Table of Contents
What are advantages and disadvantages of Class B amplifier?
Fig 5.3. 4 Crossover Distortion
Class B | |
---|---|
Advantages | Disadvantages |
Very low standing bias current. Negligible power consumption without signal. | Creates Crossover distortion. |
Can be used for much more powerful outputs than class A | Supply current changes with signal, stabilised supply may be needed. |
What is the disadvantage of Class A amplifier?
Disadvantages of Class A Amplifier Due to the large power supply and heat sink, class A amplifier is costly and bulky. It has Poor Efficiency. Due to the transformer coupling frequency response is not as good.
What is the major drawback of Class B operation and how it can be avoided?
These transistors can enter the active regions if and only if their base emitter junction is forward biased. This is major limitation of class B power amplifier. This limitation can be overcome by applying some small forward voltage to each transistor to increase the cut-in voltage.
What is the disadvantage of a class B push-pull amplifier?
The Class B amplifier circuit above uses complimentary transistors for each half of the waveform and while Class B amplifiers have a much high gain than the Class A types, one of the main disadvantages of class B type push-pull amplifiers is that they suffer from an effect known commonly as Crossover Distortion.
What is the disadvantage of a class B push-pull amplifier Mcq?
What is the disadvantage of a class B push-pull amplifier? Explanation: A class B amplifier helps increase efficiency, and the figure of merit reduces. The q power dissipation reduces and cross over distortion increases.
What is the disadvantages of a class B push pull amplifier?
Which is the main disadvantage of Class B amplifier Mcq?
Explanation: Class B amplifiers are more efficient compare to the class A amplifier because of good protection against noise effects. 5. Which is the main disadvantage of class B amplifiers? Explanation: Since class B amplifier uses a balanced centre-tapped transformer in its design, making it expensive to construct.
What is the disadvantage of a class B push pull amplifier Mcq?