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Questions tagged [phase-shift]

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17 views

How to find phase shift(angle) between two signals in simulink?

So I'm doing a delta wye transformer in simulink and phase shift between these two signals should be 30 degrees, but how to show that, or calculate it? And how to find angle of each signal?
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2answers
85 views

Simple phase shift circuit

I’d like to be able to phase shift a raw guitar signal with a potentiometer between 0 degrees and 360 degrees. The signal is roughly 1V peak to peak and has a fundamental frequency range between 80Hz ...
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0answers
21 views

Convert AC to DC using Phase Shift Oscillator

from what I know, we can convert DC to AC by using Phase Shift Oscillators. I'm able to pull off the manual calculations, but as for simulation on Multisim 14.2, I didn't get the desired graph(phase ...
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2answers
39 views

Phase Lead and phase Lag

I find the concept of phase lag and and lead quite confusing. Suppose we have two voltages \$V(\theta) = V_{max} \cdot \sin(\theta + 30^o)\$ and \$V(\theta) = V_{max} \cdot \sin(\theta + 60^o)\$ ...
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51 views

Phase angle between two sinsoidal currents

I am having trouble solving an example in the book I came up with another solution, anyway the question asked to find the phase angle between two give currents- see attached image what I did I ...
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56 views

Why do phase-shift oscillators appear to use high pass filters rather than low pass?

I noticed that a lot of designs of phase-shift oscillators use a sequence of high-pass filters to get the phase-shift. Is there any reason why one couldn't use three low pass filters instead? I ...
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1answer
57 views

Phase Shift Oscillator | Theoretical Frequency Mismatch

I am working with a few colleagues to build a transceiver system 100% from scratch. A necessary component here is the local oscillator system - we have opted to use a phase shift oscillator to ...
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1answer
52 views

Circuit to identify phase difference between capacitor voltages of two different RLC circuits without loading it

I am looking for a circuit that can translate phase difference of two sinusoidal signals (operating at ~1MHz) to analog voltage swing of 0 - 5V. The signal A & B comes from the capacitors of two ...
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1answer
46 views

measuring ac voltage drop across a resistor with a solenoid in series with it

I wanted to measure the phase difference between the current (magnetic field due to the solenoid) and the system response. I am doing this by measuring the voltage drop across the resistor in series ...
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1answer
28 views

Surge protector outlet with altered grounding potential

I realized that I have a voltage difference of 5 to 80 V AC (orange in Fig. 1) between the protective conductors (grounding cables, "PE-Leiter", yellow-green contacts in drawing) before vs. after a ...
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1answer
45 views

Inductor Voltage and Current Phase Delay on a DC Converter

We learn that inductors introduce phase delay between voltage and current for AC. On a DC-DC converter, such as boost, we have, at the inductor, a DC component superimposed with AC component with many ...
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1answer
90 views

How to get phase shift in this task and in general?

So the task says: In the serial circuit connected to the 50 Hz frequency alternating voltage, effective voltage values 𝑈 = 220 V, known voltages 𝑈L = 660 V and 𝑈C = 500 V. The current in ...
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47 views

Understanding Phase Shift Full Bridge DC-DC Converter

I am studying PSFB DC DC converter. I am a bit confused in understanding the topology. For reference of the functionality I am taking UCC28950 Controller IC's circuit, From TI which have provided in ...
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16 views

Modeling phase delay in high frequency resonantly coupled inductors

I am interested in simulating resonant wireless power transfer circuits similar to the ones developed by MIT and others. So far, I have been able to successfully create a basic simulation model of a ...
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2answers
190 views

Vector Voltmeters vs Oscilloscopes?

I have come across some electronic engineering papers from the mid 1970's where they were testing tunable phase shifters. To measure the phase shift they used a vector voltmeter. As this is not a bit ...
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40 views

BEMF and zero crossing point detection

I am trying to control a BLDC motor without sensors using BEMF method and zero crossing detection. I managed to detect the zero crossing point but I am not sure if it is correct. I read that the hall ...
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1answer
36 views

Can AC voltage phase change across an SSR?

I got an SSR (Picker PCS15-D-240A-25ZL) to control a single phase 240VAC North American circuit going to a heating element on a homebrew setup. One of the load wires goes through the SSR and the other ...
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1answer
46 views

Handling Phase Shift with ANC

I've been working on a circuit to do active noise cancellation, but I'm worried about controlling the phase. Here are my assumptions, and I'd love some help understanding 1)what of my assumptions are ...
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2answers
111 views

Finding phase shift between the voltage and current

I am trying to find the phase shift \$\phi\$ of this circuit. I am using the formula: $$\phi = arctan{\frac{X_{L}-X_{C}}{R}}$$ Substituting in the values: $$\phi = \arctan{\frac{2000\Omega-4000\...
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2answers
341 views

Phase shifting with unity gain

I have come across about active all pass filters which provides phase shift with unity gain. I dont know this is the common practice in part of circuit design. For a fixed or variable unity gain ...
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0answers
43 views

Is a load bank always 3-phase or is a 4-phase possible?

I am designing a low voltage installation and the customer asked for a cell for a load bank. Now he drew this in 4-phase, but I did not encounter this before. Is this possible? I thought they were ...
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1answer
75 views

How can I match phase voltage between a transformer primary and secondary?

I am trying to make a circuit to transform 240VAC, split-phase to a 0 to 5V waveform for an Arduino ADC so I can measure the mains voltage. I have read this question (How to measure line voltage (220V)...
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1answer
83 views

Resolution of FRR Function

I am working with a oscilloscope GWINSTEK gds-2074a. As per the time resolution is concerned, turning the dial all the way down, it shows that it can go down to 1 ns. There is a Delay function in the ...
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2answers
219 views

How can I make a phase shift in an audio signal without changing the frequency response too much?

I have the following problem: I have two amplifiers, one is a mono amp for a subwoofer and the other is a stereo amp for two two-way speaker enclosures. The subwoofer and two-way enclosures have a ...
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0answers
43 views

Creating a 90 deg. circular polarized phased array using two Yagi

Imagine two 2.4Ghz Yagi (WiFi), one mounted with blades horizontal, the other's blades vertical, both aimed at the same target. Each has the same leg of its coax cable (Xmeasurement) longer (either ...
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0answers
35 views

Effect of impedance mismatch on phase of the signal

The effect of impedance mismatch on voltage measurement is known but is it possible for impedance mismatch between a oscilloscope and function generator to cause a phase difference? In my setup I have ...
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1answer
63 views

asymmetric signal split at SMA Tee (wires of different lengths)

I set up a circuit, as shown in the schematic below, to see firsthand how the signal paths of different lengths could lead to a phase difference. I am using an SMA Tee and there is no reason to ...
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1answer
260 views

What is phase ripple and how is it measured?

Whilst reading up on phase response, I came across a reference to "phase ripple". Specifically, I was reading this article by Keysight, on phase measurements. From my understanding of the article, ...
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6answers
241 views

How do I set my speakers out of phase?

A little bit of context: I'm doing a project for my physics class where I could choose the topic, and I chose to do phases in sound and noise cancellation (wavelengths and frequencies). Essentially, ...
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4answers
1k views

Why is there no Phase Shift in CC and CB Configuration

I am curious why in common base and common collector configurations there is no phase shift between output and input (at low frequencies, where stray capacitance doesn't "kick in" yet)? I get it why ...
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1answer
222 views

Can someone help me understand this transistor circuit?

I believe the purpose of this circuit is to perform SQ decoding. It is supposed to shift the phase 90 from 100Hz to 10Khz. I'm interested in listening to the quad version of the Pink Floyd Animals LP, ...
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1answer
229 views

Measuring phase shift between current and voltage with microcontroller

I am trying to understand how this design is used to measure phase shift between current and voltage of an AC signal. From my understand there should be a PWM signal generated on the output. Resistors ...
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2answers
114 views

Is there a circuit that can create dispersion?

I'm wondering if there's a circuit that would create dispersion effects. Essentially, I'd like to create a circuit which can do the following: Spread out a high frequency pulse. For example, put in a ...
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1answer
172 views

Is there an analog circuit or filter that can produce constant phase shift over a specific bandwidth?

I need to match the phase of two signals coming from a pair of transducers over the 10Hz to 4 KHz range, the difference between the two transducers is really close, however one of the transducer lags ...
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0answers
91 views

Physical significance of positive group delay with negative phase delay

This question is an addendum to: Is group delay the same as the delay of a certain frequency? Lately, I've been going back to basics to better understand the concepts of group and phase delay, so I ...
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1answer
58 views

4th order (active) filter, I want constant phase shift band

I'm needing to improve an existing fourth order active filter design. The filter amplifies 10-100 kHz signals as desired, however the phase shift is causing problems. 10 kHz signals are phase shifted ...
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2answers
378 views

Is group delay the same as the delay of a certain frequency?

I know that group delay is the delay of the envelope, or the derivative of the phase with respect to \$\omega\$. What I want to know is what exactly happens in the time domain. For instance take the ...
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1answer
230 views

Log-Taper Variable Resistor from Linear-Taper

I'll start by saying: I've read quite a bit about how to make a "log taper potentiometer" using a resistor and linear-taper potentiometer, but I'm not sure if that will work in my case. I'm working ...
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0answers
88 views

Beam Steering range of a phased array antenna system

What is the beam steering range of a phased array dependent on? For example, if I use an antenna array of Nx1, with a phase shifter resolution of \$\frac{2\pi}{k}\$ and the antenna elements spaced at \...
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0answers
73 views

90 degree phase difference in current between inductors

The schematic is a circuit I am designing. The current through the leg with the inductor and capacitor in series must be 90 degrees offset from the other leg. The rectified current pulses through both ...
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0answers
62 views

Phase Shift Oscillator Feedback Gain

I'm having trouble getting to the result of the feedback gain (β) of the following phase shift oscillator: Is the circuit correctly designed? How do I calculate the feedback gain? Edit: Is it ...
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3answers
150 views

Do Quadrature and Bubba oscillators count as phase-shift oscillators?

I need this information for my school report. Do these oscillators count as phase-shift? I found some references here at the Texas Instruments website, but I'm not quite sure: https://www.ti.com/lit/...
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2answers
54 views

Finding phase angle of AC

After solving for a system of complex equations, I got the following currents: $$I1= -.80669-.35675j$$ $$I2= -1.8546+1.30730j$$ Firstly, I found the current magnitude: $$|I_1|=.88205A$$ $$|I_2|=2....
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5answers
2k views

90 Degree Phase shift at few MHz

I have a seemingly simple question but I've been doing a lot of searching and can't find an answer. What is a simple or standard way to achieve a 90 degree phase shift of an RF signal in the ...
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2answers
97 views

Help with identifying a transfer function - with neuroscience application

This is a question for you electrical network engineers. The problem has arisen in a neuroscience study I am working on, but I hope to be able to glean some insight from other domains that deal with ...
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2answers
919 views

Phase shift in an LCR circuit

In a capacitive circuit the voltage lags current by 90 degrees. In an inductive circuit voltage leads current by 90 degrees. In a resistive circuit voltage and current are in phase. If we have a ...
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1answer
155 views

Simplest phase-shifted gate drive for two mosfets

I have two inverters, driven by two IRF530 mosfets. I need to drive them with a specific phase shift. What is the simplest, most basic way to do it, for simple prototyping? (I am neglecting PWM ...
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2answers
526 views

Transfer function of phase change controlled with capacitance

We have an RLC series circuit with sinusoidal voltage source of frequency \$\omega\$. The normal transfer function of current to voltage is: $$ G(s) = \frac{I(s)}{V(s)} = \frac{1}{R+s L+ \frac{1}{s C}}...
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2answers
213 views

When finding impedance of an RC circuit, why do you multiply with -j and not j?

I understand the concept that the voltage lags behind the current in a capacitor, which is why we have to use imaginary numbers to find the impedance of a simple Series RC-circuit like this: Which ...
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2answers
715 views

Is an all-pass filter a linear phase shift filter?

Im in need of an application that needs to add linear phase shift to a signal similary to the one produced by a Bessel Filter, meaning constant delay, my question is: does a standard 1st order all ...