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How do you calculate gain of an inverting and non-inverting OP-Amp configuration?
Wiki User
∙ 12y ago
gain in an op-amp is the output voltage divided by input voltage.
for the inverting amplifier , gain(Av)=-(Rf/Ri) ,where Rf => resistance of the feedback path & Ri=> inverting input terminal resistance
for the non-inverting amplifier , gain(Av)=(1+(Rf/Ri)) , where Rf => same & Ri=> non inverting input terminal resisance
Wiki User
∙ 12y ago
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Why terminals of opamp are called as inverting and noninverting?
In an op-amp, an input on the inverting terminal drives the output in the opposite direction, while an input on the non inverting terminal drives the output in the same direction. In a normal closed loop negative feedback configuration, there is feedback from output to inverting input, so that the output becomes a known function of input. So long as you stay within limits, the output will go to whatever value is required to make the inputs be the same.
Why voltage gain is high in op amp?
A practical opamp is designed to approach the characteristics of the ideal opamp as closely as possible. The open loop voltage gain of an ideal opamp is infinite, so while this is actually impossible to achieve practical opamps are built with as high an open loop voltage gain as possible.
Which of following OP amp is used to strengthen the week signal?
741 opamp
What is the applications opamp buffer circuit?
An opamp buffer circuit is one where the input signal is connected to the plus input, and the output is connected to the minus input. Within the performance limitations of the opamp, the output will track the input. The advantage of the buffer circuit is that is presents very little load impedance to the input signal, while providing a low impedance from the output to drive whatever circuitry is connected there.
What is the meaning of l in lm324?
Possibly Linear, in which case it means analog. The LM324 is an opamp.
Why terminals of opamp are called as inverting and noninverting?
In an op-amp, an input on the inverting terminal drives the output in the opposite direction, while an input on the non inverting terminal drives the output in the same direction. In a normal closed loop negative feedback configuration, there is feedback from output to inverting input, so that the output becomes a known function of input. So long as you stay within limits, the output will go to whatever value is required to make the inputs be the same.
Give the definition of output offset voltage of Op-Amp?
The output voltage of a opamp when the input of inverting and non inverting terminals are grounded
Find the output waveform of op amp when inverted input terminal connected to a ground and a sinusoidal signal of 4 v peak at non inverting input?
In this configuration the opamp basically works as a non inverting comparator. During the positive cycle of the waveform the output will saturate to positive Vcc, while during the negative cycle the output saturates to negative Vcc. Therefore the output waveform is a square wave with amplitude equal to the supplies and period equal to the input waveform.
What is the output when both the inverting and non inverting terminal of opamp is on same voltage in open loop configuration?
Ideally, the output voltage should be zero when the two inputs are equal to each other. Generally, an offset null adjustment is provided to do that - you short the two inputs together, and adjust the null for zero output. You just have to be careful, because high performance op-amps can "see" even the short sections of wire used for the jumper and treat that as an inductor, creating an RF oscillator. High frequency rolloff compensation usually is added to prevent this.
Similarity between opamp and comparator?
A comparator is simply an opamp with a certain configuation of external circuitry ( a few components) that make it function as a comparator.
Is IC741 a hybrid ic?
no, the 741 opamp is a monolithic IC.
IC 741 is an?
It is an opamp chip consisting of 8 pins
Why voltage gain is high in op amp?
A practical opamp is designed to approach the characteristics of the ideal opamp as closely as possible. The open loop voltage gain of an ideal opamp is infinite, so while this is actually impossible to achieve practical opamps are built with as high an open loop voltage gain as possible.
Where is the ground on an operational amplifier?
An opamp has a ground terminal on one of the pins.
What is offset null in lm741?
When using the LM741, one of the inputs will have a bias (usually non-inverting input), which means the output can never be 0 V. If a 0 V output is needed, you need to offset the bias. To do this, you can connect both inputs to two 1K resistors in parallel, or both inputs to either side of a 10K potentiometer. This will allow an output of 0 V from the opamp.
Which of following OP amp is used to strengthen the week signal?
741 opamp
What is the applications opamp buffer circuit?
An opamp buffer circuit is one where the input signal is connected to the plus input, and the output is connected to the minus input. Within the performance limitations of the opamp, the output will track the input. The advantage of the buffer circuit is that is presents very little load impedance to the input signal, while providing a low impedance from the output to drive whatever circuitry is connected there.
