Electronic circuit Definition and 30 Threads

Hi, I would like to discuss some details about the Trellis Coded Modulation (TCM) used on 1000BASE-T 802.3ab Gigabitethernet IEEE standard. Is this the right place to do that ? Thanks.

All I need is for someone to look at my schematic and tell me if this circuit will work. Thanks.

Hello guys! I'm just a begginer student. I found this circuit of a wattmeter that works only with resistors. Can someone explain to me how the 33k resistor give a voltage of 1 mV to 1 Watt? I did not understand why these resistor values has been chosen and why the it measures only in the 33k...

Homework Statement Hello, I have got input from comparator op amp which gives HIGH or LOW. Based upon that, one of two LEDs needs to light up. Two LEDs should't be ON at the same time. Calculations are not needed, only the schematics. Homework Equations None The Attempt at a Solution I am not...

I have a homework question that asks me to draw up a truth table for the attached circuit. As you can see I did this (I think correctly). There is also an attached question asking what function the circuit serves - I am not sure what function this is Any pointers appreciated.

Well let me explain. I've finished a circuit that consists in a microcontroller unit (in this case a PIC16F877A) that is connected to a LCD module, a keyboard and a RTC module (via I2C protocol). As far as I know all of them require VCC (=+5V) for operating so I needed to create a +5V regulated...

In my physics textbook it says that ammeter in circuit C shows higher current than ammeter in circuit A and D. And the voltmeter shows higher voltage in D than in B, and C. It's explained in the book that way: some electric current is passing through the voltmeter in C, thus the ammeter will...

I'm building an electronic circuit breaker as follows, I have some questions about the short circuit protection. I tested it in simulation and it trips in about 11 ms. How would I work out the interrupt rating ?, which I read is the maximum short circuit current the breaker can interrupt...

Homework Statement I have to find Vo in every diode state possible. We know diode Vf = 0.7 Homework Equations Va-Vc < 0.7 = diode OFF Va-VC > 0.7 = diode ON The Attempt at a Solution State 1: if D1 OFF and D2 OFF Vo will be equal to Vi State 2: if D1 OFF and D2 ON Vo will be equal to...

Homework Statement A step voltage of 120v is applied to a series CR circuit. R = 20KΩ, C = 4µF 1. Deduce, using Kirchoff's voltage law and Laplace Transforms, an expression for the transient circuit current. 2. Using the equation obtained in 1. deduce the equations for the transient voltages...

Homework Statement finding the resistor and current which is following through the circuit[/B]Homework Equations kirchhoff law The Attempt at a Solution almost as fig 1 ( 9v=3.458 mA and 12v=11.122 mA) fig 2 (9v=1.472 mA and 12v=12.882 mA) i3=2.48 mA

Would anybody pleas tell me what's the difference between fine and coarse measurement? I am reading a paper named "Electronic distance measurement-An introduction" in which fine measurement and coarse measurement is mentioned. here is the exact paragraph: "The transmitter includes a master...

Why we use the symbol ground in electronic circuits? What is the use of grounding

So, recently I started learning about electronic components and then I started learning about semiconductors. The one which I've been having some real trouble to understand its function is the transistor. So I bought an electronics textbook called El ABC de La Electrónica (The ABC of Electronics...

greetings, how a inductor and capacitor can perform differentiation and integration respectively? any help would be appreciated .

Homework Statement C = 4 μF L = 0.2 Hy E is DC current. No internal resistance. Write an expression the the laplace plane transfer function, that relates current (that flows through resistor R) to the voltage E. (There is another question. I will just address the first one for...

Homework Statement http://img689.imageshack.us/img689/6668/mycircuit.jpg Given a circuit that includes Operational Amplifiers, double-switch - S, for two situations, 1 and 2. Type of switch - DPDT - Double pole double throw. Two diodes and two lightbulbs, L1 and L2. Given: Voltage...

I want to create a project which involves about 5 Peltier cooling units run off a battery. The problem is, I have no clue what type, or the specifications of the battery. The cooling units run between 0-15V and 0-9A. I want this circuit to be able to run at maximum capacity continuously...

Homework Statement Construct a circuit that turns on if it the voltage provided is greater than 3 volts, or less than 2. MUST USE THESE CRITERIA: i<100mA, only one PS. Fewer than ten components. Homework Equations None that I know of, but we've covered resistors, caps, inductors, and op amps...

Hi, I'm designing and building a mobile robot, however I have to find / design a circuit board that incorporates two motor outputs, and possibly 8-12 sensors. The circuit also has to be a PIC, to allow me to program the robot to carry out specific tasks autonomously. I have 0% knowledge on...

term "ground" mean in an ELECTRONIC circuit? What does the term "ground" mean in an ELECTRONIC circuit? A bus strip usually contains two columns: one for GROUND and one for a supply voltage. What does ground mean in this context and how do we ground a circuit while using a breadboard?

i wonder if anyone can tell me the meaning of "The Barkhausen stability criterion is a condition to determine when an electronic circuit will oscillate." in this what is the meaning of an electronic circuit will oscillate? thanks

Dear Experts, I opened up a small radio about the size of thumbdrive. The circuit is so small. Is there a way to shrink a 555 timer chip which is so big compared to that radio? Radios should require transistors right? But I could not find the usual size transistor on this radio...

Hey guys, I'm going to university next year to complete a degree in electronics engineering and I'm hoping to get a head start. Ok I've attempted to read several online materials to try and create a mental model of what occurs in an electronic circuit. Let's assume its a basic circuit with a...

I am in an electronic circuits laboratory class, and I am looking for a free, easy to use program that will allow me to construct circuit diagrams for my reports. Any ideas? Thx!

Am I starting this correctly: (look at pic)

Q1. A 10,000 Micro Farad capacitor has an asymmetric tolerance specification of +20%/-50% What is the possible range of values for this capacitor? How do I do this problem ? Q2. A 15-bit A/D converter has V(full scale) = 10 V. what is the value of the LSB> If the input voltage is 6.83 V...

I NEED A DATASHEET OR LIST OF ABOUT 50 EACH OF RESISTANCES, DIODES, CAPACITORS, ZENER DIODES AND ICs WITH SPECIFICATIONS LIKE VOLTAGE, CURRENT AND POWER RATING, COMMONLY USED IN ELECTRONICS LABORATORY OF COLLEGE LEVEL I NEED IT URGENTLY WITHIN 12 HOURS

http://up4.w6w.net/upload/17-03-2006/w6w_2006031704465627806cb7.JPG for the following circuit find and draw V(out) if the V(in) signal is a sine wave with amplitude of 10V (Consider all diodes to be ideal) This is the problem , could anyone please solve it 4 me ?:?: 10x

i'm really into electronic but right now i have a limited knowledge of electronic circuit. Is there a place that has basic electronic projects that I can built and learn at the same time? I like the projects at http://www.aaroncake.net/circuits/index.asp but they're too advance for me. Do u...