Output Definition and 1000 Threads

I am having trouble pinning down why the relative permeability of a transformer core will not directly affect the output voltage. In fact the voltage is determined by the turns ratio and is independent of mu of core material. Given this where is the flaw in the following reasoning: Induced...

Homework Statement Hi all! I am been working on an EEI. Basically I recorded the power output (P=VI) of a wind turbine with the blades at different angles. I went from 0 degrees (flat) to 180 degrees in 15 degree increments. Averaging the data I see a graph like this: Also, just to...

1. Homework Statement Determine the output if this signal is processed by a filter with the following transfer functions: u= \sum_{k=-\infty}^\infty c_n*exp(j*\pi*n*x)= \sum_{k=-\infty}^\infty rect(x-2k-.5) c_n = 0 for even = 4/(j*\pi*n) for odd Determine the output if this signal is...

How do you calculate Vo using PNP/MOSET? What principles are used please?

I'm having a really hard time understanding input vs. output impedance and also the usefulness of the Thevenin model. Let's say we have a simple voltage divider consisting of two equal resistors. The output voltage is between the resistors. If the input voltage is 10v the output voltage has...

The circuit in the figure is driven by a 9 mV amplitude signal generator with an output impedance of 2 kΩ. What is the output voltage amplitude from the amplifier? So what I did basically is use the formula Vout = -R2/R1 x Vin So.. I know Vin is 0.9 V (9mv) and R2 = 12 R1 = 1 that...

Homework Statement I need to find the output voltage mathematically or graphically Homework Equations The Attempt at a Solution My approach : as long as the Vi is < 9.3 V , the diode D1 will be ON because in that case VA will be < 10 V and current can flow through 10k resistor...

please tell the output voltage mathematically or graphically

hello, I'm super noob. My understanding is not yet clear. it sounds like folks here are describing current as something that's output by the transformer, but i thought current does not exist until there's a load. so my question is, how big of a load can it handle (not sure what 'big' really...

Hi, I am trying to compile a code that should work fine, but I am getting errors and also some odd characters are printing on the screen. This is the output: ENTER INPUT FILE NAME (INCLUDE EXTENSION NAME) blisw.inp YOUR INPUT FILE IS blisw.inp...

Hi guys~ I'm currently learning C and we've been asked to write a code where a decimal-system number gets converted to its corresponding binary form BUT, you know, when we do it manually by the 2-division method how the order of the binary numbers go from down to up...? yeah that is the part...

Let say I have a 3 phase ac motor rated at 40 hp. Now I'd like to be able to convert this to act as a single phase induction generator (I hear is possible but I don't know much about it). driven by an ICE at around 1800 rpm. What would its power output be in kilowatts. Or more importantly...

This is the troublesome part eLeftOutFile = 'data/ElonL'//fileNameSuffix(0:25)//'.dat' OPEN(754,FILE=eLeftOutFile,STATUS='REPLACE',ACCESS='SEQUENTIAL') First off, fileNameSuffix is a CHARACTER(len=40) just to be safe, I am just cutting it off, since those are the relevant parameters...

Homework Statement For the state table shown below, show the output sequence when the input sequence is as given below. Assume the machine starts in state A. x : 1 1 1 1 1 0 1 1 1 0 1 1 0 0 1 1 1 1 0 1 1 z : x>0...1 A A,1 B,0 B A,0 C,1 C D,1 A,0 D A,0 B,1 Homework Equations N/A The...

hello there! i need to get the integer part of the output of a division in MATLab i.e. 23/5=4 (and the remainder is 3) what function should i use?

I am currently building a circuit that produces a 200khz signal with a potential difference of 3 - 12 volts, depending on the force applied to a strain gauge. The input voltage is a 12V, 50hz source. With no force applied to the strain gauge, the output is to be 3V and 12V at breaking force...

edit: you aren't proving it's LTI, you proving it COULD be lti Homework Statement the question: could the following system be LTI? x(t)=-5cos(2t) --> y(t)=exp(-2tj)Homework Equations the chapter is about eigenfunctions of LTI systems, which are of the form exp(st).The Attempt at a Solution So...

I need help understanding how frequencies are distributed when taking the FFT of an Image and how can i determine those frequencies, I really need a detailed and easy tutorial with practical example to understand it. When we take the FFT of a Sine/Cos wave we can easily see its frequencies in...

To increase a DC generator's turning effect, we increase the number of turns of the coil. How does this increase the turning effect? Will it concentrate the field lines or will the force acted on each coil be added to each other to increase the force on one armature? I think both happens because...

Hi all, So I have a program that calls a module that contains a subroutine so I can make a matrix. When I write the matrix in the subroutine (commented out part in module) I get the right output, but when the main program tries to output it is some insanely small or large numbers. I am new to...

I am reading audio output transformers. This is a paragraph from RDH4 and I don't understand where the formula of L_0\; come from. Please see attachment.

Matlab fprintf "%" usage in output data I want to save data into a textfile, but I will again need MATLAB to read that text file, in which case, I would like to have my header-text of the data table begin with '%" so that when I am reading from than file, MATLAB will ignore header. I am...

I have a question, how can I make an output file that takes the name of the input file and replaces the .txt extension with "_out.txt"? For example, an input file with the name “new.txt” would result in an output file named new_out.txt”. my friend told me to use strcat, but that just adds...

Hello, I'm studying BJTs and I have a doubt about deriving the output resistance in the small signal equivalent circuit. Let's consider the circuit below: To derive the output resistance, I'd write the following KCL: i_x = i_{rc} + i_c at this point, every example I've seen says R_o = R_c...

hi all, Currently I am doing 2d fdtd (TMz mode) modeling. I expect to have output for Ez, Hx and Hy in one file, which is mean that the output will be in 3 column. But I don't have any idea how format it. Anyone can help me? Below is the code !problem 3.9, Taflove chapter 3 !to model 2d...

A couple questions: I'm in the process of making some small amplifiers and using bjt's in the small signal realm. I have used bjt's as switches for quite a while, so I am quite familiar with their basic operation. I was reviewing small signal analysis trying to refresh my memory about how...

Homework Statement Given that the variables A[2:0] form a three bit grey code to represent numerical values: i) Write down all binary combinations for A[2:0], in ascending order of numerical value ii) A three bit grey code to decimal decoder is to be designed, where the outputs X[0:7]...

Experience and conventional wisdom say that whenever there is a really good idea ready to makes its entrance it often occurs to several individuals or groups. That might be happening, or going to happen, with online cosmic model calculators. So I'm hoping to hear comments about this including...

Homework Statement A coal power plant with 30% efficiency burns 10 kilograms of coal per day. (Take the heat of combustion of coal to be 30 MJ/kg) a) what is the power output of the plant? b) At what rate is thermal energy being discarded by this plant? c) If the thermal energy is carried...

Hi I am trying to design something similar to a NOT-gate (very simple), and I have been following this figure: http://en.wikibooks.org/wiki/File:Electronics_TTLNOT.PNG. My question is the following: Say that I instead of grounding the lower branch want to send a current through it to e.g. a...

I am making a totem pole digital output of 1.5-23v. i was searching for a protection circuit for the output short to ground and +24v dc. please help me out by sending a diagram of the circuit if possible.

[b]1. The surface temperature of the sun is approximately 5800K. Given that the radius of the sun is 6.96x108m calculate the rate of energy output of the sun, taking the sun as a blackbody. [b]2. H = εσAT4 [b]3. Surface temp = 5800K, Radius of the sun = 6.96x108, Emissivity of a...

Greetings, I'm obviously new to the forum here so greetings to everyone. I am here because I have a problem with some equipment relating to my job and I'm trying to learn as much as I can about it and the effect that it is having on our equipment. I'm not looking for a 'solution' so much as...

Hello fellas. I have this formula that encodes data: OUTPUT = (Data * 7) + (Data * 2) + 8 So in this case, if I have the OUTPUT, what is the data. What formula can I use if I have OUTPUT to get Data? Thanks much!

I'm writing a scientific paper and I need to put in some partial differential equations ...I can generate a latex code for them using a software called 'texmaker' but in order to make them presentable in the form of proper partial differential equations, I need to see the output of the latex...

What is wrong with my code? #include <stdio.h>int main(int argc, char *argv[]) { int i=0; FILE *fp; char fname[100]; sprintf(fname,"%04X.txt",i); fp=fopen("fname", "w"); fprintf(fp, "hello world!\n"); fclose(fp); }

help! Input output characteristics of BJT I have attached an image of the graph. Does this graph apply for both npn and pnp transistors. I have asked this because for pnp, the collector(c) and base(B) terminals must be reverse-biased at the active region, and B must be at a higher potential...

Meaning of "Scaled" and "Inverted" in context of picoammeter analog voltage output I'm trying connect a picoammeter to an oscilloscope, and I noticed that its analog voltage output was described as "scaled" and "inverted". I'm just curious as to what that means about the oscilloscope is going...

Hi, its been some time since I did C prog (its not my field), but I do recall somethings from what I did 4 years ago. What would be the output of the below prog (I know its a simple one), but I think it would execute for i = 5,6,7,8,9,10 (6 times), the printf statement. Yet some of my...

I need some clarification regarding the following formula: Qconv = Pn x Qs x b x ϕ this equation is used to determine the cooking appliance's convective heat output in kw, 'b' and 'ϕ' are coefficients easily determined. I am confused whether to use the actual capacity of the appliance for...

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...