What is Electric circuits: Definition and 135 Discussions

The Electric VLSI Design System is an EDA tool written in the early 1980s by Steven M. Rubin. Electric is used to draw schematics and to do integrated circuit layout.
It can also handle hardware description languages such as VHDL and Verilog. The system has many analysis and synthesis tools, including Design rule checking, Simulation, Routing, Layout vs. Schematic, Logical Effort, and more.
Electric is written in Java, and was released as part of the GNU project in 1998 under the GNU General Public License.
In 2017, Electric development ceased, but support and bug fixes continue.

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  1. J

    Calculate Equivalent Resistance in an Equilateral Triangle Electric Circuit

    Homework Statement Three 66.0 Ω resistors are connected across the sides of an equilateral triangle ABC as shown in the figure. What is the equivalent resistance between any two points AB, BC, AC of this circuit? Homework Equations The Attempt at a Solution I don't understand...
  2. A

    What Happens to Electric Circuits When Exposed to Noise?

    I'm trying to find how simple electric circuits behave when the input is a random signal or noise. I'm wondering if anyone is familiar with this area or know of any resources they can point me to. Thanks in advance,
  3. N

    Any light software to draw electric circuits?

    I need to include an electric circuit diagram in a .doc file,but I can't find a software to draw it quickly.Does anyone have any good idea?I don't want to use Protel since it is too large
  4. J

    How do electric circuits work?

    Hello,I have a problem with electric circuits .Can someone explain method of potentials,method of contour currents,3 terminals:triangle and star . .Sorry for my bad language.I need information and i don't have equations attempt at a solution.!0x a lot
  5. R

    Electric Circuits Homework Help

    Homework Statement What does it cost in cents to leave a 1800 Watt electric oven on for 7 hours? Assume that you pay 10 cents for every kilowatt hour which you use.Homework Equations Well i don't know if I am supposed to use P=E/t. i don't know how I am supposed to use it The Attempt at a...
  6. R

    Electric Circuits Homework Help

    I don't have much of a homework problem that i need help with, but the homework requires us to use a equation ... P = E / t there is a little triangle before the E i don't know what it means Thanks for help
  7. S

    Engineering Superposition Question, electric circuits

    Homework Statement ^^^^ = resistor = 10 ohm <> = 3*Vab Dependent voltage. (the voltage equals 3 times Vab) 0 = voltage source 4 v (inderpendant) o = Inderpendant Current source 2 A |--^^^^---<>---------a + | + + - | 0 o Vab | -...
  8. D

    Electric Circuits: Voltmeter Reading Same/Different?

    Homework Statement No problem just wanted to clarify something. Would the voltmeter reading be the same or different in the two circuit diagrams below.? http://img16.imageshack.us/img16/9428/circuit1.th.gif http://img37.imageshack.us/img37/3300/circuit2.th.gif Homework Equations...
  9. R

    Solving Electric Circuits: 9V Battery, AC/DC Voltage & More

    I ran across this question on another site but I didn't understand the answer that was given. The question asked that if we have a circuit that connected the positive terminal of a 9V battery with the negative terminal of another 9V battery but not connecting the battery together, why would...
  10. P

    Solving the Mystery of Dim Light Bulbs in Series Circuits

    Hey guys, I've just starting learning about electric circuits at school and there's something I just can't seem to get my head around. If you have two identical light bulbs in a series connected to a battery, the brightness of both the bulbs is the same. However, both bulbs are dimmer than if...
  11. K

    Electric Circuits Homework: Solving for Energy Delivered to Battery

    Homework Statement A battery charger is connected to a dead battery and delivers a current of 6.0A for 5.0 hours,keeping the voltage across the battery terminals at 12V in the process.how much energy is delivered to the battery? Homework Equations R=I^2RT The Attempt at a Solution...
  12. N

    Question on the constant current in electric circuits. [ Not homework ]

    Hi I'm new here and have this question I would like to ask. Sorry if I posted in the wrong section! My level of education is not high so please forgive me for this simple problem, though not simple to me. Q: Why is it that in, for example, a series electric circuit that the electric current is...
  13. I

    Solve Electric Circuits Homework: RT, Vdrops, I, P, VTerm

    Homework Statement Find all of the following for the following circuit. Resistors R1 and R2 and R6 and R7 are in series. While resistors R3, R4, and R5 are parallel. Given information: ε = 15.0V ri = 0.25Ω All other R's = 2.0Ω 1)RT or R[total] (this includes the ri) 2)Vdrops...
  14. D

    Electric circuits problem (diagrams included)

    Homework Statement http://img522.imageshack.us/img522/9016/circuitsel3.jpg http://g.imageshack.us/img522/circuitsel3.jpg/1/ Basically I need to find the brightness of the labelled lamps relative to the original lamp. It is lamps c&d and g&h which are causing me the most trouble...
  15. Y

    Electric Circuits, Kirchhoff's Rules

    The question: Suppose point A is grounded (V = 0) in Figure 21-36, in which script e = 16 V and R = 11 . Find the potential at points B and C. Here is the diagram: http://www.webassign.net/walker/21-35alt.gif I'm pretty sure that I have to use Kirchhoff's rules in order to solve this problem...
  16. S

    Engineering Problem 3.6-20 pg 96 intro to electric circuits dorf 7th edition

    I have done the equation from this textbook, but I have no way to get the exact answers to confirm my answers. I really don't need to know how to get the answers. I just need answers to confirm them with. If you can show how to get it that is fine as well
  17. S

    Engineering Electric Circuits: Current & Charge in 30 Secs

    Homework Statement If the current in an electric conductor is 2.4A, how many coulombs of charge pass any point in a 30 second interval? Homework Equations A = C/s The Attempt at a Solution I just want to make sure that I am doing this right. If my current is 2.4 A then I can write...
  18. S

    How Much Energy Does Leaving Car Headlights On Drain from a 12V Battery?

    Homework Statement If you accidentaly leave your car headlights (current drain 5A) on for one hour, how much of the 12-V battery's chemical energy is used up? Homework Equations Well, there's Ohm's Law...and it's million forms The Attempt at a Solution First things first, I'm...
  19. C

    Electric Circuits: Why Power Rating of 2x 1000-W Heaters in Series is Not 2000-W

    Homework Statement The power rating of a 1000-W heater specifies the power consumed when the heater is connected dto an AC voltage of 120 V. Explain why the power consumed by two of these heaters connected in series with a voltage of 120 V is not 2000-W. Homework Equations P= (V)^2/R...
  20. B

    Electric Circuits (resolving them)

    "you have four identical resistors, each with a resistance of R. You are asked to connect these four together so that the equivalent resistance of the resulting combination is R, How many ways can you do it? There is more than one way. Justify your answer" I can only think of ONE way to do...
  21. S

    How long can a 1.5 V battery light a flashlight bulb drawing 0.6A?

    Homework Statement You'll have to forgive me... I've got some rather poor Physics books with which to consult, so this may seem rather simple. I think I understand the concepts but I don't think I have all of the information from my sources to answer this problem. A 1.5 V battery stores...
  22. S

    Electric Circuits: Voltage Distribution in Multiple Resistor Circuits

    For a single resistor in a circuit all of the voltage is lost across that one resistor. But when there is more than one resistor in the circuit (in series or otherwise) the voltage is distributed according to the resistance of each resistor. Why is it that all of the voltage is not lost over the...
  23. S

    Electric Circuits: Intro Book & Class Reviews

    I was just wondering if someone knows of a good intro electric circuits book. My professor told us that there was no need to go out and by the book because he felt it is useless, and he also feels we shouldn't need a book. I have been reading a bunch of reviews of it and most of them arent good...
  24. S

    How Should Time Be Entered in Circuit Power Calculations?

    Homework Statement I have to give the power being absorbed by the circuit element. There's a picture. This is an easy problem. They give me the current flow in a function of time, the voltage is also in function of time. The time in which I require to give the power is at 2ms. The function for...
  25. B

    How do you calculate current in a changed parallel circuit?

    http://feat.putfile.com/profilepics/main/4/bobthebus-1313021205.jpg Well this is my question, its not really homework or anything. I am just curious as to how you would do this. I was thinking that it would change at all. Since in a parallel circuit all the currents add up to the same number...
  26. J

    Electric Circuits Book: Intro to Electric Circuits 7th ed. Dorf/Svoboda

    I am taking an electric circuits course using Intro to Electric Circuits 7th ed. by Dorf/Svoboda. My professor mentioned something about a manual that you can buy that has mainly just a lot of different circuits all worked out for you to study, does anyone know where I can get this because the...
  27. O

    Electric Circuits: Understanding Series Circuit with Three Resistors - HELP!

    electric circuits-- HELP! Ok, so I have a quiz on this material tomorrow and I am thoroughly confused. My teacher gave us review problems and I keep getting them wrong. One of them was: Answer the below questions for a case in which three resitors are positioned in a series with a battery and...
  28. M

    Nice and tricky question on electric circuits

    Hi, this is a very nice but (at least for me) quite confusing problem on electric circuits: Before you read this, it will be helpful to have had a look at the attached picture (sorry - the quality is quite nasty) _______ By considering each half of the circuit on the left below as a...
  29. I

    How Do Differential Equations Model Electric Circuits in Medical Devices?

    Hi Guys... I'm trying to learn diff.eq on my own and I'm stuck on a problem and I don't even know where or how to begin: the problem is: the pacemaker shown in the figure (first attatchment) is made up of an electric battery, a small capacitor, and the heart which functions like a resistence...
  30. H

    Exploring the Limitations of Ohm's Law for Electric Circuits

    Why is Ohm's Law not an effective method for solving some electric circuits?
  31. A

    Electric circuits problem (RL/C circuits)

    when solving a RL or RC circuit, what's the easiest way to tell if it is a natural response problem or step response?
  32. K

    Electric Circuit Problem Help: Understanding Emf, Current, and Terminal Voltage

    Diagram The answer is A and i don't really understand why that is so. I am thinking that since Emf - Ir= Vterminal. The current must go up but i am not sure exactly why is that happening. I've read through my handbook but can't seem to find anything on this type of problem.
  33. maverick280857

    Symmetry Method in Electric Circuits

    Hi Could someone point me to a comprehensive resource (either book or website or both) which explains the method of symmetry for the solution of simple resistive electric circuits? Thanks and cheers Vivek
  34. S

    Analyzing an Electric Circuit Problem with Resistors and Capacitors

    My Physics teacher sent this out as a difficult problem, to us at least, to impress her if we could find the answers. Thanks for just guiding me on it; i don't want someone to do it for me, but rather, id just like someone to start me out basic Physics stuff i know: Ohm's Law, Parallel...
  35. S

    Electric Circuits: Series Voltage, Parallel Voltage & Open Circuits

    In electric circuits, you know how parallel voltage is the same throughout, but series voltage adds up to the supply. What if there is a battery connected in series to two resistors. However, what if one of the resistors continues on parallel. How, then would u find the volts of the solo...
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