Questions tagged [phase-shift]
The phase-shift tag has no usage guidance.
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Turns of inductor relation with phase shift
I have a question regarding the phase shift produced due to an inductor. I have seen some inductor coils that have only 2-3 turns on the core. Some have only one as shown below. It is known that an AC ...
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How to calculate capacitator voltage over time for a RC circuit with AC power source?
I know with DC power source, the voltage for capacitator is expressed as:
https://www.electronics-tutorials.ws/rc/rc_1.html
Can the same equation be applied to AC power source?
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Define the expression by the waveform [closed]
Could you explain how to define the expression for the dead time \$\theta\$?
$$f_{1}=\frac{2}{2\pi }\int_{\theta }^{\pi -\theta }{V}_{in}\sin(\omega t)d\omega t
$$
$$f_{1}=-\frac{2{V}_\text{in}}{2\pi ...
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Can DAB both step up and step down the output voltage in the same design?
I study this converter through these articles (1 , 2).
Attached is the DAB model for LTSpice.
I usually see these converters working in buck mode (input bus with constant voltage PFC, maximum output ...
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Computing the phase shift of an RC phase shift oscillator
Consider this RC phase shift oscillator, taken from here:
As described in this answer, the phase shifts shown in the image are actually incorrect: https://electronics.stackexchange.com/a/216308/5546
...
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What is the maximum / minimum phase shift in the Dual Active Bridge converter?
Learning Dual Active Bridge Converter from this article.
Recommended work area to achieve ZVS
There is a formula for calculating phase shift limits
Where M = N*Vout/Vin, N = 1.6
In the article, I ...
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adjustable analog phase shifter [closed]
I am a student. I am preparing a project to measure 2 sine waves with different phase-shift. To calibrate my phase-shift measurement device, I need a fair accurate IC / device / product that the ...
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Reliability issues with si5351 when generating two clocks with a phase difference of 90 degree
I am trying to generate two clocks of X-MHz each, X being a value ranging from 5 to 100. I chose si5351 chip for this as a breakout board was easily available from Adafruit. I used attached code to ...
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Electrical line distance vs phase shift
The below screenshot is from TQP7M9104 page-8. Note 8 provides the constraints on the distance between components. If I am not wrong, this is for electrical line distance to control the phase offset. ...
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How to minimize voltage-current phase shift in the output signal of a circuit?
So, I have this circuit (Fig. 1, LTSpice ASC file here: https://github.com/PauloCarvalhoRJ/Circuits/blob/main/driver_speaker_5W_RMS.asc) designed for small scale geology investigations (using sound ...
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Filter phase shift and causality
A filter I have is showing to have a positive phase shift of ~30° at 1 kHz:
Also, it seems that the output signal is actually advanced by 30°.
But we all know that this is impossible because of ...
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STM32_2 Phase shift
I did PWM for 2 Phase. It works great, but after I stop my Timer Master and Slave in order to have Delay, I mean with HAL_TIM_PWM_STOP, doesn't work my timer slave ...
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Parasitic oscillations for phase shift not equal to -180 degrees
From "Learning the Art of Electronics" by T. Hayes and P. Horowitz, Cambridge University Press (p. 360):
As per above figure, the LF411 op-amp imposes a -90 degree phase shift on output ...
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Transfer function of RC circuit and phase shift
recently I have been learning about oscillators and I need a little help with that. I am kind of a guy that likes deriving things and it helps me understand how the circuit itself behaves. The thing ...
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DAC DDR Interface with Vivado and Zynq7000
i need to connect a dual-channel DAC (AD9117) to a Zynq 7000 FPGA. The DAC has a DDR Interface, on which the Data for Channel 1 is clocked on the rising edge and the data for channel 2 on the falling ...
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Power meter integrated in a circuit
I am constructing an electronic circuit that requires a power meter with a voltage signal output that represents the changes in power in a resistive load. It is crucial that the phase of this signal ...
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Alternate between 0 and 180° shift at regular intervals for a sine source during a .tran operation on LTspice
Is it possible to alternate between a 0 and 180° shift at regular intervals (say every second) for a sine source in a circuit during a .tran operation in LTspice? (I need to see the reaction of my ...
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Analog phase shift/delay for PWM that keeps its duty cycle
I have a variable duty cycle PWM signal. Its frequency and duty cycle can change during the operation of the circuit.
I want to apply a deliberate phase shift/delay to it. In terms of phase, the delay ...
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How can I calculate RC circuit impedance and phase difference in parallel?
Most of articles on the web, define capacitor as ideal capacitor. I want calculate impedance and phase difference of this circuit with capacitor ESR.
For example :
simulate this circuit – ...
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Is there a better way to digitally phase-control this triac?
This is a follow-up to a previous question which has a more detailed background of the problem I'm trying to solve.
I've built a wireless remote controller for a model train I have that runs on ~18VAC ...
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Reconciling phase shift error of length-tuned structures in 81-86GHz I/Q direct down-converter ASIC with datasheet specifications
I'm watching a video on reverse engineering a GaAs 81-86GHz I/Q down-converter ASIC. The relevant section of the video for this question is 10 minutes onwards, but watching the video isn't necessary ...
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How can I properly convert two phase AC supply to three phase using capacitors?
I have an AC 3 phase delta connected submersible induction motor with specifications 440 V, 10.5 A, 5 HP, 2800 RPM which is already fitted with a 3 phase PF correcting capacitor in parallel. The ...
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Constellation diagram of an 8-PSK modulator with \$\cos(\omega _ct)\$ as reference oscillator [duplicate]
For the figure and problem below, is my 000 input plotted correctly and has the correct phase angle in my constellation diagram?
The cos(ωct) is located on the positive x-axis since according to my ...
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Why do I get the wrong phase shift?
I am trying to compare theory vs simulation values and it seems to be that there are differences. I am using Multisim to simulate a RLC circuit, the LC are in parallel and in series to the resistor.
...
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How to find phase shift from oscilloscope?
In university we are tasked to input a 10Vpp 50Hz signal, in a series RLC circuit. I’m having trouble understanding the difference between a positive and negative edge phase shifts on Agilent ...
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How can power factor be reliably estimated given the phase error in current sense transformers?
The majority of mains power sensing devices I've seen (both commercial products and ICs) utilise a current sensing transformer. Many of them also calculate or estimate power factor. However, the phase ...
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BJT phase shift oscillator
DC 5 V for input
Three 10 nF capacitors
One 2.2k resistor
One 680k resistor
Two 5.6k resistors
My assignment is to make an oscillator using only the elements given above.
This is the desired ...
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Why doesn't the bypass capacitor cause phase shift in this oscillator circuit?
I am trying to understand oscillator basics. I thought I already understood how a capacitor works, but I still get confused about it.
This circuit is an RC phase shift oscillator. I understand that we ...
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Zero-cross detection phase delay BLDC motor
Low-speed output:
High-speed output:
In the above circuit, output channel 1 (yellow) is a Hall signal and channel 2 (Green) is the ZCD output.
There is a phase delay between channel 1 and channel 2 ...
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Phase shift oscillator: what is reducing loop gain and how does changing feedback resistor affect things?
I have simulated the following circuit in LTSpice:
One can see that a stable sine wave with a peak of about 6.3 V is obtained, which has a frequency of 1 kHz (I calculated the RC network values to ...
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Why does PSPice invert this AC current?
I'm running a simulation on a simple circuit in PSPice 9.1:
This voltage supply is set to provide a 1V AC signal with a frequency of 60 Hz. As the load is only resistive, the current should not have ...
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Is my summary of parasitic oscillation in op-amps wrong?
We were discussing negative feedback in op-amps with my community college instructor. I tried to learn ahead about the concept of parasitic oscillations in feedback circuits. I wrote a summary of what ...
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Relation between number of RC networks and phase shift in RC phase shift oscillator
The generalized expression for the frequency of oscillations produced by a RC phase-shift oscillator is given by the formula below
$$f=\frac1{2\pi RC\sqrt{2N}}.$$
Here \$N\$ is the number of RC ...
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LTspice AC analysis extracting only the phase shift value at a certain frequency
I am trying to extract the phase-shift value at a certain frequency in AC-analysis mode in LTspice.
.meas AC Ph_Shift FIND (V(out)/V(in)) WHEN FREQ=50
With the ...
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Does a grid-connected induction generator create phase difference between the grid voltage and generated current?
I saw an answer to another question that stated:
"An ordinary induction generator connected to a power grid will draw lagging reactive volt-amperes from the grid and supply real power to the grid....
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Making 2 clocks with phase shift
I'm trying to create 2 clocks with phase shift for 1/4 cycle time:
...
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Phase of grid current is not varying in the simple RL circuit
I am trying to implement the following circuit:
Circuit parameters are as follows:
R1 = 2 ohms
L1 = 10mH
V_inverter = 28.175V (peak)
V_grid = 200V (peak)
I want the grid current to vary in full ...
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Trying to Construct Phase Shift Circuit in Multisim
I'm attempting to construct the variable phase shift circuit from this video (link takes you to the circuit diagram of it) within Multisim. As far as I can tell the circuits are identical, and yet my ...
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Measuring relative phase of two microwave signals at different frequencies
I would like to measure, and ultimately control, the relative phase (and amplitude, but that's easier) of two microwave signals, one at \$f_0 \approx 1 \text{ GHz}\$ and one at \$f_n = n f_0\$, where \...
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Noise in tunable sine wave oscillator
I recently soldered a tunable phase-shift oscillator on a breadboard PCB. It produces a sine wave in the range from 80 Hz to 3.3 kHz. The oscillator frequency is tuned with a dual 100 kΩ potentiometer....
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Will the phase shift be mutual if one phase is stepped down through isolated transformer and added to another phase?
i came across this concept of creating phase shift ( lagging and leading conditions) by adding a stepped down line voltage in series with a different phase voltage. I physically verified the concept ...
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Simulating a RC Phase-Shift Oscillator in LTspice
I'm having some difficulties in simulating this circuit in LTspice. I'm using op amps in the inverting configuration and buffers between each stage but it's simply not working. The simulation runs for ...
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Attempting to make a variable phase shift circuit
I'm attempting to construct the variable phase shift circuit from this video (link takes you to the circuit diagram of it) except that I am using a 1 uF capacitor in place of the .022 uF capacitor. I ...
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PSFB - Asymetric current at the secondary
At the 3rd step of the PSFB cycle, the current at the secondary is not shared equally by the two windings that it would be if it were a full bridge. Does anyone can explain why it is not the case ? ...
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How does a phase shift keying receiver detect when a new incoming modulated signal is at the input?
This is not a math question.
What I want to know is the physical implementation of the receiver where phase modulated signal is coming to the receiver.
How does the receiver decide when the phase ...
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Phase angle of induced voltage in transformer?
Why does the voltage induced in the secondary coil of a transformer lag 90 degrees from the flux in the core? The secondary voltage is induced when the flux cuts it, but then, why does the induced ...
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Testing of HF transformer designed for phase shift full bridge converter(PSFB)
I have designed an HF transformer for a PSFB converter.
Specs:
Peak Primary Voltage = 800 V
Peak Secondary Voltage = 176 V
Turns ratio Np:Ns = 18:4
Primary Irms current = 12.38 A
Secondary rms ...
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Phase cut dimming driver for panel lights having occasional flick
I am designing a phase-cut dimming driver for Incandescent bulbs as well as LED panel lights with dimmable drivers.
Using a BTA24 Triac and VOT8121AB Optocoupler driven by my MCU.
For zero-cross ...
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Phase difference between the input and midpoint of voltage divider? What can I do about this?
I am very shocked to see a phase difference between the input and the midpoint of voltage divider. The voltage divider for this circuitry is two 1Mohm in series. The input signal is powered by the ...
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Phase relationship of multiple Fractional-N PLLs with same reference clock
I think I understand the general operation of PLLs in the case where a single reference clock generates a single output clock. Once the PLL is locked, there is a deterministic relationship between the ...
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