Output Definition and 1000 Threads

Homework Statement The op amp in the circuit seen in the figure is ideal. Find the steady-state expression for vo(t). vg = 1cos(106t) V. Express your answer in terms of t, where t is in microseconds. Enter the phase angle in radians. Hints: (1) Let the node above the capacitor be Node a, and...

Hey everyone, I've been working on this project for awhile (some of you may recall having seen a very early version), and I am so close to being finished, but I have a problem somewhere, and I can't figure out why. So what is happening here is that this code is supposed to calculate the...

That 2 terminals shows PD of 1 volt on Meter, but when shorted, there is no current shown on Meter? I checked and rechecked [using different meters, wires, AC, DC options and what not], so I see only V measurement, but no I. Is it possible? If so, then what is the use of that PD, when we can't...

let say there is an bundle of fuel with 4 rings. Where ring 1 is center most ring and ring 4 is outer most ring. 1st ring contains: 1 fuel element 2nd ring contains : 6 fuel elements 3rd ring contains: 12 fuel element 4th ring contains : 18 fuel elements The general distribution of...

Homework Statement For vi(t) =V0 cosωt, obtain an expression for vout(t) in the circuit below and then evaluate it for V0 = 4 V, ω = 400 rad/s, R = 5 kΩ, and C = 2.5 μF. Homework Equations The Attempt at a Solution For this problem, I am having difficulty taking that second term...

I have a site made in PHP eons ago by someone I no longer have contact with. Lately site was attacked with a SQL injection attempt. Input is sanitized, so there is no immediate danger for the database, but this attack exposed vulnerability - if value of one the parameters is not from the...

Hi - I am by no means an EE, so please be aware I may have some fundamental flaws in my knowlege. I have a battery powered isoluation unit that takes some voltage in and provides either a voltage or current source output. I am giving it 1V as an input and according to the conversion ratio...

This dilemma seems to occurs all the time in so many different engineering problems. It seems impossible to optimise something with multiple parameters, for three reasons: There are too many possible combinations of these parameters to be able to simulate them all You optimise one...

Homework Statement What is the output voltage for an op amp whose non-inverting input is connected to ground and its inverting-input voltage is 4mv? Assume that the op-amp open-loop gain is 2*10^5 and its supply voltage is Vcc=10V Homework Equations Vo= A(vp-vn) The Attempt at a...

So,I got this vector of input data in Matlab,which is vector of approx 1x25000 length. I have frequency responce function attained by different estimators (H1,H2,Arx). Anyway,my FRF is also a vector of 1x129 length. Those two are different sized vectors.How should I find the output data...

Can some show me how we show a LTI system is BIBO? I read the definition but it didn't help. For example, how would we show if \[ H(s) = \frac{s - 2}{(s + 2)(s + 1)(s - 1)} \] is BIBO stable or unstable?

Homework Statement Determine vo across the 10-kΩ resistor in the circuit below. Homework Equations The Attempt at a Solution For this problem, using the ideal op-amp model, I believe the currents are zero in both the positive and negative terminals of the op amp. Therefore, there...

Homework Statement Find Vo as a function of Vs Homework Equations The Attempt at a Solution My thought process so far is to do KCL and find Vo as a function of Vn2, then Vn2 as a function of Vo1, then Vo1 and Vo as a function of Vn1, then Vn1 as a function of Vs, finally giving me...

Wondering if anyone has any knowledge on electricity generation from piezoelectrics. I am a senior in high school with electromagnetic physics and basic mechanical engineering classes completed, but I am no electrical engineer, so simplicity is key. I am looking to design a shoe that...

Homework Statement In a hydroelectric plant, water falls from a high elevation to a lower elevation,losing PE in the process/ In doing so, it turns turbines which generate electricity. In a particular hydroelectric plant, water flows at a rate of 400 kg/s. If 80% of the PE that the water...

Hello all, Long time no see. I am hoping to find someone with knowledge of light output (in particular UVA output) of fluorescent tube lights. I have 2 questions: -Should I expect the light output of a 20 watt CFL bulb and a 20 watt 2 foot long fluorescent tube to be the same, or...

Homework Statement The circuit below is a BJT common emitter amplifier. Find Vout as a function of Vin. This may seem hard to parse at first, but it is actually pretty straightforward. Carefully replace the BJT symbol with the model for a BJT we used in class, making sure the base (B), emitter...

In the inverting operational amplifier circuit I've drawn below I am trying to calculate the output voltage and the voltage at the blue spot. The resistors are of the magnitude of several K ohm. I have done the following: Uout = Rf * (I1+I2+I3) = Rf * (U1/R1 + U2/R2 + U3/R3) The voltage Ux...

Homework Statement Hi, I am working on a temperature control system which involves using a power resistor to heat a block of aluminium and a thermocouple to measure the temperature. Both the thermocouple and the power resistor will be controlled using the NI USB-6008 and Labview. As my...

Hi all, I am not sure I understand the concept of output impedance. Say I have a function generator with 50 ohm output impedance, and I am driving a 100 Ohm resistor at 1V at 1kHz. What is the current in the system? does the system behave like 100 ohms in parallel with 50 ohms...

Homework Statement My simplified version of the equation: Power plant proposes output power increase from 188MW to 535 MW Excess heat is dumped into river with smelt. Smelt can withstand a 3.44C temp increase River = 222ft wide at dump site. Do not know depth or cross section here...

A load has a power rating of 160 w when the current is 6.0 A. What will be the power output if the current increases to 15 A? I know how to do it : use the formula v=I^2R In this case 15/6 = 2.5^2 = 6.25 160 * 6.25 = 1000W. My question is why can't you use p = VI ? Because in this case , it...

Hi, could someone confirm whether I am right in thinking that for a PWM inverter, the input sine voltage is converted to DC using a bridge rectifier? Does this DC voltage then have a value which is the same as the PEAK value of the sine input? Is the DC voltage then 'chopped' using IGBT's to...

For a uni project one of my concepts is to use thermo couple generators like these http://www.thermoelectricgenerator.co.uk/TEGinstallationandspecifications01.pdf on the exhaust to generate electricity to replace the alternator. The problem is i can't figure out how much current and voltage is...

Can anyone help me with a formula to calculate the output of an airlift pump for a certain head, pipe diameter and pipe length? An air lift pump works on the principle of a fill/empty cycle (so many seconds to fill and so many to empty). I can calculate the pressure required for a particular...

I trying to come up with a way to measure the power output of an engine using a water pump, And I wanted some one to go over my math and check for flaws in my thoughts. My idea is to measure the flow rate and the pressure of the output of the water pump. Using this math to solve for power...

hello guys ! i know that in zener diode limitting circuit there are three types : 1-limitting Positive peak 2-limitting Negative peak 3-limtting both peaks and i know that output voltage for limitting positive peak =VZ+0.7v limitting negative peak= -VZ-0.7v but i don't know what will...

Homework Statement Question: If petroleum used in transportation were replaced by electricity generated by coal, what would be the percentage change in carbon dioxide output? Refer to the following diagrams for values...

Homework Statement In a race, a 54 kg athlete runs from rest to a speed of 11m/s on a flat surface. The athlete's body has an efficiency of 85% during the run. How much input energy did the athlete provide? Homework Equations efficiency = E out/E in x 100% The Attempt at a Solution...

Homework Statement Consider the FIR filter with {bk} = {3, 4, -4, -3}. These are the filter coefficients for k = 0, 1, 2, and 3, respectively. Sketch the output y[n] where the input is: x[n] = δ[n] x[n] = (u[n] - u[n-2]) x[n] - u[n] Homework Equations \sum^{M}_{k=0}b_k x[n-k]...

Homework Statement Prelab material, I know how to solve for the gain and vout on a circuit. But reading the actual manual of a op-amp is confusing and I just want to make sure I'm correct. The initial input voltage will be a 1V triangle wave. Then later we increase the voltage to 3V. R1 is 1K...

Hi all, For this problem, I have checked all possible factor that may cause NaN in variables such as - division by zero --> not found - undefined variables - set initialization for variables - ep, hr,ht - parameter setting --> double precision problems checked, no issue but still...

Transformers -- Why output current decreases for step-up xfmr? So I've been wondering if anyone in PF could explain to me the reasons currents can either increase or decrease in a transformer depending on the wiring. I understand electromagnetic fields/forces, magnetic flux, and I even could...

Homework Statement A small motor is used to operate a lift that raises a load of bricks weighing 500N to a height of 10m in 40s at constant speed. The lift weighs 300N. What is the work done by the force of the motor? What is the work done by the force of gravity? Homework Equations P...

Hello, I graduated last year for mechanical engineering and have a project that i am working on at home that i need some help on with the electrical part. what i am trying to build is a shock dyno, i need to measure force and velocity, i plan on using a lvt and a load cell unless someone has a...

Hi guys, I have to calculate de optical power output of a set of LEDs. For that I used a photodiode to measure the photocurrent at each wavelength and then calculate the optical power at each wavelength using the following formula: R (A/W) = I/P, where R is the responsivity of the...

Need some help, I need to convert the output of a small geophone (30mv to 1 v) to an audible signal so it can be recorded. The impedance is 375 Ω. Most available preamp circuits have a lower max input. Any suggestions? Thanks.

Draw out the circuit diagram for the following 2 output circuit specified in the following Verilog module (AND - &, Or - |, Not - ~). Use AND, OR and Inverter Gates. Module test1(f,g,x,y,z); input x,y,z; output f,g; assign g = f(~y&~x); assign f = x&y |...

Homework Statement For the following circuit, if Rth = 50kΩ, Ri = 1TΩ, and Ro = 50Ω, calculate the output voltage. Do not neglect Rth, Ri, or Ro. Circuit is here. Homework Equations Possibly KCL and/or KVL, possibly the non-inverting op-amp equation Vo=(1=Rf/Rs)Vi, Ohm's Law V=iR...

1) My understanding is that the output of a DC generator has the form Vmax*|sin(2πft)| for 2 poles. Having more poles makes the output smoother but it would still have ripples. Is this correct? 2) In many places, I have seen the EMF of a DC generator written as: \phi * (NZ/60) * (P/A). What...

Homework Statement 620 seconds after starting its take-off, a 260000 kg jet reaches its cruising altitude of 9200 meters and flies with a speed of 235 m/s. Neglecting friction, what has been the average power output of the engines? Homework Equations ΔKE = Work Power = Work/time...

Hello, I'm trying to interface an Infineon TLE4263-2ES voltage regulator with a external watchdog figure. The microcontroller is from the Freescale S12G family. My question is kind of gereic, in a way. When I'm sending a pulse signal to the voltage regulator from the micro, at what frequency...

Hi, I am currently working on science project. But I have a problem. I am conducting Chladni pattern experiment and so I got a function generator (signal generator). But for Chladni pattern experiment, a Function generator has to have an output of 10W. The maximum output of the function...

I have a homework assignment that requires me to write a program in c++ to calculate GPA. The assignment wants then input of the grade to be in terms of just A B C, etc.. I'm just having trouble assigning a number value to the user input ie when the user inputs an A for their grade, I need the...

If I have a pulse generator what is the current it can output? It doesn't say in the datasheets IF I have a 5V pulse and 50ohm output impedence am I supposed to believe it outputs 100mA? And then if my load is 1ohm I should get something near 100mA through it?

Mathematica -- how to simplify an output formula Hi all, Is there any more options to simplify an out put Mathematica formula. I used //Simplify but the expression still complicated and //FullSimplify too slow and didn't work. Bests, Safinaz

Homework Statement "How does the placement of the puncture hole of a stearin engine affect the power output of the system?" By a stearin engine, it just means an oscillating candle around a fixed point; a video can be viewed at . I have done all of the data collection by testing...

Question Is there a component that controls the torque output from a flywheel so that its output is constant? Context: Parts: 1) An engage/disengage switch 2) A cable reel 3) A flywheel 4) A mechanism to control the torque output from the flywheel. Process When the switch is...

Hey everyone, I have written a Fortran code for a project I am working on, but am having an issue: I can't get the code to output my data to the file I have opened. Here is what I am trying to do. I am setting up a Monte-Carlo code that selects a random x- and y-value. These values are...

hi all, attached here is my code for 2d fdtd in polar coordinates, from 'numerical electromagnetic: the fdtd method (umran s inan, pg 94-96) written in fortran90. I have try a few approach I could think about to troubleshoot this code but the output is still infinity. Anybody here can give me...