When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?

well, It is a measure of degradation of the signal to noise ratio SNR, caused by components in the RF signal chain. The noise figure is the ratio of the output noise power of a device to the portion thereof attributable to thermal noise in the input termination at standard noise temperature T0 usually 290 K. The noise figure is thus the ratio of actual output noise to that which would remain

The i/p S/N ratio of system is 50 and the o/p S/N ratio is 5 the noise figure is - a 250 b 55 c 10 d 45

well, well, Noise Figure is defined as the ratio of signal to noise ratio at the output to that at the input. In other words,NF= s/ni/s/noWhere s/nI is the signal to noise ratio at the input, and s/no is the signal to noise ratio at the output of the device under test. Note that s/n at the output will always be smaller than the s/n at the input, due to the fact that any circuit will only add to the noise

What is digital signal processing ?

between human-made signals,which are orderly, and noise, which is inherentlychaotic.All communications circuits contain some noise.This is true whether the signals are analog or digital,and regardless of the type of information conveyed. Noise is theeternal bane of communications engineers, who are always strivingto find new ways to improve the signal-to-noise ratioin communications systems. Traditional

When I turn on my computer it is very noisy, with clicking and grinding, is my system going to break?

Hard disk drives make a certain amount of noise when programs are trying to get information or read data from the drive.So you might expect to hear a faint, grinding noise when the computer is reading data from the hard drive.However, the noise should not be too loud. An unusually loud noise signals that there might be something wrong with your hard drive, and you should call your FSP

What is the difference between repeater and amplifier?

well;a repeater IS an amplifier...amplifying the input signal out to the other side. However, repeaters also amplify noise as well therefore limiting the number of repeaters used in any given network segment. Intelligent repeaters and bridges will amplify signal, but without the noise...the signal being regenerated before sending....a repeater IS an amplifier...amplifying the input signal out

Who was one of the original founders for the Intel corporation?

founding, Gordon Moore and Robert Noyce wanted to name their new company "Moore Noyce". This name, however, sounded remarkably similar to "more noise" an ill-suited name for an electronics company, since noise is typically associated with bad interference. They then used the name NM Electronics for almost a year, before deciding to call their company INTegrated ELectronics or "

give me logic of brightness,contrast,autocolor effect of image in VB.NET & also history of image processing

Lightness, Brightness, Contrast, Diffuse, Emboss, FocalBW, Gamma, InvertColor, Monochrome, Noise, SharpenEdge adjustment, AntiNoise and more effects. Loading and printing BMP, GIF, ICO, JPEG, JPEG 2000, PCX to multipage true color PDF. Support Lightness, Brightness, Contrast, Diffuse, Emboss, FocalBW, Gamma, InvertColor, Monochrome, Noise, SharpenEdge adjustment, AntiNoise and more effects. Loading and printing BMP

my pc makes noise while booting&also while running.but the serviceperson does not seem to think it needs to be set right.plexplain

First check the noise from where it is coming . IT is from smps fan,cpu fan or hard disk sound . IF is is any of fans problem then replace them. Or if it is hard disk sound then some old hard disk gives sound but if it is new hard dsik the tere is problem in yor hard disk . replace it ....Below is a listing of components within the computer that may cause unusual noises to be generated. To determine

My computer is making a loud noise that sounds like a fan going bad. A friend told me I should replace the power supply. Can i install myself,pl guide

are there.4. After cleaning, clean the rest with a brush but rub it too much on ram or components, as static might damage it.5. Run the CPU without side covers and check for noise there should not be after cleaning but if still noise is there, hopefully from smps, then again remove power.6. There will be several cables from SMPS a to motherboard b Hard diskc to floppy drive d to Cd and DVD drives.7. You have

Define the term Low noise Block down converter?

A low-noise block converter LNB, for low-noise block, or sometimes LNC, for low-noise converter is used in communications satellite usually broadcast satellite reception downlink. The LNB is usually....A low-noise block converter LNB, for low-noise block, or sometimes LNC, for low-noise converter is used in communications satellite usually broadcast satellite reception downlink. The LNB is usually fixed

Define the term Low noise Block down converter?

A low-noise block converter (LNB, for low-noise block, or sometimes LNC, for low-noise converter) is used in communications satellite (usually broadcast satellite) reception (downlink). The LNB their signals. Answered by: Aditya.S at 9:13 PM on November 12, 2007 | Aditya.S's Q & A | Report Abuse Rate this : 0 0... The abbreviation LNB stands for Low Noise Block. It is the device on the front of a

Why a air plane didnt make a noise in the night but make noise in the day time?

its bcoz night humidity high ,so speed of sound lowerso it reach us later with lower amplitude

My Chevrolet spark is 5 months old. There is already some rattling noise from the back dickie door and a metalic clanging noise from the rear left hand side.?

Noise affects all the signals which are there in air.There are some communicating modulation techniques.Noise affects which of the modulation technique the most

My smps is making a noise and getting heated up I want to make sure that it should not make any noise while starting up, I have cancelled all the services of au

change the smps fan then it will be clear