What is Electronic: Definition and 441 Discussions

Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control the spectrum, attack an enemy, or impede enemy assaults. The purpose of electronic warfare is to deny the opponent the advantage of, and ensure friendly unimpeded access to, the EM spectrum. EW can be applied from air, sea, land, and/or space by manned and unmanned systems, and can target communication, radar, or other assets (military and civilian).

View More On Wikipedia.org
Recent contents Top users
  1. A

    Electronic Devices -- Please suggest a book for learning the basics

    Please suggest a book for basics of electronic devices subject.
  2. maverick_starstrider

    Examples of First-Order *Electronic* Phase Transitions?

    Hi, I'm wondering if people could help me compile a list of ELECTRONIC phase transitions, that are FIRST-ORDER, that occur at room temperature and can be driven by things like doping, strain, magnetic fields, etc. rather than temperature. Any suggestions are greatly appreciated. Also, would...
  3. H

    BEng Electrical and Electronic Eng, is Msc Physics good idea

    Hello, this is my first post there though I have been on this site before to look for answers to questions. I am a graduate in Electrical and Electronic Engineer, graduated in 2013 and live in London. I currently work for a engineering consultancy working on telecoms systems work...
  4. E

    Engineering Electronic circuits analysis textbook dealing with......

    Hey all, I would like to ask your recommendation for analogue electronic circuit analysis textbooks ( diodes ,transistors and op amps etc... ) dealing with the following topics Logic gates general description and their application using analogue electronics Op-amps: 1)Non-ideal model of...
  5. M

    MHB Electronic voting system

    Hey! :o I am reading about an electronic voting system from the book Cryptography:an Introduction, N.Smart and I have some questions. The voting system will assume that we have $m$ voters, and that there are $n$ centres which perform the tallying. The use of a multitude of tallying centres is...
  6. S

    Electronic Transition of Atoms

    Suppose we have an isolated H atom. We are looking its electronic transition. If we plot the intensity of the radiation vs frequency then what will be the nature of the curve and why??
  7. J

    Vacuum tubes and electronic oscillators

    I've been reading up about vacuum tubes and (more specifically) the Audion, and how they were used for instruments/amplifiers. This isn't anything I'm learning about on my degree, just things I'm reading up on myself so forgive me if I'm a little slow to grasp some parts. I understand how the...
  8. M

    How hard is 3rd year in Electrical & Electronic Engineering?

    sup guys im currently year 2 studying electrical & electronic engineering. Next year we had to choose modules where it was split equally between magnetics(mainly covered with waves, optoelectronıcs, nano technology and like magnetic materials etc), power(renewable, machine power, a bit of...
  9. 1

    Debye's T^3 Law: Specific heat, Latice and Electronic terms

    Homework Statement QUESTION ADDED AS ATTACHMENT AS NEED TO SEE GRAPH. Homework Equations C = (12NkBπ4/5)(T/θD)3 for T<<θD C = 3NkB for T>>θD The Attempt at a Solution a.)[/B] So I assume the expression for the specific heat as a function of temperature that the question must want: C =...
  10. T

    555 timer IC - Calculating resistance needed

    Voltage = 9.0 V, Current = 20 mA, Capacitor (C) = 10 microF, Resistance before (too high) [R_A = R_B] = 10 k Ohms. In a a-stable oscillator, calculating the resistance needed for two resistors (R_A = R_B) to discharge and charge a capacitor (C) so that a LED does not blow. Currently my circuit...
  11. cbram

    Why Do we ground an electronic circuit?

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

    Question from Ashcroft/Mermin: electronic density eqn

    I'm taking a SS physics course and going through A&M and found something hard for me to understand. It is on page 44, starting with eqn 2.60. Another thread almost addressed my question, but I cannot post replies on the thread (click here). I think I understand what is going on in the 1st...
  13. D

    Problem about electronic structure

    Hello everyone! The electronic structure of CNT is discussed on the basis of band structure of graphene. Graphene has a linear dispersion relation: E = h_cut vF |k| where k is the 2D wavevector and vF is the Fermi velocity. CNTs are macroscopic along the axis but have a circumference of atomic...
  14. C

    Solving Coulomb Barrier: Calculating Energy w/e2 Units

    OK need some help with units. I am trying calculate the energy to surmount the coulomb barrier. the relationship is basic, but I can't remember how the units of e2 (1.440 ev nm) come about. thanks
  15. eis3nheim

    Atoms and energy levels question

    As the atoms of a material are brought closer together to form the crystal lattice structure, there is an interaction between atoms, which will result in the electrons of a particular shell of an atom having slightly different energy levels from electrons in the same orbit of an adjoining atom...
  16. K

    Engineering Electronic engineering bachelor, then MS in electrical?

    Hi I'm new here basically thinking about getting a degree in EE, and the school that I'm interested has electronic engineering instead. Just wondering if I do the electronic engineering bachelor, you think I can still apply for MS in electrical if I don't have background in like power and...
  17. P

    Designing an Electronic Timer Circuit Using NE555 IC or BC548 Transistor

    Dear I would like to design a simple electronic timer circuit by other NE555 IC or BC548 Transistor. I’ve got a circuit but it doesn’t work. Would you please me in this regard? Appreciate, if you would get back to me with tested circuit diagram at your best possible time. Regards Pervez
  18. AustinTahir

    Transformation of electronic audio signal into audible Sound

    Hello Guyz I've got a little Question For Seniors I hope You answer it Briefly , I know that whenever i plug in my USB Drive in my Loudspeaker or plug Speaker itself in my PC and play anything like a song an Electrical audio Signal is Produced which is transformed by Speaker into a audible...
  19. N

    Electronic Steam Tables Programs

    Hi all, Been a while since I posted in these forums. Looking for advice on steam table software package. I am looking for a relatively simple software package to look up steam properties. Preferably compatible with Excel. It at least has to be able to compute SH steam enthalpy as a function of...
  20. T

    Engineering Electrical vs Electronic engineering difficulty

    Hi guys, I have completed my first year engineering courses and about to start my second year. I enrolled for computer engineering but have decided to change to either electrical or electronic engineering. So my main question is which is more harder between the two ? I know the main differences...
  21. E

    How Do Electron Energy Levels Form in Liquids Like H2O?

    DrDu suggested I posted this here. Wiki says that "The electrons of a single, isolated atom occupy atomic orbitals. Each orbital forms at a discrete energy level. When multiple atoms join together to form into a molecule, their atomic orbitals combine to form molecular orbitals, each of which...
  22. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    Hello everybody, nowadays I am working on shaping amlifiers and need guidiance about how to design one and do its simulations before pcb design and manufacturing. When googling about shaping amplifiers i found documents mostly about filters (active and passive), which i know works for rejecting...
  23. E

    Electronic Energy Bands of Liquids

    Wiki says that "The electrons of a single, isolated atom occupy atomic orbitals. Each orbital forms at a discrete energy level. When multiple atoms join together to form into a molecule, their atomic orbitals combine to form molecular orbitals, each of which forms at a discrete energy level. As...
  24. R

    All electronic component works on quantum probability

    If I'm right, all electronic component works on quantum probability. I was thinking all these electronic component works on classical physics only. Because probability will not produce 100% result, as and when desired. Thank you.
  25. N

    Is electronic devices a good course to take for CE?

    Hello. I was wondering if taking a class at college called "Electronic Devices" would be a good idea if I am planning to major in computer engineering. It is not a required course for me to take as far as I know. The description says that it covers "basic electronics laws and components"...
  26. JasonHathaway

    Where Can I Find the Source of These Problems for an Old Electronic Textbook?

    Hi everyone, I need the book of which these problems is derived from. http://postimg.org/gallery/18f6og0ji/275e0c9d/ Any help?
  27. EhtYlno

    Engineering Electronic Engineering vs Chemical Engineering

    Right now I have a choice between these two disciplines, Chemical or Electronic engineering. Which one would remain suitable for me? My friends advice me to get into Chemical Engineering since they say its in a huge demand right now, however I am more inclined towards Electronic Engineering...
  28. U

    A mechanical toy vehicle (w/o electronic)

    Using some kind of launching/propelling system to launch a vehicle (toy size)... The problem is getting the vehicle to turn at a certain point to avoid the obstruction w/o using any type of motor. I've tried to look into zigzag patterns, but they all require electronic motors w/ gear shafts...
  29. S

    Electronic Water Dissocation Via Radiolysis

    Hi, all. Ok, sort of a weird question, and I'm not even sure if I'm asking it correctly, but here goes: First, some background: ====================================== ====================================== According to: Hydrogen Bonding and Orbital Models In ambient atmosphere the O—O in the...
  30. D

    Why are smaller electronic devices more resistant to EMPs?

    According to an Oak Ridge National Laboratory technical report (http://web.ornl.gov/sci/ees/etsd/pes/pubs/ferc_Meta-R-320.pdf ), smaller electronic devices are better able to resist the damage caused by an EMP. I'm at a loss to see why this is true. According to Ohm's law, the current density...
  31. S

    The Case of Electronic structure of Liquid Metals

    I have been contemplating for a few days now about how one could think about the electronic structure of Liquid metals. The cases of an isolated atom or that of solid metal crystal are well known and easy to understand. Though, a google search reveals (to me) that nothing much has come out for...
  32. G

    Is it Safe to Use a Plasma Globe with Electronic Equipment?

    Hey there, I was looking to buy a plasma globe as a desk ornament at work. Problem is, I deal with circuit cards and other pieces of electronic equipment. None of us wear ESD bracelets, so the components aren't extremely sensitive. I was just wondering if the globe would emit a strong enough...
  33. wolram

    Have you tried the electronic cigarettes?

    Do you have the misfortune of a smoking habit? if so have you tried the electronic cigarettes? It has been proposed that they be banned in public places, these cigarettes produce a [vapor] do you think they pose any danger to public health?
  34. Jamesangelo

    Where can i download electronic simulator

    I need help. I want to download electronic simulator for my PC. Something that works just like- allcircuit simulator tool on android.
  35. K

    Why are the electronic configurations of Copper and Chromium exceptional?

    Why are the electronic configurations of Copper and Chromium exceptional? What is so different about them?
  36. F

    How to interpret rotational, electronic, vibrational energy levels

    Hello Forum, I am confused about the concept of rotational energy levels, electronic energy levels, and vibrational levels. A graph of "Energy versus Distance" is usually presented and the various horizontal bars represent the energy levels, which are simply energy amounts. The energy of...
  37. E

    Programs Electronic engineering degree final year project ideas

    Hi, I am looking to start preparing for my final year project in my Industrial Electronic and control engineering degree and I'm trying to figure out a good strong, realistic scope for my project. I'm a part time student already working within the automotive industry. I have one idea to...
  38. T

    Electronic field calculation of 2 wires

    Homework Statement 2 1.2m nonconducting wires meet at a right angle. One segment carries +2.5*10-6 C of charge distributed uniformly along its length, and the other carries -2.5*10-6 C distributed uniformly along it. Find the magnitude and direction of the electric field these wires produce at...
  39. C

    Noble gas electronic configuration

    Homework Statement For the elements in COF2, which noble gas electronic configuration is attained in the Lewis structure. The attempt at a solution I'm guessing that each element has a noble gas configuration of neon. Would that be correct. Any clarification would be greatly...
  40. D

    Power strip causing electronic damage?

    This is a very basic electronics question, so I hope this is an appropriate forum. When an electronic device is plugged into a power strip, does it make any difference to the device whether it is unplugged and re-plugged from the power strip or if the power strip is switched on or off. I...
  41. vead

    Quantum theory and electronic engineering

    I'm an electronics engineering student and I've only had a introductory one-semester course to quantum mechanics, so I don't really have much knowledge on quantum physics I'd like to get more information about the topic Quantum Information in electronics what is real use of quantum theory...
  42. 0

    What is the name of this electronic component

    file:///Users/ruairimangan-cliff/Desktop/Screen%20Shot%202014-04-23%20at%2017.06.29.png what is the name of this component? (Attached) is it a counter. i can't find the name of it. is there an exact name for this type of the component.
  43. N

    What is the best way to learn the basics of electronic components?

    So I have been interested in learning about electronics for a while but I can only find good reading sources for learning. I have a load of trouble learning from reading and I best learn from things like experimentation or being taught. I would like to experiment but at the same time I don't...
  44. M

    Inexpensive Electronic Instantaneous PVC Piping Air Valve

    My boss has a boat load of extra PVC piping laying around the shop and I wanted to use it to make a pipe organ. I need a way to electronically open and close the connections from each individual pipe to the main air supply. I'm on a tight budget and I'll need to make 88 valves in total. I have...
  45. S

    Electronic Communications Degree - Career path

    Hi guys, I'm currently studying Beng Electronic communications engineering. I'd like to know more about the careers of electronic communications engineers. What typical job would I expect to get? The problem is that I really enjoy electronics but have no idea what I'll be doing at a...
  46. 2

    Are Electronic Braking Systems the Future of Automotive Safety?

    Hi there, I'm currently researching for a Product Design project and was wondering if anyone had any insights into electronic braking systems. Are there any current systems being used on general automotive vehicles at moment? E.g The brake pedal represents the pressure of braking...
  47. J

    Most useful programming language for an Electronic Engineer?

    So I'm quite new to this field but I'm trying to learn and absorb as much knowledge as I can while I study. I was casually looking on a few job sites the other day and a lot the vacancies require an engineer with at least basic programming skills. The languages listed were; VHDL, Embedded C...
  48. N

    Need help in understand the Markers on electronic chips

    Need help in understand the "Markers" on electronic chips I am just wondering what is the markers telling us, like what has shown in the diagram, the CLR is telling us if we apply active-high state input to that port, the flip flop will be reset right? But there is some case where the...
  49. K

    Electronic book for complete beginner?

    Hey guys, I'm a complete beginner in electronics, and am looking for a beginner book to learn all about electronics. Can anyone give me some good reads?
  50. J

    Electrical A DIY Electronic Speed Control ? is that viable?

    A "DIY" Electronic Speed Control ? is that viable? The concept of 3-stage brushless motors does seem very simple to me. Simply power the 3 different stages at different times, use 2 at the same time and the 3rd as a magnetic sensor. When the sensor goes on you flip the stages, one goes off and...
Back
Top