For Cascode amplifier the output impedance becomes

For Cascode amplifier the output impedance becomes 
by

1 Answer

Answer :

For Cascode amplifier the output impedance becomes very high

by

Related questions

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Last Answer : C) Cascode amplifier

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Description : An amplifier without feedback has a voltage gain of 50, input resistance 1kΩ and output resistance of 2.5kΩ. The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 would be: (1) 1/11 kΩ (2) 1/5 kΩ (3) 5 kΩ (4) 11 kΩ

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An operational amplifier has an open loop gain of 200,000. Its output exhibits saturation at 10V.

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

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Last Answer : Negative feedback in an amplifier is accompanied by Gain less sensitive to component variations 

What is the importance of negative feedback in the operational amplifier?

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Last Answer : The voltage difference between the input terminals is maintained at a very small value

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Last Answer : The closed-loop voltage gain of an inverting amplifier equal to The feedback resistance divided by the input resistance.

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Last Answer : When the initial slope of input sine wave is greater than the slew rate of an OPAMP, the output: Approaches to triangular waveshape

A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, what is the antenna current at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Description : A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, ... at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Last Answer : D. 2.0 A

Calculate the noise figure of the receiver whose RF amplifier has an input resistance of 1000Ω and an equivalent shot-noise resistance of 2000Ω, a gain of 25 and load resistance of 125 kΩ. Given that the bandwidth is 1.0MHz and the temperature is 20˚C, and that the receiver is connected to an antenna with an impedance of 75Ω. A. 30.3 B. 3.03 C. 303 D. .303

Description : Calculate the noise figure of the receiver whose RF amplifier has an input resistance of 1000Ω and an equivalent shot-noise resistance of 2000Ω, a gain of 25 and load resistance of 125 kΩ. Given that the bandwidth is 1. ... to an antenna with an impedance of 75Ω. A. 30.3 B. 3.03 C. 303 D. .303

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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.

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.

ECL is the fastest of all logic families. High Speed in ECL is possible because transistors are used in difference amplifier configuration, in which they are never driven into ............... (1) Race condition (2) Saturation (3) Delay (4) High impedance

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Last Answer : Answer: 2  Explanation: Emitter-coupled logic (ECL) is the fastest of all logic families and therefore is used in applications where very high speed is essential. High speeds have become ... configuration, in which they are never driven into saturation and thereby the storage time is eliminated.

In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes more efficient at lower capacitance. C. the arrangement allows the coupling of the signal while it isolates the biasing of each stage. D. good frequency response.

Description : In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes ... of the signal while it isolates the biasing of each stage. D. good frequency response.

Last Answer : Answer: C

Operational amplifiers, used primarily in analog circuits, are characterized by ____________. A. high input impedance, high gain and low output impedance B. high input impedance, high gain and high output impedance C. low input impedance, low gain and high output impedance D. low input impedance, high gain and low output impedance

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Last Answer : Answer: A

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Last Answer : D. load connected to the output end of a transmission line

Characteristics impedance of a transmission line is the impedance measured at the ___________ when its length is infinite. A. input B. shorted end of the line C. output D. midsection

Description : Characteristics impedance of a transmission line is the impedance measured at the ___________ when its length is infinite. A. input B. shorted end of the line C. output D. midsection

Last Answer : A. input

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Description : What impedance relationship between the output of one circuit and the input of another circuit will provide the maximum power transfer?

Last Answer : Equal impedance.

What happens to output when a tri-state circuit is selected for high impedance.

Description : What happens to output when a tri-state circuit is selected for high impedance.

Last Answer : Output is disconnected from rest of the circuits by internal circuitry.

For JK flipflop J = 0, K=1, the output after clock pulse will be (A) 1. (B) no change. (C) 0. (D) high impedance.

Description : For JK flipflop J = 0, K=1, the output after clock pulse will be (A) 1. (B) no change. (C) 0. (D) high impedance.

Last Answer : Ans: C J=0, K=1, these inputs will reset the flip-flop after the clock pulse. So whatever be the previous output, the next state will be 0.