Delay Definition and 185 Threads

hi every one , I'm a student in university , i have a projet it's about calculate speed of waves in liquid by to piezo electrique , one workd like emmeter and the other receppter , the distance betwin the two piezo is fixe , the probleme is i nedd to calculat the time betwin the moment who i...

Hi, I'm sure there are such devices both factory made or diy versions , basically what I need is a relay that switches on a few secs after the power supply itself has turned on, because there is or can be a voltage spike occurring during the first few moments when the power supply is switched...

I have a choke which has 2.5mH inductance and 2pF of capacitance. I have been looking at formulas for calculating the delay time and found d = sqrt Lo Co Where Lo is the intrinsic inductance per unit length and Co is the intrinsic capacitance per unit length Since I only know the inductance...

Homework Statement The step I am trying to follow is detailed here where I am trying to get from equation 6.26: t=\int_{r_1}^{r}(1+\frac{2M}{r}+\frac{b^2V(r)}{2}+\frac{Mb^2V(r)}{r})dr to equation 6.30 t=\sqrt{r^2-r_1^2}+2Mln(\frac{r+\sqrt{r^2-r_1^2}}{r_1})+M(\frac{r-r_1}{r+r_1})^{1/2} Homework...

Hi guys, I was just wondering, I'm designing a full adder for a bitslice of a 16 bit ALU. I have SPICED my design and I am getting a propagation delay for the AND mode between the two bits of about 70ps. I'm working in a low voltage 90nm process. Am I in the right ballpark in terms of...

Hey everyone I'm trying to design a simple time delayed device. Device could me mechanical but it doesn't really have to be as long as it does what I want. Just need something that is relatively small could be wide and tall just not thicker then 1 inch. The device should have a arm/button...

Homework Statement Question: If a broadcast of a sporting event went up to a geostationary satellite, then traveled 50 000 km to another geostationary satellite, then came back to earth, what would be the delay in the signal? All electromagnetic waves travel at the speed of light, and most of...

So, I heard the other day from someone online who claimed that if the sun would to suddenly disappear that the Earth would still travel in its regular path for 8 minutes before breaking off. The person claimed that because it takes light 8 minutes to reach Earth, and that since nothing can...

In order to transfer on time from community college and prepare for the MCAT I have to really scrunch my classes. I was planning on taking Calc 3, Liner Algebra, O Chem 1, and Physics 1 (mechanics) at a whopping total of 19 units in 16 weeks. Is this doable? I would not be working and all of my...

Homework Statement Does the delay of propagation of pressure gives a torque during a short time ? A disk full of a liquid turns at a constant angular velocity w around the red axis. At a time, a valve move out, this will increase quickly the pressure inside the liquid. 1/ Draw the lines...

Why the Shapiro time delay is calculated with respect to the difference in coordinates and not with respect to the physical distance? I follow the discussion of Clifford (Theory and Experiment in Gravitational Physics) which uses isotropic coordinates and PPN approximation. To make more clear my...

First of all, sorry for any problem with my english, it's not my native language and I'm still learning. I hope to not make too many mistakes. I'm Brazillian, by the way. Here in my country, public universities are free. I live with my family and my home is close to the university. I don't...

When you have a metallic ball hanging from a electromagnet and you disconnect the electromagnet, there is a delay between the moment you unplug the machine, and the ball starts falling. Why does this happen?

Hopefully I can word this correctly. Consider viewing S11 of a short on a smith chart. It starts at the left and moves clockwise around the edge. If you then add a small length of line between the reference plane and the short, the phase angle wraps further around the outside in the clockwise...

Hi I was working on delay-lines and I wanted to know if a pulse is delayed by 10 pulse lengths through a delay-lines than what is the corresponding storage bit for that delay line. Thanks

I recently attended a seminar, which said impedance increases with temperature, which results in timing delays in digital circuits. I don't understand how increase in impedance results in delay.

Homework Statement A radio telescope, whose two antennas are separated by 55 m, is designed to receive 3.0-MHz radio waves produced by astronomical objects. The received radio waves create 3.0-MHz electronic signals in the telescope's left and right antennas. These signals then travel by...

Homework Statement [/B] What is the time delay for a television signal that is sent via satellite? Communications satellites orbit above the equator in circles of radius 36,000 km (6 times larger than Earth’s radius!). Not sure if my answer is correct... Homework Equations...

Homework Statement For large concerts, loudspeakers are sometimes used to amplify a singer's sound. The human brain interprets sounds that arrive within 50 ms of the original sound as if they came from the same source. Thus if the sound from a loudspeaker reaches a listener first, it would...

Hello, can someone please tell me how to draw this time chart? I got this from a friend and I don't understand how he got it. A, B, C emit hazard at output Y. Here are the circuit diagram and the time delay my friend drew.

Hello. So when you apply a square wave of voltage to a circuit, there is a slight delay for the electrical current. I'm trying to understand this concept better. I'd like to know if this delay is shorter with wire diameter.. if higher voltage decreases the delay time.. etc. Is there a name for...

Hello, I am trying to develop a software control algorithm to compensate for oscillator imperfections/frequency drift. I have a NTP server which I can get a pretty good estimation (@1Hz) of the "true" time and compare it to my system's time. I can differentiate the offset-error to calculate...

Homework Statement Need to design a system where the lamp (output) turns on when sound is heard and turns off after 10 seconds of no sound, but it must also be dark (light sensor).Homework Equations The Attempt at a Solution I have put a Light Sensor (that is set to let current flow when it is...

Hello All, I'm building a HMM for some data where there are two different time delays. Specifically, I collect data in consecutive traces, such that the time delay between each data point within a trace is approximately fixed, and the time delay between each trace is approximately fixed, but...

The GPS satellite has an atomic clock which sychronizes with the receiver. But when the receiver gets the time, it is delayed as it travelled. So when its 08h 00min 05s in the satellite, the receiver gets maybe 08h 00min 03s. The time of travel of the signal is 2s but how will the receiver...

Why is there a large Shapiro delay when a light beam passes a black hole? Coordinate velocity of the beam is slowed down in a gravity field, except for the straight down component of the coordinate velocity? Some part of the trip takes a long time anyway.

Imagine two parallel conducting plates set at a distance of several meters. If one charges the two plates simultaneously then one would expect a small delay before they started repelling each other due to the time it takes changes in the static field to propagate from one plate to the other...

Hi~ Actually I am fine with calculating the delay but I haven't got the concept clearly enough. Both nmos and pmos have their equivalent RC models. I understand how the RC model of nmos works when its on or off but I don't get how the pmos turns out this way. When its off, the upper part...

"...incarceration or institutionalization can delay emotional growth" I once read a criminal profile of a serial killer made by a forensic psychologist. The forensic psychologist wrote the following: "Age is difficult to predict because this analysis is a measure of an offender’s emotional age...

Hello All I am using a very basic delay line interferometer to measure the linewidth of a laser source. Basically there is a 1550nm laser that emits light which is split, and one half of the light travels down a 700m delay line before being recombined and the interference is observed. This...

Is there some systematic procedure to solve delay differential equation ? Here's one equation that I would like to solve \large \frac{1}{ \omega } \frac{dV_0(t)}{dt} = V_i(t) - \frac{V_o(t-T_d)}{k} where Td is the delay Thanks

Hello all. I am trying to understand number 2c of this pdf...

Why is there a delay of about 10 milliseconds of vocals in one of the stereo outputs? I heard, this is supposed to give you a sense of space. But our ears are just less than 1 foot apart, and it takes sound about 1 millisecond to travel 1 feet in air. Since our ears are not 10 feet apart, we...

When calculating delay, like the fall time delay of the output, through an inverter with rc model of the transistors (assuming Cmos inverter) why do we neglect the short circuit current through the device and what are the assumptions. Can anyone explain this?

Homework Statement The attached page explain the work and delay lag but actually i can't understand when he said for example that two bridges can't start together?why? how he know that? and in other graph he said the different directions of lag which is correct actually i completely...

Homework Statement From the average power consumed by the lamp in a light dimmer circuit connected to 240V AC main, What is the expression for RMS voltage, calculate the range of values of the delay angle α,(i)RMS voltage (ii)RMS current in the lamp, (iii) the average power if its nominal...

Is there a simple way I can measure the propagation delay of my logic gates? For instance, is there a circuit I can build (using logic gates) to measure the propagation delay? What if I tried building a circuit whose output constantly oscillates? This would certainly prove that the...

Hello! I was writing a basic program and was wondering about this problem:- when i give exit(0); the compiler exits as soon as that part of code is reached. Is there any piece of code such that after it reaches that part of code, it waits for some time before executing exit command? This can...

I have a question about encoders. In one of my classes we had to design a 8 to 3 encoder using verilog. my code is the following. module encoder( S, D, E); input E; //enable input [7:0] D; //input x, y, z output[2:0] S; //ouput reg [2:0] S; always @ (E or D)begin if (E==1) begin...

Hi all, I encounted a write file problem for Fortran 90. I appreciate it a lot if you can help me. I open a file at the beginning of the program. Then everytime I rewind the unit number and write one new line to the first line of the file (the previous data on the first line is replaced)...

"Involuntary motor reflex" delay while sleepy Ok, I do confess I got pat of the title from Mel Brook's movie "Young Frankenstein". That said, here is my question. I'm trying to find an extremely non-invasive way to detect when a person is losing attentiveness, or getting sleepy. FYI, I'm an...

I would like to know if anyone knows any good formulas for calculating the delay of impulses in single conductors twisted around each other when the period of the impulses is 1μs and the pulses are 20ns long. Some of the usual relations are no longer applicable in this case due to the very...

Hello all, hope everyone is having a good week so far. Anyway I am trying to solve a problem, hopefully you guys can help me with this. I made a quick drawing on Paint to try to explain myself, sorry for the poor art. So basically in the circuit shown in my drawing, if you hit the switch...

Does the back emf in a dc motor start to appear after a slight delay(say 1 or 2 seconds) after starting up the motor? I have had this simple doubt for a long time.According to the "generator principle" both applied emf and back emf will always exist simultaneously.Also it would be in violation...

I have a driver that sends power to a wire when it hears a sound. What I would like to do is cut the wire into sections and put something inline that would delay the power getting sent by a fraction of a second. So, wire 1 is powered, Δt, wire 2 is powered, Δt, wire 3 is powered, etc. Is...

Hello everyone, I am working on the group delay of the front end filter of a GPS system. I am given the measurements of the S parameters of the filter in a touchstone file (s2p) in the following format. ! S-Parameter for B3521 in Touchstone format with Magnitude (lin) and Phase ! Normalised...

Hi guys, I'm looking for advice on how to go about building a circuit that will delay a signal by about 30 microseconds. The delay needs to be adjustable, say between 10-50 microseconds. The signal is audio frequency. Basically I'm trying to make a noise cancelling device, i.e. a microphone...

Homework Statement Hi, I would like to generate a random delay time and value in testbench. This is what I did: for(i=0;i<300;i=i+30) begin j = i + {$random} % (300 - i) // MIN + {$random} % (MAX - MIN ) #j b = {$random} %3; #3ns b = 3'b000; end I want to generate random...

Hi, a friend and I were talking and a question came up about a delayed force. It goes like this: This is hypothetical obviously. You have the sun and the Earth pulling on each other because of gravity. (The force of the pull between them does not matter, it just has to be equal.) The sun and...

In this thread in another forum, I calculated the coordinate speed of light as measured by a distant observer. As far as I understand it, the length contraction in GR is only in the radial direction, right? None tangent, correct? The time delay of light found, though, trying different examples...