[ELECS] Flashcards - FETs
(25 cards)
Increasing the gate-to-source voltage in an n-channel MOSFET beyond threshold voltage causes the drain current to ______
Increase
In a FET, current conduction is due to?
Electrons or holes depending on type
This type of FET has no channel until it is induced by a voltage applied to the gate
E-MOSFET
A type of FET that can use the same bias method as BJT is a(n)
E-MOSFET
The main advantage of a FET over BJT is?
Higher Input Impedance
3 regions of a JFET Characteristic Curve
Ohmic, Active, and Breakdown Region
Which FET is more sensitive to static charges?
Enhancement MOSFET
It is the ratio of a change in output current (A/5) to a change in the input voltage
Transconductance
The region where FET behaves like a constant current source is called?
Saturation Region
This type of FET has a channel that can is controlled by the gate voltage.
D-MOSFET
In a MOSFET, the process of removing the channel of charge carriers and thus decreasing the channel conductivity.
Depletion
Which device has a metal oxide insulating layer?
MOSFET
A MOSFET can operate in
Both Depletion and Enhancement Mode
The input impedance of FET is generally ___
High
An n-channel JFET conducts when?
Gate-to-source voltage is 0
Pinch-off voltage in a JFET refers to?
The voltage at which the drain current becomes constant
one of two major types of FETs; sometimes called IGFET.
MOSFET
The simplest way to bias a D-MOSFET
Zero Bias
In a MOSFET, the process of creating a channel or increasing the conductivity of the channel by the addition of charge carriers.
Enhancement
A plot of Gate-to-source Voltage to Drain Current
Transfer/Transconductance Curve
Which type of FET is usually used in Digital Circuits
Enhancement MOSFET
In a JFET, the gate is always _____
Reverse Biased
Which material is commonly used to make FETs?
Silicon
In a FET, the output current is mainly controlled by ___
Gate Voltage
