Output Definition and 1000 Threads

http://www.youtube.com/watch?v=HrVtxBRRkU0&feature=plcp Was wondering how this guy was figuring the output voltage (2.7/cap)? Does one just stick a voltmeter on the end of the capacitor?

So I've decided to finally stop watching youtube videos and start experimenting with electromagnetics. I'm just going to start off with some different gauges of magnet wire, some magnets and iron rods, and a multimeter, but my problem is my power source. Is there anything that I can just plug...

Homework Statement I'm studying for my GCSE exam and I need to know how changing the voltage across a bulb affect it's power output for my secondary evidence, i have searched the internet for the answer but can't find anything. Anyone know how it affects it OR any useful websites to use...

I just want to ask a simple question to experts here. Can superheating of steam increases efficiency and output of thermal power plants?

Hello, My name is Jon Proietti and I am an intern at a digital signage company. We've been looking into the possibility of using full color LCD displays outdoors. We want to increase the light output through the LCD so that it will be more easily visible in direct sunlight. We purchased a...

I have attached the image of the clipper circuit below. When Vin is positive the diode is reverse biased and the output and input are at the same loop. When Vin is negative the diode is forward biased and Vo=0. My problem is finding the sign of the output, although I know that Vo and Vin are...

I have attached an image of a clipper circuit below. First Question: When the sinusoidal input is positive or negative, how do i know how to label it in the

Homework Statement This is a relxation oscillator that's realized by UJT. The graph is included. What is the output of the circuit? http://img821.imageshack.us/img821/2274/ujtok.jpg Homework Equations http://www.allaboutcircuits.com/vol_3/chpt_7/8.html The Attempt...

I just built a transformer to the specs of the original. The transformer has a turns ratio of 1:16. Input to primary is 12V. The problem I am having is a very low voltage at the secondary side. The no load voltage was the highest (40V) that I have got out of it so far. The primary coil...

Hi all ! This is a weird problem. A simple program to read a file and display it works differently when compiled with different versions of the same compiler. When I compile it as: garbageij@garbageij:~/NMA$ mpif90 exp4.f90 and run it, it gives the correct output. But when I compile it as...

Vo=? In terms of the given. This is the attached figure

Hello everyone! This is my first time posting here and I hope I can make a good first impression, and I apologize for the lack of links because of this being my first post. Currently I am working on a project for my grandfather's engineering business, and part of this project is designing a...

If we have a input voltage that has a voltage higher then the linear region of the amplifier characteristics graph, what does amplifier biasing exactly do to the wave so there is no clipping, distortion or cut-offs and saturations.

Hello all, I've been having problems regarding this attached clipper circuit and its output; i don't understand how the first part remains zero in the output wave form, isn't the dc source -2V here?, if it is then in the 1st positive half cycle AC would turn the diode on but not DC since...

I get that collector current is fixed so as collector current goes up, the voltage drop across the collector resistor goes up and the collector-emitter voltage goes down. Which is why it is basically zero at saturation. But for ac it is not zero but negative when input is positive. why is this...

I get this example from >>help eval and add a semicolon.for n = 1:12 eval(['M' num2str(n) ' = magic(n)']); end The above commands display all 12 magic square. How do I suppress the output? I only want MATLAB to assign the variables not display them.

Hello all FORTRAN geeks and geekettes, I was wondering if there is a way to get different colors for each word in a print/write statement? For example: WRITE(*,*)'This is my test sentence' Can I get each word in this write statement to appear as a different color in the terminal...

I ran into a kind of strange thing today while coding. I needed Pi in a program, so I used 2*accos(0.0) to pull it out, but my answers were slightly off. I checked the Pi calculated and it was off after a few decimal places. "Odd", I thought, and just decided to put in Pi as an assigned number...

hello.im having project to find neutron flux from cf-252 using mcnp.but I am stuck at the output that i dono have to convert it to become flux.help please.

I'm somewhat new to Matlab and am having issues with a nested "for" and "if" loop. My code is below. This code is combining a binary signal with a cyclic one. I'm trying to create a matrix with the amplitude condition in the first column and in the second column I want the sum of the number of...

Greetings, According to Faraday, a single phase generator ideal output voltage is: V = N*A*2PI*RPM/60*B Then should a three phase be: V = N*A*2PI*RPM/60* B * SQRT(3) ? I'm trying to build a spreadsheet to get ballpark numbers for simple variable speed generator design, but having difficulty...

Homework Statement A 500W heating unit is designed to operate on a 115V line. If the line voltage drops to 110V, calculate the percentage drop in heat output.Homework Equations R=V^2/PThe Attempt at a Solution P=V^2/R Use V=115, then use V=110, use Power P=500...but not sure how p.s. I am a...

Homework Statement For a transformer, the ratio number of turns on the transformer secondary : number of turns on the transformer primary = 21 : 1200. If the input voltage is 120V AC, what is the output voltage? Homework Equations \frac {N_{P}}{N_{S}}=\frac {V_{P}}{V_{S}}...

Greetings to all, I am reading datasheet for a Schmitt trigger 74LS14 and don't understand the exact meaning of "output current". ti.com/lit/ds/symlink/sn74ls14.pdf It says: IOH High-level output current MAX –0.4 mA IOL Low-level output current MAX 8 mA Does not say anything...

Homework Statement Given transfer function : H(s)=Vo/V1=(10/s)/(4+0.4s+(10/s)) and the input voltage is given as V1=10(u(t)-u(t-0.1))V. Use the convolution integral to find Vo for t>=0.1 Homework Equations convolution integral..its hard to write and laplace table The Attempt at a...

Homework Statement An LTI digital system with impulse response h[n] = 2(1/4)^n u[n-1] produces an output y[n] = (-3)^n u[n-1]. Determine the corresponding input x[n]. Homework Equations I believe that Y[z] = X[z]H[z] The Attempt at a Solution So I started by finding the...

I built a clock generator using a 555 and I fed the output to a high pass filter. It works for the most part, BUT the input voltage ranges from 0 to 5V while the output is -5 to 0 V. I can't figure out why this is happening. I'm new to EE, so bear with me.

Hello, I am new to this site and thought I would give this a shot. All my experience is in low volatge DC circuits and don't have a whole lot of experience dealing with AC but I am trying to learn. My boss and I are working on an experimental generator with 24VDC input but AC output...

Hello, I was trying to derive the transfer function of a simple inverting op amp topology, incorporating the output impedance, Ro, of the non-ideal op amp, to see how it, when combined with a load capacitance can induce oscillations (or at least ringing). I haven't been able to get a valid...

Homework Statement I am supposed to find the circuit design for a first-order low-pass filter. The filter must be made of resistors and capacitors only (no inductances). Furthermore, the output voltage must be measured over a resistor or something in parallel with a resistor. Homework...

I felt like learning a bit about file input and output in C++. Tried some code, couldn't get it to work unless I made the path to the file a string literal, not a variable type. Why is this, and is there any way to get a string data type to be inputted as a path?

Is the output from a transistor sensor circuit analogue or digital? I know that you sometimes need a pull up or down resistor due to a very small current flowing through the transistor even when it should be off. However, in the circuit shown below for example, is the output signal analogue or...

1. In the Khan academy video I watched on partial derivatives, I understand absolutely everything except for the last 20 seconds which confused me. http://www.youtube.com/watch?v=1CMDS4-PKKQ Using the formula: Z = x² + xy + y² @z/@x = 2x +y x=0.2, y=0.3 2(.2) + .3 = .7 What...

Homework Statement So I'm doing a string/wire telephone experiment where I'm using a signal generator to vibrate a wire at a certain input frequency. I am then taking results down for the Amplitude output. I'm not quite sure on the relationship between Stiffness constant K and Amplitude. I've...

Homework Statement Write a routine that accepts two integers i and j as arguments, calculates the quotient and remainder of i and j, and generates a string in memory that stores "The quotient of i and j is i/j and the remainder is i%j". For example if the arguments was 15 and 7 the string in...

Homework Statement The experiment in my Physics lab today was to determine the mechanical advantage and efficiency of various pulley systems. My calculated work output is higher than my work input, which is causing an abnormally high value for efficiency, and I am attempting to find the source...

At output of LM324, 50 mV low frequency (Around 5 to 10 Hz) oscillations were observed when it was used as attenuator for pure DC application...what could be the reason?

Question: IF x is A AND y is B THEN z is C where A=0.1/1 + 0.4/2 + 0.7/3 + 1.0/4 + 0.6/5 + 0.2/6 + 0.1/7 B=0.3/1 + 0.8/2 + 1.0/3 + 0.6/4 + 0.5/5 + 0.3/6 + 0.2/7 C=0.3/1 + 0.5/2 + 0.7/3 + 1.0/4 + 0.8/5 + 0.4/6 + 0.0/7 Find the fire strength and evaluate output z: a) for x which is a...

http://img220.imageshack.us/img220/6523/adcon.jpg All is detailed in this image. Is something invalid here?

Hello, The speed of wind generator and its voltage are constant. The power needs to be constant, so does the magnets. The clue is to increase the current generated, how it can be done without altering the voltage, geometry or the speed? Thanks in advance!

I need your help in understanding the concept. Actually, I am trying to understand the grounding concept here: Attached is the snapshot: Hi Folks, I need your help in understanding the concept of how to measure the output voltage. 1. Initially, I tried to monitor the voltage...

Just trying to check myself, as 14 bits doesn't seem to make sense...so I want to see how does it make sense. Is what written at the title true?

Hi, I'm trying to find a differential equation (first OR 2nd order) whose output could be a Fourier Series of a fundamental frequency input... So It will be a "forced" ODE. That is, I want cos({\omega}t) = L[x(t)] where L is some operator on x(t) such that the solutions in x(t) are...

I have this Sony Laptop, the adapter has the following specifications: These are the input and output values of laptop charger. 19.5V written in bold on top Input:100-240V~1.3A 50-60Hz Output: 19.5V---4.7A, the dotted line also has straight line above it, I don't know what's that symbol...

Homework Statement Given: Impulse response: h(t) = u(t-1) - u(t + 1) (where u(t) is the unit step function) System input: x(t) = t*u(t) - t*u(t-2) Determine System output: y(10) = ? y(1) = ? max y(t) = ? |y(t)| is max at t = ? Homework Equations Convolution integral? y(t) = -∞∫∞...

I've been using a calculator and did end up with the answer in the form of 5.34588e-012 or something like that. I was learning Matlabs where I did sin(pi)=1.2246e-016 I'm not into how did sin(pi) go equal to 1.2246e-016 but what does 1.2246e-016 mean ? I googled it and someplace it wrote...

What is the equation that relates the angular velocity of an alternator rotor with its output electrical power, voltage and frequency (not necessarily just one equation) . And for a DC generator? I know that when you calculate the power generated by a turbine you multiply its efficiency of...

Hi! I am using a Arduino Duemilanove with ATMEga328 for my project. I need an input of 0-20mA into a speed indicator. I know that the Ardunio pins have a current output of 0-40 mA and was wondering if I could use one of the pics to input 0-20mA into the speed indicator. I know that directly...

I have a pump that puts out 396 gal/hr of water. The output pipe on the pump is 9/16 inch in diameter. Is there a way to calculate the psi?

as titled.