Questions tagged [operational-amplifier]
Questions relating to the construction and applications of operational amplifiers, which are DC-coupled, high-gain electronic voltage amplifiers with a differential input and, usually, a single-ended output.
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Strange asymmetric saturation with ADA4099
Good afternoon — my first question here, I hope I follow all the rules...
So, I am trying to design a series of filters with op-amps that have a shutdown pin, using only 0 → 3.3V supply and an analog ...
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Audio amplifier for a physics experiment, how do I make it? [closed]
The experiment includes a mic taking in sound(2KHz-4KHz) and sending it to a DSO. I need an audio amplifier circuit in between that to amplify the signal so it would be visible properly. The ...
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What type of amplifier circuit do I need to drive a piezoelectric ultrasound transducer?
I would like to drive the following piezoelectric transducers at 200 V or their maximum voltage (60-1000 V):
https://www.manorshi.com/16mm-Dog-Repellent-Ultrasonic-Transducer-25khz-Detect-Sensor-...
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TL072CP non inverting circuit doesn't amplify
I am using TL072CP op amp in inverting mode to amplify guitar signal.
This is the circuit I have made:
I assembled it and even when changing resistors of different values and trying out different ...
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How to simulate for the Gain of opamp Bridge Differential Amplifier?
Hi experts,
I have this circuit, with a bridge connected to an op-amp in differential form, and I want to simulate it for the Gain of the circuit in PSPICE.
I have found it's gain by hand, which comes ...
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1
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Audio Codec Input/Output Channel Stages
I am planning to build a PCB for a Eurorack Modular Synthesizer, incorporating an STM32 for DSP and a bidirectional Audio Codec like the TLV320AIC3104 to handle the ADC/DAC.
Eurorack audio signals ...
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Infinite output impedance in amplifier, instead of 0?
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 ...
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Applying KVL in op amp with floating source
From my understanding, the solution first applies the summing point constraint even though there is no ground on the non-inverting input, leading to 0V on both inputs. But how do they apply KVL across ...
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Is it correct to apply KVL through the 2 inputs of an op amp?
The question asks; "P14.25 Analyze each of the ideal-op-amp circuits shown in Figure P14.25 to find expressions for 𝑖𝑜. The top part is the question, the bottom is the solution from the ...
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How are opamp node voltages being set in the following circuit and what is the use of the diode configuration?
I am using a PCB which has the following opamp configuration implemented. It's supposed to be a precision buffer for the source V3. I accidentally connected the source V4 as well and observed strange ...
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Issues with ICL7660 ICs from eBay - Overheating and Failure
I recently purchased several cheap ICL7660 ICs from eBay to use in an OpAmp circuit. Unfortunately, I've encountered issues with these components, specifically overheating and subsequent failure.
Here ...
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What is the maximum dBu I can send into a microphone input in this schematic?
The schematic below is from the Icom 9700 radio service manual (page 80). I would like to feed this input from a mixer board's ALT-3/4 outputs, and I want to avoid blowing the TS462 microphone preamp ...
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Part name of this IC - "LLA#537"
I want to know the part numbers of the components marked as shown in the attached image.
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Part name of this IC - Analog Devices, 8-pin, "S 6B" A 06" "C 42"
I want to know the part numbers of the components marked as shown in the attached image.
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Need help analyzing sability of op-amp in a current source in LTSpice
I have to perform stability analysis on an op-amp (AD8671) which is being used as an op-amp in the circuit attached. I am using LTSpice to perform this. My approach is to give a 1V AC small signal at ...
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