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learningaboutelectronics.com/Articles/Voltage-follower

What is a Voltage Follower? A voltage follower (also called a unity-gain amplifier, a buffer amplifier, and an isolation amplifier) is a op-amp circuit which has a voltage gain of 1.. This means that the op amp does not provide any amplification to the signal. The reason it is called a voltage follower is because the output voltage directly follows the input voltage, meaning the output voltage ...

en.wikipedia.org/wiki/Operational_amplifier_applications

Voltage follower (unity buffer amplifier) Used as a buffer amplifier to eliminate loading effects (e.g., connecting a device with a high source impedance to a device with a low input impedance). = = ∞ (realistically, the differential input impedance of the op-amp itself (1 MΩ to 1 TΩ), multiplied by the open-loop gain of the op-amp) Due to the strong (i.e., unity gain) feedback and certain ...

en.wikipedia.org/wiki/Buffer_amplifier

If the voltage is transferred unchanged (the voltage gain A v 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 ...

hyperphysics.phy-astr.gsu.edu/hbase/Electronic/opampvar2.html

The voltage follower with an ideal op amp gives simply. but this turns out to be a very useful service, because the input impedance of the op amp is very high, giving effective isolation of the output from the signal source.

reviseomatic.org/help/s-op-amp-advanced/Op Amp Voltage...

The voltage follower does not amplify the voltage but the output current can be much higher than that of the original circuit. Vout = Vin; Vout / Vin = 1; The input resistance is equal to that of the op-amp. (Close to infinity). The output resistance is low (Close to zero). In reality it depends on the op amp and values near 200 Ohms are common.

www.analogictips.com/voltage-follower-unity-gain-amplifier...

A voltage follower is also known as a unity gain amplifier, a voltage buffer, or an isolation amplifier. In a voltage follower circuit, the output voltage is equal to the input voltage; thus, it has a gain of one (unity) and does not amplify the incoming signal.

circuitdigest.com/.../voltage-follower-circuit-using-op-amp

Voltage Follower is simply a circuit in which output follows the input, means output voltage remains same as input voltage. It is also commonly known as Unity gain Opamp Amplifier or Opamp Buffer.Here we construct a voltage follower using Opamp LM741 and see how its output follows the input. We already discussed about it in our Non-inverting Operational Amplifier tutorial, here we will build ...

www.quora.com/What-is-the-use-of-a-voltage-follower

Voltage follower also know as buffer amplifier is a device which connects high impedance circuit to low impedance circuit. The gain of voltage follower is unity i.e. Av= 1. In Voltage follower, the output signal follows the input signal meaning th...

www.electrical4u.com/voltage-follower

Voltage follower is an Op-amp circuit whose output voltage straight away follows the input voltage. That is output voltage is equivalent to the input voltage. Op-amp circuit does not provide any amplification. Thus, voltage gain is equal to 1. They are similar to discrete emitter follower. The other names of…

www.mycircuits9.com/2012/12/voltage-follower-using-op-amp.html

To obtain the voltage follower from the noninverting amplifier, simply open the input resistance R1 and short the feedback resistor Rf. Figure shows the circuit diagram of a VOLTAGE FOLLOWER, in which the output voltage is fed back to the inverting terminal of operational amplifier (op amp); consequently the gain of the feedback circuit is 1.