What is the bandwidth of an amplifier?

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What is the bandwidth of an amplifier?

asked Aug 20, 2021 by anonymous

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Last Answer : a. Narrowband—100 Hz to 100 kHz. b. Intermediate band—100 Hz to 500 kHz. c. Wideband—400 Hz to 2 mHz.

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Description : What two values may be used to determine the bandwidth of an fm wave?

Last Answer : The number of significant sidebands and the modulating frequency.

What determines the bandwidth of an AM transmission?

Description : What determines the bandwidth of an AM transmission?

Last Answer : The highest modulating frequency.

If C4 were removed from the circuit, what would happen to the output of the amplifier?

Description : If C4 were removed from the circuit, what would happen to the output of the amplifier?

Last Answer : The output would decrease. (C4 decouples R2 preventing degenerative feedback from R2.)

What components form the input-signal-developing impedance for the amplifier?

Description : What components form the input-signal-developing impedance for the amplifier?

Last Answer : C2 and the secondary of T1.

What two methods are used to compensate for the problems that cause low gain in an rf amplifier?

Description : What two methods are used to compensate for the problems that cause low gain in an rf amplifier?

Last Answer : . RF transformers are used and the transistor is neutralized.

What problem is caused in an rf amplifier by a loosely coupled transformer?

Description : What problem is caused in an rf amplifier by a loosely coupled transformer?

Last Answer : A too-narrow bandpass.

What is the most common form of coupling for an rf amplifier?

Description : What is the most common form of coupling for an rf amplifier?

Last Answer : Transformer coupling.

Can a parallel LC circuit be used as the frequency determining network for an rf amplifier?

Description : Can a parallel LC circuit be used as the frequency determining network for an rf amplifier?

Last Answer : Yes.

What is the purpose of a frequency-determining network in an rf amplifier?

Description : What is the purpose of a frequency-determining network in an rf amplifier?

Last Answer : To provide maximum impedance at the desired frequency.

If the output impedance of an amplifier circuit is decreased, what is the effect on the gain?

Description : If the output impedance of an amplifier circuit is decreased, what is the effect on the gain?

Last Answer : The gain decreases.

If the input-signal-developing impedance of an amplifier is increased, what is the effect on the gain?

Description : If the input-signal-developing impedance of an amplifier is increased, what is the effect on the gain?

Last Answer : The gain increases.

What component in an amplifier circuit tends to limit the low-frequency response of the amplifier?

Description : What component in an amplifier circuit tends to limit the low-frequency response of the amplifier?

Last Answer : The coupling capacitor (C3).

What components can be used to increase the high frequency response of an amplifier?

Description : What compone What components What components can be used to increase the high frequency response of an amplifier?

Last Answer : Peaking coils.

What is the major factor that limits the high-frequency response of an amplifier circuits?

Description : What is the major factor that limits the high-frequency response of an amplifier circuits?

Last Answer : The capacitance of the circuit.

What are the factors that limit the frequency response of a transistor amplifier?

Description : What are the factors that limit the frequency response of a transistor amplifier?

Last Answer : The capacitance and inductance of the circuit and the interelectrode capacitance of the transistor.

If current gain is required from an rf amplifier, what type of component should be used as an output coupling element?

Description : If current gain is required from an rf amplifier, what type of component should be used as an output coupling element?

Last Answer : A step-down transformer.

What are the upper and lower frequency limits of an amplifier?

Description : What are the upper and lower frequency limits of an amplifier?

Last Answer : The half-power points of a frequency-response curve. The upper and lower limits of the band f frequencies for which the amplifier is most effective.

When is degeneration tolerable in an amplifier?

Description : When is degeneration tolerable in an amplifier?

Last Answer : When it is necessary to prevent amplitude distortion.

In the basic transistor amplifier discussed earlier, what is the relationship between the polarity of the input and output signals?

Description : In the basic transistor amplifier discussed earlier, what is the relationship between the polarity of the input and output signals?

Last Answer : The signals are opposite in polarity or 180 degrees out of phase with each other.

What amplifier class of operation is the most inefficient but has the least distortion?

Description : What amplifier class of operation is the most inefficient but has the least distortion?

Last Answer : Class A.

What two primary items determine the class of operation of an amplifier?

Description : What two primary items determine the class of operation of an amplifier?

Last Answer : The amount of bias and the amplitude of the input signal