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What are the most important questions on MOSFET?
Here are the some of the important questions on MOSFET. MOSFET is the Metal Oxide semiconductor field effect transistor which is used for the amplification and switching of the electronic signals. Following are the questions that has been asked in the technical interviews as well as engineering exams-
How to calculate the charge of a MOSFET?
•Neglect all but the mobile inversion charge (valid for deep inversion) •For the MOSFET, the charge in the semiconductor is a linear function of position along the semiconductor side of the plate. Thus, varies from 0 to V DS MOS Capacitor MOS Transistor Q N C oxV GS V T for V GSV T for V GSV T Q NC ox V GS V T Source Drain
What does MOSFET stand for in Semiconductor Terms?
MOSFET stands for Metal Oxide Silicon Field Effect Transistor or Metal Oxide Semiconductor Field Effect Transistor. This is also called as IGFET meaning Insulated Gate Field Effect Transistor.
When does a MOSFET operate in enhancement mode?
The second way in which a MOSFET can operate is called enhancement mode . When there is no voltage on the gate, there is in effect no channel, and the device does not conduct. A channel is produced by the application of a voltage to the gate. The greater the gate voltage, the better the device conducts.
Can a MOSFET be operated as a JFET?
Can be operated as an enhancement MOSFET by applying +ve bias to gate C. Can be operated as an enhancement MOSFET by applying -ve bias to gate 7. MOSFET has greatest application in digital circuit due to D. All of the above 8. The enhancement N-channel MOSFET B. Can be operated as a JFET with zero gate voltage C.
What is the threshold voltage of a MOSFET gate?
An N-channel silicon (EG = 1.1 eV) MOSFET was fabricated using N+ poly silicon gate and the threshold voltage was found to be 1 volt. Now if the gate is changed to P+ poly silicon, other things remaining the same, the new threshold voltage should be………..volts.
When to use MOSFET in a CMOS circuit?
1. In the CMOS inverter circuit shown in figure, the input Vi makes a transition from VOL (= 0 volts) to VOH (= 5 volts). Determine the High to Low propagation delay time (tpHL) when it is driving a capacitive load (CL) of 20 pF. 1. MOSFET can be used as a a. Current controlled capacitor b. Voltage controlled capacitor d.