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Why output voltage in common base amplifier is in phase to input voltage?
The output of a common emitter stage is inverted, it is not out of phase.
Why in common collector amplifier however you change value of resistance not amplifier in voltage?
The question does not quite make sense. It sounds like you are asking why does changing the emitter resistor in a class C common collector amplifier not affect the output voltage? If so, the answer is that the common collector is an emitter follower, meaning that the emitter will follow the base, less the base-emitter junction voltage, within the limits of hFe. The resistor is simply there to ensure output biasing when the base voltage goes low.
What are the disadvantages of using common emitter amplifier?
Disadvantages of CE amplifier:1. It has a high output resistance.2. It responds poorly to high frequencies.3. It has high thermal instabilities.4. It's voltage gain is very unstable.
Is the common source amplifier is out of phase?
Yes, the common source amplifier is out of phase. It inverts the input signal, meaning that when the input voltage increases, the output voltage decreases, and vice versa. This phase shift is a characteristic feature of common source configurations in field-effect transistors (FETs) and bipolar junction transistors (BJTs).
What are Factors that determine voltage gain of an amplifier?
The voltage gain of an amplifier is determined by several key factors, including the amplifier's design and configuration (such as common emitter or common source), the values of its components (like resistors and capacitors), and the characteristics of the active devices (transistors or operational amplifiers) used. Feedback mechanisms, both negative and positive, can also significantly influence the gain by stabilizing or enhancing it. Additionally, the load impedance connected to the amplifier affects its voltage gain, as it interacts with the output stage of the circuit.
Main use of a Common base transistor amplifier is?
as voltage amplifiercurrent followeri am yoges
Application of a common - collector amplifier circuit?
Common collector amplifier can be used as a voltage buffer and in impedance matching
Why common emitter amplifier gives phase reversal?
A: Because it is a voltage amplifier the current will inversely reflect the voltage across a resistor
What is the Frequency response of common emitter amplifier?
The voltage gain is a measure of the amplified output available at the collector terminal divided by the voltage measured on the base. This if you have 10 mV applied to the base and voltage of 1 volt at the collector the voltage gain is 100ANSWERThe maximum voltage gain of a common emitter amplifier is dependant on the transistor itself. Some have only a very small voltage gain such as in Radio Frequency Power transistors. These are almost all used as common emitter circuits for bipolar transistors or common source for FETs.. On the other hand some darlington transistors can have common emitter gains of hundreds of thousands. If the stage has an unbypassed emitter resistor, the voltage gain is equal to Rload/RE, (Rload is the parallel value of the resistance from collector to the supply and the resistance of the load).If the emitter resistance is bypassed, the value of resistance to be used for RE is the internal Re which is equal to 25mV/Ie
Why output voltage in common base amplifier is in phase to input voltage?
The output of a common emitter stage is inverted, it is not out of phase.
Which bjt transistor amplifier can be used as a voltage buffer?
the common collector can use as voltage buffer
What are the advantages and disadvantages in using common collector amplifier?
Current gain. At the cost of no voltage gain.
Main use of a Common collector transistor amplifier is?
No voltage gain
The voltage of a given common source JFET amplifier is depend on what?
amplification factor
What is effect of load on voltage gain of common emitter amplifier?
it makes sound :) trollolololol
Why in common collector amplifier however you change value of resistance not amplifier in voltage?
The question does not quite make sense. It sounds like you are asking why does changing the emitter resistor in a class C common collector amplifier not affect the output voltage? If so, the answer is that the common collector is an emitter follower, meaning that the emitter will follow the base, less the base-emitter junction voltage, within the limits of hFe. The resistor is simply there to ensure output biasing when the base voltage goes low.
Why voltage gain of a common collecter amplifier is 1?
actually it is slightly less than 1, due to base-emitter forward bias voltage.
