Discrete Semiconductor Devices and Circuits
Insulated Gate Field-Effect Transistors
39 questions By Tony R. Kuphaldt
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Question 13 of 39
Metal Oxide Field-Effect Transistors (MOSFETs) differ in some regards from Junction Field-Effect Transistors (JFETs). Explain in your own words what the difference(s) is/are.
Reveal answerI’ll let you do your own research here.
Notes:Despite their many similarities, MOSFETs and JFETs are not identical. Ask your students to explain why the two types of transistor behave differently, not just recite differences read from a textbook or other reference.
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Question 14 of 39
Identify each type of MOSFET (whether it is N-channel or P-channel, D-type or E-type), label the terminals, and determine whether the MOSFET in each of these circuits will be turned on or off:

Reveal answer
Follow-up question: which of these transistors is depleted and which is enhanced?
Notes:It is very important for your students to understand what factor(s) in a circuit force a MOSFET to turn on or off. Some of the information contained in the diagrams is relevant to the determination of each transistor’s status, and some is not.
Be sure to ask your students to explain their reasoning for each transistor’s status. What factor, or combination of factors, is necessary to turn a MOSFET on, versus off?
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Question 15 of 39
Identify each type of MOSFET (whether it is N-channel or P-channel, D-type or E-type), label the terminals, and determine whether the MOSFET in each of these circuits will be turned on or off:

Reveal answer
Follow-up question: which of these transistors is depleted and which is enhanced?
Notes:It is very important for your students to understand what factor(s) in a circuit force a MOSFET to turn on or off. Some of the information contained in the diagrams is relevant to the determination of each transistor’s status, and some is not.
Be sure to ask your students to explain their reasoning for each transistor’s status. What factor, or combination of factors, is necessary to turn a MOSFET on, versus off?



