What do you mean by transconductance, Electrical Engineering

Assignment Help:

Q. What do you mean by Transconductance?

The  control that the gate voltage has over the drain current is measured by transconductance and is similar to the transconductance of the tube.It may be defined as follows:

It is is the ratio of the change in drain current (ΔId) to the change in gate source voltage(Vgs) at constant drain source voltage that is

Transconductance = Id / Vgs at constant Vds.

The transconductance of a JFET is usually  expressed either in mA or microamperes.

Amplification factor(µ)

It is  the ratio of change in drain source voltage to the change in gate source voltage at constant drain current

Amplification factor= ΔVds/ ΔVgs at constant Id

Amplification factor of a JFET indicates how much more control the gate voltage has over drain current than has the drain voltage.

Relation among JFET parameters.

The relationship among JFET parametes can be established as under:

We know µ=Vds/ Vgs

Hence

µ = rd*gfs.

Amplification factor = a.c drain resistance * transconductance.


Related Discussions:- What do you mean by transconductance

BASIC ELECTRICLE, kindly tell me which text book is usefull forlearn the ba...

kindly tell me which text book is usefull forlearn the basic electricle.

Exponentially weighted moving average, 1. The Excel file contains daily clo...

1. The Excel file contains daily closes for the S&P/TSX composite index from January 2, 2008 to December 31, 2010. Assuming that December 31, 2010 is the current day. A) Using the

Explain how switching systems are classified, Question 1 Explain how switc...

Question 1 Explain how switching systems are classified Question 2 Explain the function of pulse dialing in rotary dial telephone Question 3 Explain the functioning of crossba

Find the quantity of electricity transferred, If a current of 20A flows for...

If a current of 20A flows for five minutes, find the quantity of electricity transferred. Quantity of electricity,   Q = It = 20 x 5 x 60 = 6000C     

Illustrate computer-controlled routing, Q. Illustrate Computer-controlled r...

Q. Illustrate Computer-controlled routing? Computers are employed in network with common channel signaling (CCS) features. In CCS, there is a separate computer-controlled signa

Radio communication engineering, how electromagnetic wave transmitted from ...

how electromagnetic wave transmitted from the ground are bent back towards the earth when they enter a layer of ionosphere?

Power electronics, principle of 120 degree mode of operation of voltage sou...

principle of 120 degree mode of operation of voltage source intverter

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