Questions tagged [dc-offset]
The dc-offset tag has no usage guidance.
20
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Combined ADC scaling and offset with variable input voltage ranges
I am trying to create a circuit which will allow me to scale and offset a voltage (be it AC or DC) to within the range of the Arduino ADC.
The voltage could be anything between + and - 250V, but I ...
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How do I correct the offset voltage of op-amps which have no explicit offset-null pins?
Not all op-amps have explicit offset-null support, but all op-amps have an offset voltage.
This is exactly my practical circuit:
How do I correct the offset voltage of TL084 in this circuit?
(...
- 14.1k
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Changing a Signal's DC Offset
I have a square wave being generated from a waveform generator oscillating between 0 V and 5 V. The generator does not support negative DC offsets. I need to shift this signal down to be centered ...
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2
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Does driving a speaker with a DC offset AC signal matter?
Do these two input signals have different effects on a speaker?
An AC signal with some value of DC offset.
Same AC signal but centered at 0 V.
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What is the effect of supply voltage asymmetry in opamp amplifier topologies?
What is the effect of a \$\Delta V\$ voltage shift in one of the supply voltage inputs of an opamp on its functional behavior (\$\Delta V\$ can be positive or negative)?
Suppose that, I'm designing a ...
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1
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Solution for adding around 60V dc-offset on digital signal(0 and 5v) of 10MHz frequency
I thought of using Opamp adder for this but the problem is high offset value which can saturate the Opamp. Can you please suggest some other solution ?
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DC offset of amplifiers for 12V single supply operation
I want to be able to amplify a signal using op-amps and a single power supply. In order for the op-amps to have maximum swing with a 12V power supply the AC input signal needs to be offsetted to 6V.
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dc offset in a miller integrator
I simulated a miller integrator circuit on multisim online. When I did so I made sure that dc offset in the op amp and the source is zero and also bias and offset currents are zero. But in output to a ...
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1
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How do I remove the offset from the DAC output and change the range?
This DAC has an output range of 1-3 volts. Here's the datasheet:
Datasheet
I'm getting pulses with different amplitudes, frequencies, duty cycles and widths varying from 0.2 ms to 2 s from the DAC. ...
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Peak to Peak vs. Amplitude
For a sine wave,
Amplitude is the fluctuation or displacement of the wave from its
mean value.
Peak-to-peak (pk-pk) is the difference between the maximum positive
and the maximum negative amplitudes ...
- 157
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Convert an audio signal to 0-5V using single supply op amp
I'm trying to capture an audio signal using an analog input of an Arduino Uno. The Arduino's analog input must be between 0-5V. I'd like to use a single power supply via an 9V battery, so I'm using a ...
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How to remove the DC offset in a cascaded op-amp amplifier circuit?
I have 4 op-amps in cascade with a gain of 10 each to give a total gain of 10000. I noticed the circuit produces a DC offset which then gets amplified causing the amplified signal to clip ...
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1
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423
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How can I produce AC with a DC offset, isolated from my AC supply
I'm working on a project to provide remote control for model trains. The trains I am using are AC powered with approximately 0-20VAC applied to the rails. They have two features: directional control ...
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How to remove DC offset of the input signal without using an opAmp?
Below is a pulse train with a DC offset:
This will go to the circuit below as input.
The thing is this works well in simulation but in real I need to remove the offset of the input signal.
My ...
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1
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1
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How to compute DC offset of analog circuit?
I have an analog circuit which has an input voltage range Vin of 5V - 10V and output voltage Vout.
One can assume that the circuit has been simulated and a DC sweep of Vin with a range from -10V to +...
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DC offset for AC signal
Hi guys, I am looking for some clarification regarding how to create a DC offset for an AC signal. Attached to this post is a quick schematic that I have drawn. Am I correct in saying that by ...
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A question on sizing a blocking capacitor
When I was trying to find an answer for an optimum capacitor value for entire DC removal of a signal I encountered the following:
In general, DC blocking capacitor shall behave like a short at ...
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DC offset and amplifier
I have a very small AC signal from a receiver coil of Metal Detector that I want to provide some DC offset so it can be handled by a microcontroller after it is amplified. I came up with this solution....
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2
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Offset adjustment with unity-gain buffer
I want to include to my design an 'variable offset adjustment' circuit using an operational amplifier. This circuit would allow me to ajust the offset of my design. In my circuit, I already has a ...
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1
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Op Amp as a simple switch
I want to build a little voltage switch that switches on a buzzer and a relay when a certain voltage is reached. Please have a look at the schematic.
I use a trim potentiometer to set up the switch ...
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