act like when turned ON?
What does an SCR act like when turned ON?
In which mode is the thyristor said to be forward biased?
In which mode is the thyristor said to be forward biased?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
What material was chosen for SCR due to its high temperature and power capabilities?
What material was chosen for SCR due to its high temperature and power capabilities?
What happens to junction J2 in the forward conduction mode?
What happens to junction J2 in the forward conduction mode?
What is the meaning of the term 'Thyristor', as derived from its name?
What is the meaning of the term 'Thyristor', as derived from its name?
How did the International Electrotechnical Commission (IEC) define a thyristor in 1963?
How did the International Electrotechnical Commission (IEC) define a thyristor in 1963?
What is the main reason behind naming the Silicon Controlled Rectifier (SCR) as 'SCR'?
What is the main reason behind naming the Silicon Controlled Rectifier (SCR) as 'SCR'?
What does the two-transistor analogy of an SCR involve?
What does the two-transistor analogy of an SCR involve?
Which material was chosen for SCR due to its high temperature and power capabilities?
Which material was chosen for SCR due to its high temperature and power capabilities?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
What is the anode current of the device in the two-transistor analogy of an SCR with a gain of PNP transistor = 0.4, gain of NPN transistor = 0.5, and gate current = 50 mA?
What is the anode current of the device in the two-transistor analogy of an SCR with a gain of PNP transistor = 0.4, gain of NPN transistor = 0.5, and gate current = 50 mA?
In the forward conduction mode, what happens to the reverse biased junction J2?
In the forward conduction mode, what happens to the reverse biased junction J2?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
What happens to junction J1 and J2 when the thyristor is turned ON and conducting?
Which of the following is the most commonly used thyristor?
Which of the following is the most commonly used thyristor?
What is the purpose of the gate pulse width in relation to the latching current (IL)?
What is the purpose of the gate pulse width in relation to the latching current (IL)?
What is the meaning of the name 'Thyristor'?
What is the meaning of the name 'Thyristor'?
What are the two stable states of a thyristor according to the IEC definition?
What are the two stable states of a thyristor according to the IEC definition?
'Silicon was chosen because of its high temperature and power capabilities.' What material was chosen for SCR due to its high temperature and power capabilities?
'Silicon was chosen because of its high temperature and power capabilities.' What material was chosen for SCR due to its high temperature and power capabilities?
'When turned ON: there is a low resistance current flow path from anode to cathode, it acts like a ___.' What does an SCR act like when turned ON?
'When turned ON: there is a low resistance current flow path from anode to cathode, it acts like a ___.' What does an SCR act like when turned ON?
'When anode to cathode forward voltage is increased with gate circuit open, reverse biased junction J2 will have an avalanche breakdown at a voltage called forward breakover voltage VBO.' What happens to junction J2 in this scenario?
'When anode to cathode forward voltage is increased with gate circuit open, reverse biased junction J2 will have an avalanche breakdown at a voltage called forward breakover voltage VBO.' What happens to junction J2 in this scenario?
