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Questions tagged [non-inverting]

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For questions about signal processing which does not invert the input.

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I need a single-supply non-inverting summing amplifier for DC signals. Because I do not have a negative supply available, the obvious solution of using standard op-amps as inverting amplifiers seems ...
Dwayne Reid's user avatar
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My following observations are: The opAmp feedback is connected with a Darlington pair. VBE drop across each BJT is ~0.7V. R1 and 𝑅2 form a voltage divider, which determines 𝑉𝑜𝑢𝑡. Is this correct? ...
Sannasi Chakravarthy S R's user avatar
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The preamp and tuner on my guitar died, so I decided to make a new one myself. For the moment I am focused on the preamp. This is my preamp design (Scroll Down For Revised, Possibly Functional Version)...
erikor's user avatar
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I'm using MCP6022 opamp to double the signal with non-inverting amplifier circuit. I feed the opamp with 5V and when I apply 2 volts, I expect 4 volts. on datasheet When I look at the data sheet of ...
Mert Krgx's user avatar
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Are there logic-level chipsets where the signals can be inverted or non-inverted with a common control pin? For example, a quad input/quad output IC with a common control pin where the outputs are non-...
paraparabolic's user avatar
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I'm designing a hobby project where I'm communicating analog data via a PLC. I want to convert the output of my MCU's DAC to a 0-10V signal using a noninverting opamp. I'm controlling the gain of the ...
jonif17's user avatar
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3 votes
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simulate this circuit – Schematic created using CircuitLab I am having trouble properly connecting an LM358N op amp to amplify a small AC signal. I tried connecting the positive side of my ...
manylya's user avatar
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I'm trying to solve this question for homework but they mentioned the first op amp is in negative feedback. How though? Is it because of the output of the second op amp (OA2) is also in negative ...
alxzhu's user avatar
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I'm using TL072 with the attached circuit in order to make a 3x gain. The AO2 signal comes from DAC of uC which is changing from 0 to 3.3V. But when AO2 is lower than 0.8V, the output signal (T_ref) ...
MHBagh's user avatar
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I have been using a 555 timer as a MOSFET non-inverting driver for a few months now. It really is a signal amplifier for an Arduino Nano (which outputs 5 V) and it amplifies the signal into the gate ...
soupflood's user avatar
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The question asks: "Exercise 14.5 Assume an ideal op amp and use the summing-point constraint to find an expression for the output current io in the circuit of Figure 14.14. Also find the input ...
Nitai Michalski's user avatar
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I need to find the Thévenin equivalent of the right side of the circuit by looking into node E and F. How can I find it?
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I am doing a simulation in multisim to simulate an non inverting amplifier, but i have gotten values that is not what intended. From what i know, the gain for non inverting amplifier is Va = 1 + Rf/...
randomnick's user avatar
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For a standard non-inverting amplifier as below: With nodal analysis, I got $$\frac {v_o} {v_i}=\frac {R_EZ_o+aZ_iR_E+aZ_iR_f} {R_ER_f + R_EZ_i + R_EZ_o + R_fZ_i + Z_iZ_o + R_EaZ_i}$$ However, with ...
Matt's user avatar
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This circuit is connected to 250V AC power and I would like to calculate the values ​​of the resistor and capacitor, but I don't know which formula to use to calculate it. I think this circuit is ...
Noting's user avatar
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I have a non-inverting amplifier circuit shown in picture. This circuit has an input wave (-/+ 5V) and output needs to be 0 to 3.3V. I'll be using zener diode (LM 385) as my voltage reference. But I ...
luffy's user avatar
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I'm trying to figure out the power supply values for a non-inverting Op amp circuit. So far I have: input voltage= .03 mV, Gain=11, and output voltage=330mV. I know my output voltage cannot exceed my ...
Leslie Alfaro's user avatar
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I thought that A = 1 + Rf/Ri for an op-amp non-inverting amplifier? With a 1mV input, I'm getting output voltages in the uVs...
Eli Y's user avatar
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I bought these TL072 (maybe TL072CD) IC amps, for a circuit I was trying to build, but the circuit wasn't working at all so I tried to troubleshoot the amp. I built a voltage divider ~1/1000 (on the ...
Jochen K's user avatar
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2 votes
1 answer
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I am trying to simulate the step response of an inverting integrator and a non-inverting integrator. However, in the inverting integrator's output (blue plot), I see an initial overshoot in the ...
P T Nandh Kishore's user avatar
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I have attached two opamp-based implementations of Schmitt trigger. Output of one will be inverted when compared with the output of the other circuit. Clearly, the difference is in which terminal the ...
MAJID AHMAD's user avatar
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The bandwidth of inverting opamp is lesser than non-inverting opamp. If both configurations have equal closed loop gain and also Gain-Bandwidth product (GBW) for opamp is constant for both cases (...
MAJID AHMAD's user avatar
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I made 4 preamp's for laptops and cellphones using 2 NE5532 IC's. The expected gain is 1.56 so, I used a 5.6K resistor as the feedback one and a 10K from the inverting input to a 47uF bipolar ...
Gabriel Santos's user avatar
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11 votes
4 answers
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Down below is an inverting op-amp circuit with a capacitor C connected to the non-inverting input. I have to find the voltage at point A and express it using vin, C and R. I tried to solve the ...
kauselis3000's user avatar
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2 answers
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I have this circuit: And I am asked to find the driving point impedance. I know that a driving-point impedance relates the voltage and current at a pair of terminals. The formula for the driving-...
karl karlsen's user avatar
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I have this circuit: I am asked to show that the transfer functions of the circuit is: I know that for non-inverting op-amps: \$ Z_{in}=\infty \$ \$ Z_{out}=0 \$ \$ H(s)=\frac{V_{out}(s)}{V_{in}(s)} ...
karl karlsen's user avatar
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I decided to quickly put together a circuit today but found an issue that has sometimes happened when making circuits with TL072. Briefly, the circuit is a non-inverting amp with about 34dB gain in ...
CouchAnalysis's user avatar
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Is it possible to use this single supply, non-inverting, summing op-amp configuration to sum multiple arbitrary DC voltages at unity gain? I've used the inverting summing op-amp config on bipolar ...
formerlolz's user avatar
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2 answers
192 views

I want to build a negative resistance converter and the only voltage source I have is a 5 V Arduino power pin. I am afraid the reverse current (Is) flowing through the power pin will destroy my ...
Reinhardt Walzer's user avatar
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3 votes
1 answer
996 views

Requires to read 24 V input signal, and output to an Arduino as 1, at the same time it lights up the LED indicator. Is this circuit viable?
Kenny Thum's user avatar
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3 answers
2k views

Can someone use this picture as an example of how to systematically solve/calculate this problem? My teacher has written terrible, inconsistent notes, and now I'm confused for which formulas to ...
asking's user avatar
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6 votes
5 answers
2k views

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?
Jina's user avatar
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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 ...
ryan's user avatar
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3 answers
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If I use just the first-stage op-amp it works, but the output from the first stage is 2.5 V. If I give it some signal the output will be 2-3 V. In the second stage I use a voltage divider and the ...
Viacheslav Popika's user avatar
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0 votes
2 answers
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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 ...
steevglez's user avatar
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3 votes
3 answers
881 views

Recently, I read here: Always inverting except when you can't Always adopt inverting, the reason for which is that noise can be reduced. Why? Could anyone explain in detail? I also have a problem. ...
curlywei's user avatar
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So I am trying to make analog output 0-10vdc with my esp32 microcontroller. I have read that esp can give true analog voltage cause it has DAC so my plan is to connect one of esp32 DAC pins to non ...
tuadru's user avatar
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5 votes
5 answers
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I’m trying to figure out if the following comparator circuit (TL331) would be reliable in the following application, or whether I would need to add anything, like hysteresis. To explain the ...
Turboduinoz's user avatar
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1 vote
1 answer
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I'm examining the datasheet of the OPA192. When the inverting input of op amp tied up the op amp output and if the non-inverting input of op amp had been floating, what would have happened the op amp ...
bcdyzi's user avatar
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2 answers
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I was solving a problem related to voltage follower in Fitzgerald's Basic Electrical Engineering, 5th ed., pages 458-459. The op-amp characteristics are (respectively open loop gain, open loop ...
Awe Kumar Jha's user avatar
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5 answers
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Circuit: I have to determine the relationship between Vout and Vin. When analyzing the circuit I realized it was quite similar to a non-inverting op-amp circuit. I know from my past homework that I ...
Sydon's user avatar
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0 votes
2 answers
256 views

I bought an LM358 amplifier module to boost the input signal of 0-1 Vpp 20 kHz sine signal to 0-3 Vpp 20 kHz sine signal (gain of 3.) I tested the circuit with the input pin (non-inverting pin) ...
micjor's user avatar
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5 votes
2 answers
551 views

My application requires 11 thermocouples to be sampled and logged. Below is the circuit diagram, containing a differential and common mode filter, non-inverting amplifier (gain 111) and a second order ...
AngusE's user avatar
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2 answers
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I'm an electronic engineering undergrad and your discussions helped me a lot. As a project, i was instructed to design the front end for a data acquisition system. The specs as below. Supply +/- 5V ...
HasithaCG's user avatar
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2 votes
2 answers
329 views

I am using a non inverting amplifier (shown below). For the opamp, I am using TL084, and I am using 12V single supply. I am getting an output of 11.20Vdc even though the input is 1.06V sine wave. I ...
Sam 's user avatar
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4 votes
4 answers
1k views

In most derivations of the output impedance of an (non-ideal) non-inverting opamp circuit, the input terminal is grounded (e.g. page 5/6 here or page 76 here). It also seems to be a common procedure ...
user246795's user avatar
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5 votes
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I have a question about this circuit. How do i rearrange the formula to calculate the voltage gain of this opamp with a transistor: I know the formula for the gain of a non-inverting opamp like in ...
Daan_1's user avatar
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2 votes
1 answer
242 views

I am providing 1.8 V as supply in a single supply voltage follower circuit. Now my concern is if I put negative voltage (Range -1.3 V to -500 mV) in the non-inverting pin, what will the output from ...
Shu's user avatar
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0 votes
1 answer
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I constructed a noninverting amplifier with a sine wave input (0.5 Vpp) and observed an output signal that was clipped equally in both the positive and negative regions, to about 2.5 Vpp. I tried to ...
Sparky47's user avatar
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0 votes
7 answers
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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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