Why BJT is known as current controlled device and FET is known as voltage controlled device?

swathi

• Apr 9th, 2015

In BJT we give input as a current to the base so it operates taking small input current signal and gives large output current signal so it is called current controlled.
in FET we give input voltage signal to the gate so the output will be of current signal so it is called voltage controlled device.

uzipereg

 Profile Answers by uzipereg Questions by uzipereg

• Jul 30th, 2011

For Active BJT: Ic = BETHA * Ib
(the collector/output current is controlled by the base/input current)

Saturated MOSFET: Id= 0.5*u*Cox*(W/L)*Vod, where Vod is the overdrive voltage: Vod= Vgs - Vt
(the drain/output current is controlled by the overdrive voltage)

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How to Convert Binary to Excess 3 Code and vice versa?

Ramkrishna

• Apr 16th, 2015

Simply add 011 in each binary number...

Deepanwita Saha

• Feb 4th, 2015

Why binary code converted to the excess three code?
?Binary to excess three code conversion short theory.

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akshay manmode

• Apr 30th, 2015

Amplitude modulation: the encoding of the carrier wave by variations of its amplitude in accordance with an input signal.
A broadcast system that uses amplitude modulation.

noise in modulation: noise produced by undesirable amplitude variations of radio-frequency signal.

ravi

• Apr 25th, 2015

7805 voltage regulator

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What is meant by Novell Netware why we use it and what are the supported OS.

What frequency bands are used in Satellite Communication?

Ankit Kant

• May 14th, 2015

Microwave bands are used in satellite communication. In gigahertz, their ranges are:
L : 1-2
S : 2-4
C: 4-8
X: 8-12
Ku: 12-18
K: 18-26.5
Ka : 26.5-40
Q : 33-50
Onwards, we have U, V, W, F, D bands.

gani

• May 1st, 2015

L,c,s,x,ku,k,ka,v,w

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Which one of the following is used for high speed power application?a) BJTb) MOSFETc) IGBTd) TRIAC

Kunjan Shinde

• Jun 10th, 2015

BJT is faster than MOSFET
BJT consumes more power than MOSFET..

for High speed power applications they can use MOSFET at the input end and BJT at the output.

Ashish Patel

• Apr 22nd, 2015

MOSFET

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What is Modulation?Why we Require Modulation?

Ankush Bisht

• Jul 11th, 2015

It is the process of mixing the data s/g with carrier s/g
It is required so that to travel the s/g up to a long distance

NAGA TEJA

 Profile Answers by NAGA TEJA Questions by NAGA TEJA

• Mar 16th, 2015

By varying the characteristics of carrier signal in accordance with the instantaneous values of message signal....

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Why are the 2 input terminals of an op-amp are called as inverting & non-inverting terminals?

SUJITH

• Jul 15th, 2015

A high Input at inverting terminal with respect to other give a inverted output where as a high input at non-inverting terminal gives the same as output

krishnakant

• Jul 31st, 2014

The differential amplifier can perform all the arithmetic operations such as addition subtraction even integration so need operational amplifier but basically it is a directly coupled high gain amplif...

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ali raza

• Aug 7th, 2015

In this servo transformer a control unit is used which check the output voltage w.r.t required output voltage. It works as if it is feed back.... controls its output voltages.

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What is the advantage and dis advantage of Logical and Physical Address Space ?

I have received my projector by post this Evening to find out it is not working as it should. When I select the USB / SD card option it remains on the main menu screen. Any help on this would hugely appreciated!

Best regards
Lisa

How does a Signal differ from a Wave

seshu

• Oct 20th, 2015

Signal satisfies Dirchelet's condition where as Wave does not satisfy.

Suarabh

• Sep 19th, 2015

Signal is the information which is to be transmitted but a wave is used to represent the signal

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Function
Number Functions to be discharged
#1. Prepare a list of students and their counselors
#2. Develop Enqueue() and Dequeue() routines
#3. Construct the Queue using the above enqueue routine
#4. Test the above Enqueue and Dequeue operations
#5. Develop the IsQueueEmpty() and IsQueueFull() routines
#6. Implement the DisplayQueue() routine

jeylaani

• Nov 24th, 2015

Biasing

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I am in my final year of collage in electronic engineering department of computer and I am confused about the final project any suggestions will help.

naval kishor

• Jan 18th, 2016

You can start on zigbee coordinator. It is the latest technology and easy to work

saim

• Sep 2nd, 2013

Make your own derbots with servomotor
searching soil to and indicate the alarm to extract

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Which of the following are used to display measured quantity by digital meter?LED,LCD,CRO?

Ravi shankar kumar

• Mar 20th, 2016

CRO

D SRI RAJA RAJESHWARI

• Mar 18th, 2016

CRO

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How does Solenoid 12v Valve work in DC voltage? Please Explain

Vinayak

• Mar 29th, 2016

There are two types of solenoid valves are present. 1. Normally Closed (NC) 2. Normally Opened (NO). Solenoid valve works on electro-mechanical principle. When 12 V DC voltage applied to solenoid ...

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Can you introduce a contact temperature sensor with 0.1 or 0.2 accuracy?

Why length of antenna is taken as one half of wavelength or one fourth of wavelength? Why not one eighth or one sixteenth?

Deepak Rawat

• May 13th, 2016

Because, increasing antenna size greater than lemda gives increase in number of side lobes in field pattern. Which is not a good thing from the view of antenna directivity.

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Hi Guys,

Give here your suggestion about microprocessor 8085 and 8086. These 2 processors used in old time. I want to know its program execution time, memory space.

Rakesh

• Jun 17th, 2016

As we know 8086up supports pipeline so it is faster than 8085up which is don't support pipeline. Due to 20 address line, 8086 has more memory space than 8085up which has 16 address line (1MB former, 64KB later)

suchithra

• May 1st, 2016

8086 can perform byte or word operation and available in 3 clock version

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Nivetha

• Jun 20th, 2016

BJT is a current controlled device, where Ib used to drive the BJT either ON or OFF, a MOSFET is a voltage controlled device, the gate voltage used to control the switching activity.

Harshitha P K

• May 7th, 2016

BJT is a current controlled device, where the base current (Ib) is used to drive the BJT either ON or OFF, whereas, a MOSFET is a voltage controlled device, the gate voltage is used to control the switching activities.

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