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If bandwidth of amplifier reduced then thermal noise in amplifier?
thermal noise willbe reduce
Common-mode rejection ratio of an ideal amplifier?
The common mode rejection ratio of an ideal amplifier is infinity.
What is an ideal size for a car amplifier?
The ideal size amplifier for a car is between 80 and 100 watts, otherwise if the consumer wanted more sound or more amps the amplifier must be larger watts capacity.
Define noise figure?
A noise figure is a scale of decibels.
What is common mode output voltage?
I assume you're referring to an amplifier circuit. In a differential amplifier, there are two inputs. The common mode output voltage is the output voltage that will result from the same voltage being applied to both inputs. Typically this is very low, as the common mode rejection ratio (CMRR) is very high in a differential amplifier. This is an ideal characteristic (high CMRR) as it means unwanted noise will not be amplified and potentially squelch out the desired signal; this is why a differential amplifier is used in high quality sound equipment. Three wires are used - a ground, and two signal wires that are opposite each other. Noise will inherently "hop on" the signal wires, but as they are close to one another, it is likely the noise will be nearly the same magnitude and sign on each wire. Since the amplifier CMRR is high, this noise does not propogate through the amplifier, while the original signal is amplified.
What is common mode voltage?
I assume you're referring to an amplifier circuit. In a differential amplifier, there are two inputs. The common mode output voltage is the output voltage that will result from the same voltage being applied to both inputs. Typically this is very low, as the common mode rejection ratio (CMRR) is very high in a differential amplifier. This is an ideal characteristic (high CMRR) as it means unwanted noise will not be amplified and potentially squelch out the desired signal; this is why a differential amplifier is used in high quality sound equipment. Three wires are used - a ground, and two signal wires that are opposite each other. Noise will inherently "hop on" the signal wires, but as they are close to one another, it is likely the noise will be nearly the same magnitude and sign on each wire. Since the amplifier CMRR is high, this noise does not propogate through the amplifier, while the original signal is amplified.
How the noise is overcome with the help of positive feedback amplifier?
A: With positive feedback the amplifier is saturated one way or the other in a quiescent state no signal or noise input can effects its output
Which device amplifies the incoming signal and noise?
Amplifier repeater
Why to have a filter before and after a low noise amplifier?
To cut off unwanted frequencies, unwanted frequencies are called noise.
Equivalent noise temperature of amplifier with noise factor of 1.04?
Te=(Fn-1)To where To=290K so answer is 11.6K
How do you explain about cascoded amplifier?
explain about effective input noise temperature.
Why noise of Low Noise Amplifier increases if you want to increase gain of it?
That is the case with all amplifiers. The noise floor is always lifted when the gain is increased.
