What is the voltage gain of common gate amplifier, Electrical Engineering

Assignment Help:

Q. What is the voltage gain of common gate amplifier?

The controlled source gmVgs is connected from drain to source with rd in parallel.The resistor is connected Rs is connected from source to ground.The isolation between input and output circuits has been lost since the gate terminal is connected to the ground.

1718_What is the voltage gain of common gate amplifier.png

By applying KCL to the small signal equivalent circuit, ir = id -gmVgs

Applying KVL to the outer loop,

Vo = (id -gmVgs)rd + Vsg

But ,Vsg = -Vgs = Vi and  id = -Vo/RD

Therefore

Vo = (-Vo /RD + gmVi)rd + Vi

Voltage gain,

Av =Vo/Vi = (gmrd +1)RD /(RD + rd)


Related Discussions:- What is the voltage gain of common gate amplifier

Show how a 16-to-1 multiplexer implement the logic function, Q. Show how a ...

Q. Show how a 16-to-1 multiplexer can be used to implement the logic function described by the following truth table.

Break over voltage of finger voltage - thyristor , Break over  voltage of...

Break over  voltage of Finger Voltage   The  minimum  forward voltage  when the gate  is opened  at which SCR  starts  conducting  heavily is called  the break over  voltage. To

Static v- i characteristics, Static V- I Characteristics The  static V-...

Static V- I Characteristics The  static V- I  characteristics of power diodes is shown  in figure 1.2  when the  anode is made  positive with  respect to cathode the power  dio

Structure of bipolar junction transistor, Structure of Bipolar junction tra...

Structure of Bipolar junction transistor:  A BJT contains three differently doped semiconductor regions that are: emitter region, base region and collector region. These regio

Achieving reforms goals using gis applications, Achieving reforms goals usi...

Achieving reforms goals using GIS applications: GIS could help in achieving the above reforms goals through various applications: •  Creation of consumer database and cons

List out the five categories of the 8085 instructions, List out the five ca...

List out the five categories of the 8085 instructions. Give examples of the instructions for each group. 1.  Data transfer group - MOV, MVI, LXI. 2.  Arithmetic group - ADD,

Digital electronics, Design a 4-bit synchronous counter that has the follow...

Design a 4-bit synchronous counter that has the following sequence: 0 ?4? 9?12 ? 14 ?15 and repeat using: i) JK FF ii)D FF

Determine sequence of modulation frequencies, The generator of AM EMFs cons...

The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel sp

Square wave generator ( 10 MHz to 20MHz), I need a simple design of above ...

I need a simple design of above mentioned , this oscillator will be used in a wireless power transmission

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd