Questions tagged [non-inverting]
For questions about signal processing which does not invert the input.
20 questions
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Why is CMRR effect multiplied by gain in this non inverting op amp configuration?
In this document Vout of a non inverting op amp is given as follows:
But why \$\frac{V_{in}}{CMRR} \$ is also multiplied by the gain?
I would write it as:
\$ V_{out} = \big[1 + \frac{R2}{R1} \big] \...
- 2,153
2
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1
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Confusion with output impedance of non-inverting and inverting opamp circuit
I'm trying to understand why the output impedance of non-inverting and inverting opamp circuit is almost zero. I found the following text on the derivation:
β is the closed loop gain above. But I ...
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7
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How does this op-amp config work as a voltage follower?
I've checked a couple of books and the internet, but every source just tells me it's a voltage follower, and not why. Without any resistors, I'm having trouble applying the 2 golden rules of opamps (...
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Why put a resistor in series with the positive terminal in a non inverting op-amp circuit?
I've tried to find the answer, but failed.
Why do we add R1 in series with the positive terminal for a non-inverting amplifier? What is the best value we can assume or choose for it?
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Why do we need R1 in a non-inverting op-amp?
I am quite new to learning op-amps.
What is the purpose of putting R1 there? Does this have any meaning in the design of a microphone amplifier?
I read about this from another answer, which says that ...
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6
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5
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Non-inverting op-amp
Why is resistor R1 connected to the inverting terminal of the op-amp in a non-inverting op-amp configuration? What will happen if we replace it with a short circuit?
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Is it possible to make a non-inverting amplifier with positive feedback?
The 'classic' non-inverting amplifier configuration uses negative feedback. What happens when the + and - terminals are switched? Based on my pencil-and-paper analysis and a Circuitlab simulation, it ...
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2
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Amplify µC output from 5V to 12V for external IC that needs 12V to control without inverting
Does the following circuit boost the power of an arduino output (Arduino Mega 2560) from the 5V of the Pin to the 12V that I need to control a Wireless Transmitter Module without Inverting it?
Can I ...
- 356
2
votes
2
answers
3k
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Transfer function of an op-amp circuit
Let's suppose the following circuit:
I am trying to find a relation between Vs, V1 and V2 in this circuit. Please note that Vs is measured in relation to ground. I have declared some extra points (A,...
- 237
0
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1
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Limit the current draw from Op-Amp
Following up on this question I redesigned my circuit with the suggestions from the comments (see comments from @Andy_aka). I want to drive the output of the opamp between 0-24V with an Vin = 0-10V. I ...
- 415
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2
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Scale and Shift Analog Voltage with a Single Op Amp?
I am looking to map the output voltage from the onboard DAC of an Arduino Due from its raw range [+0.54V --> +2.75V] into the new range [-10V --> +10V]. I will use an op amp with -12V and +12V power ...
- 757
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7
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OpAmp: inverting and non-inverting amplifier both amplify the signal, how to know which one to use?
Both the inverting amplifier and non-inverting amplifier use negative feedback. Both provide gain. But one inverts the signal while the other does not. How to know which one to use? Are there ...
- 12.4k
2
votes
2
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Non-ideal Non-inverting op amp
This is probably more of an algebra question.
I do not understand where the "1"s come from in equation 1.10 given the much simpler voltage divider equation in the line just above it. And why ...
- 891
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1
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Op amp output voltage offset too high
While building an opamp based non-inverting amplifier for my project I noticed that it always has some considerable output voltage despite having the input at zero. To verify that problem I built the ...
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3
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Circuit analysis of op amp non-inverting integrator
I've been trying to figure this out for a while to no avail. Could someone help me out?
So far I've tried computing KCL around a couple of different nodes but wasn't able to get a model describing the ...
- 1,191
1
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1
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Non-inverting op-amp with DC offset
I'm trying to amplify an AC wave (from an audio input) with a maximum amplitude of about 1.8v to a DC oscillation between 0V and 5V with the centre (what would be the zero-crossing on the input) at ...
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2
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Non-inverting amplifier with stable gain
I'm working with a LM358 op-amp as a non-inverting amplifier to get a 0-24 V output from a 0-5 V input. When the input is 1.5 to 5 V, the gain is 4.8 which is OK (set by resistors), but below 1.5 V ...
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0
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1
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Non-inverting op-amp output problem
I have built very basic non-inverting op amp circuit and for some reason it outputs just 4V DC line instead of amplified sine wave. It happens only on breadboard, simulation works ok. I'm pretty sure ...
- 1,246
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2
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How to operate Op-Amp[OP07CP] with 0-5v supply?
I don't know why I cannot operate Op-Amps! this is my second circuit and I'm trying to make a non-inverting amplifier by an OP07CP. This is my circuit + an example of measured values:
simulate this ...
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transfer function of non-inverting op.amp circuit
I am trying to find the transfer function H(s)= Vo(s)/R2(s) but i am struggling to get it. I am assuming an ideal op-amp. V+=V- and that no current flows through the pins op the op.amp.
simulate this ...
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