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A: Voltage follower imply that the output will follow the input without any gain.
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∙ 13y ago
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What is voltage follower?
A voltage buffer amplifier is used to transfer a voltage from a first circuit, having a high output impedance level, to a second circuit with a low input impedance level.If the voltage is transferred unchanged (the voltage gain Av is 1), the amplifier is a unity gain buffer; also known as a voltage follower because the output voltage follows or tracks the input voltage. Although the voltage gain of a voltage buffer amplifier may be (approximately) unity, it usually provides considerable current gain and thus power gain
What is the Primary function of a voltage follower circuit?
Its purpose is to provide approximately the same voltage to a load as what is input to the amplifier, but at a much greater current. In other words, it has no voltage gain, but it does have current gain.
What is the advantage of emitter follower?
The advantage of the emitter follower is that it has a positive gain of 1.
What is voltage gain?
Voltage gain is the ratio of the output voltage of an amplifier to its input voltage.
Explian the working of a common-source amplifier and a common drain amplifier?
Configuration Voltage Gain Current Gain Input Resistance Output Resistance Common- Source AV >1 - ∞ Moderate to high Source-Follower AV ≈ 1 - ∞ Low Common- Gate AV > 1 Ai ≈ 1 Low Moderate to high Both the common-gate and common source has voltage gain of greater that 1 compared with the voltage gain of source- follower which is less than or approximately equal to 1 . The input resistance of both common-source and source follower is high typically ranges from kilo ohms and above while common-gate has a low input impedance ranges from hundred ohms or below. The output resistance of both common-gate and common-source are dominated by RD while source follower has low output impedance and is not dominated by RD
What is the voltage gain and current gain for a voltage follower?
In a voltage follower, voltage gain is 1, with an offset of VB-E, and current gain is hFe, limited, of course, by the available current in the supply and by the rating of the transistor.
What is Voltage gain of emitter follower?
The voltage gain of an emitter follower is theoretically 1. In practice, due to losses, it is marginally less than one.
What is a voltage follower Op-amp?
It is an amplifier that has no gain or a gain of one mainly used for isolation .
An emitter follower has a voltage gain that is?
.7v less than unity for DC operation but unity for AC.
What is voltage follower?
A voltage buffer amplifier is used to transfer a voltage from a first circuit, having a high output impedance level, to a second circuit with a low input impedance level.If the voltage is transferred unchanged (the voltage gain Av is 1), the amplifier is a unity gain buffer; also known as a voltage follower because the output voltage follows or tracks the input voltage. Although the voltage gain of a voltage buffer amplifier may be (approximately) unity, it usually provides considerable current gain and thus power gain
What is the Primary function of a voltage follower circuit?
Its purpose is to provide approximately the same voltage to a load as what is input to the amplifier, but at a much greater current. In other words, it has no voltage gain, but it does have current gain.
Which transister is used in emitter follower circuit?
A: Any transistor of either polarity can be used as an emitter follower, The purpose of an emitter follower is to provide current to the load since it cannot provide any voltage gain
What is need of voltage follower circuit?
It's a buffer circuit - it provides a high impedance input, and low impedance output with ~ unity gain. If you have a circuit that cannot drive much power, you can use a voltage follower to help. Also, if the input or output of a circuit needs to stay a specific value, such as with filters, you can easily control this due to the isolation the voltage follower provides.
How does the inverting amplifier differs from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
How does the non inverting amplifier differs from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
How does the non-inverting amplifier differ from voltage follower circuit?
altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.
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.
