Mask-group

Summary of Operation

Introduction of Field Effect Transistors Distinction between a BJT and FET Junction Field Effect Transistor (JFET) N Channel JFET Summary of JFET Operation Mutual or Transfer Characteristic of n-channel JFET Amplification Factor 𝝁 Definition of Parameters p-Channel JFET

Introduction of Metal Oxide Semiconductor Field Effect Transistor - Mosfet Terminals in MOSFET Physical structure of MOSFET MOSFET Working Operation Summary of Operation MOSFET - N Type MOSFET Operation How does Drain current flow MOSFET operation More about Threshold Voltage Current vs Voltage Characteristics - Derivation Non Ideal Current -Voltage Effects or Second Order Effects Short Channel Effects MOSFET Device Capacitances MOSFET Large and Small signal Model pMOSFET Small SIgnal Model To use MOSFET device as a Capacitor nMOSFET as Capacitor- Working

Single Stage Amplifiers Common Source CS Stage with Diode-Connected Load Circuit to measure the Equivalent Resistance Common Drain Stage or Source Follower Common Gate Amplifier Large Signal Behavior Calculation of Input Resistance of a Common Gate Stage

Inverter with Enhancement n- Type MOS as Load Inverter with Linear Enhancement Type Load

Summary of Operation

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Let us summarize the discussion so far:

To understand the operation of the MOSFET device, the understanding of the MOS capacitor is very important
The MOS Capacitor operation depends on the polarity of the voltage applied between the Body and the Gate.
The MOSFET operates in three modes or regions of operation, depending on the polarity of the applied voltage and also on the magnitude of the applied voltage.
In our discussion here we have taken an N type MOS capacitor. The same discussion is equally valid for the P type MOS capacitor by reversing the applied bias voltage.

Voltage Applied	Type of Operation
V_GB < 0, Gate voltage is negative	Accumulation of Holes - Accumulation Mode
0< V_GB< VT	Depletion of Holes - Depletion Mode
V_GB> VT	Inversion Layer - Inverted Mode

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