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

1 Answer

Answer :

Peaking coils.

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Last Answer : The capacitance of the circuit.

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Last Answer : The coupling capacitor (C3).

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

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Last Answer : Answer: C

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Last Answer : The need of multistage amplifier The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in ... to use a MULTISTAGE AMPLIFIER .  Frequency response of R-C coupled amplifier.

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Last Answer : Yes.

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

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

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.

Description : What is the frequency classification of a magnetic amplifier

Last Answer : An audio (or low) frequency power amplifier.

Description : In a nondegenerative parametric amplifier the difference between the input frequency and the pump frequency is called what?

Last Answer : Idler- or lower-sideband frequency.

Description : The pump signal frequency must be of what value when compared to the input signal of a simple parametric amplifier?

Last Answer : Exactly double the input frequency.

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Last Answer : a. A too-high or too-low bias signal level setting for the record head. b. An improper reproduce head gap. c. An improper tape transport speed. d. Poor tape-to-head contact.

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Last Answer : The upper and lower limits of the frequency response specification for that tape recorder.

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Last Answer : The recorder can record all frequencies between 150 Hz and 150 kHz at 60 ips without varying the output amplitude more than 3 dB.

Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?

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Description : Name the modulation system in which the frequency alternates between two discrete values in response to the opening and closing of a key?

Last Answer : . Frequency-shift keying.

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Last Answer : Answer: B

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

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

Last Answer : A too-narrow bandpass.

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Last Answer : The gain decreases.

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Last Answer : The gain increases.

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Description : What is the bandwidth of an amplifier?

Last Answer : The difference between the upper and lower frequency limits of an amplifier.

Description : When is degeneration tolerable in an amplifier?

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

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

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

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Description : The input and output signals of a JFET amplifier have what phase relationship?

Last Answer : They are 180 degrees out of phase.

Description : What is used to bias a magnetic amplifier so that the control winding remains free to accept control (input) signals?

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Description : What is the purpose of the rectifier in a magnetic amplifier?

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Description : Can a summing amplifier have more than two inputs?

Last Answer : Yes, a summing amplifier can have as many inputs as desired.

Description : What is the difference between a summing amplifier and an adder circuit?

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Description : If the unity-gain point of the operational amplifier used in question 24 is 500 kilohertz, what is the bandwidth of the circuit?

Last Answer : 50 kilohertz (Gain = 10; Gain-Bandwidth Product = 500,000) 500,000(Hz)

Description : In the inverting configuration, what is the voltage (for all practical purposes) at the inverting input to the operational amplifier if the input signal is a 1-volt, peak-to-peak sine wave?

Last Answer : 0 volts.