What is Electrical engineering: Definition and 626 Discussions

Electrical engineering is an engineering discipline concerned with the study, design and application of equipment, devices and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution and use.
Electrical engineering is now divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, electronics, and optics and photonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics, and electrical materials science.Electrical engineers typically hold a degree in electrical engineering or electronic engineering. Practising engineers may have professional certification and be members of a professional body or an international standards organization. These include the International Electrotechnical Commission (IEC), the Institute of Electrical and Electronics Engineers (IEEE) and the Institution of Engineering and Technology (IET) (formerly the IEE).
Electrical engineers work in a very wide range of industries and the skills required are likewise variable. These range from circuit theory to the management skills of a project manager. The tools and equipment that an individual engineer may need are similarly variable, ranging from a simple voltmeter to sophisticated design and manufacturing software.

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  1. H

    Induced EMF in Ansys Maxwell

    Hi guys, I'm new to this forum. I'd like to know how I could perform a simulation to find the induced EMF in a coil placed closer to a current-carrying conductor. I'm not sure how I should model the coil. I tried modelling it as a solenoid but the solenoid exceeds my required length when I enter...
  2. bigmike94

    Courses Help choosing modules for electrical engineer - electronics degree

    TL;DR Summary: Which path would be best. Physics or mechanical for electrical engineering. My uni doesn’t offer electrical engineering but offers electronics engineering. Looking for advice from anyone in industry or similar. I’m on an open STEM degree and I’m following the electronics...
  3. benagastov

    I Photodetector Output & Refractive Index of FO Cladding/Coating

    After I finished preparing gas chamber for testing optical fiber as gas sensor, my supervisor asked me to measure the difference of refractive index from several optical fiber with different coatings. I knew there is Evanescent Field and Skin Depth effect, but what kind of mathematical formula...
  4. The Bill

    Engineering EE resources for audio hardware design?

    My Google-fu has been failing me on this. I'm looking for a good variety of online resources and textbooks on the design of audio equipment. The level I'm looking for would be for upper-level undergraduate or intro graduate level electrical engineering. Topics must include how to best isolate...
  5. core7916

    Problem with boost converter

    Hello, I am designing a simple boost circuit, in which I have convert output of 200v. i am testing the idifferent input voltages , 12, 15 and 24v supply. But in each time there is no change in voltage in duty cycle- 20% -40%. like example. i am giving input as 12v. outputs are. duty cycle -...
  6. yucheng

    Engineering EE Design Calcs: Mastery Expected? Textbook Examples?

    Looking through the Art of Electronics, I barely see any equations, mostly description. However, checking out this video, we get a whole page of calculations. Are the authors of AoE expecting that practitioners are already fluent in these design calculations? Are there examples of such...
  7. Pipsqueakalchemist

    Engineering Separately excited DC motor problem (Electrical Engineering)

    Hello, so for this question I know how to solve it but I still have a few questions. First when the question means it's rated at 20 HP and 600 V, it's referring to the source voltage and Pin correct? Also in order to solve this question, the rotation loss Prot was neglected. This was because at...
  8. Franklie001

    Engineering RLC circuit -- Phasor Transfer Function calculation

    Good morning, I need some help solving those two question. I've attached my attempted solution below. Could i solve the transfer function any further? Thank you for your help
  9. L

    Studying Should I take up electrical engineering or computer science?

    I am currently in my final year of high school in India, and slightly confused as to which course I should take. I've always been interested in physics, and would eventually like to do research in quantum computing. I'm not sure whether to take a B.S. in Physics, or engineering (a BTech) in...
  10. wyattmarshall

    Best way to self-teach Electrical Engineering and Embedded Systems?

    Summary: Trying to self-teach Electrical Engineering, Embedded Linux and AVR/ARM to make a career change into embedded systems development and I need suggestions on the best way to do that. I have a plan but I honestly have no idea if its a good one. I have been into computers my whole life...
  11. J3J33J333

    Choosing Physics or Electrical Engineering

    Hello, I'm trying to decide between physics and electrical engineering. I like building electrical stuff, and I like solving physics problems, but my main goal is to try to build power systems that integrate things like what can be found in this paper https://arxiv.org/abs/1401.0520. I would...
  12. V

    Undergrad Research Topic Ideas Please (Electrical Engineering)

    I'm currently looking for possible innovative research topics or ideas, I'm having a hard time to think of one since everything is getting really advance. Thank you.
  13. M

    How do you use electrical components adequately?

    The image i provided is a section of microcontroller circuit that i used to interface code in C with the I/O port of the microcontroller, in Proteus. I have realized i was only ever told to learn how to measure the voltage and current across the components, Kirchhoff's rules and all, and...
  14. S

    Engineering Boundary Conditions Electrical Engineering

  15. Franklie001

    Excel Worksheet problems -- Piston and connecting rod connected to a crankshaft

  16. Franklie001

    AC circuit analysis involving resistors and inductors

    Summary:: Hi anyone can explain me how to solve this circuit, finding the current I2 and I1? Really don't know where to start Thanks
  17. M

    Engineering AC Circuit Phasors: Find I1, I2, I3

    Summary:: Hi, I tried attempting this problem in alternating current in order to find out the phasors as complex numbers, and I would be more than grateful if someone could peer review it, and confirm my calculations (Please see below both the Figure and the calculations) Please find attached...
  18. A

    Inductor Efficiency via LC Oscillator

    I want to create an LC circuit with varying inductors and compare those inductors for efficiency. Would it be accurate to suggest measuring the area under the curve of the first cycle of the resonant frequency would determine which of the inductors are most efficient? If the area is greater...
  19. F

    Programs Electrical Engineering vs. Robotics in Graduate School

    Hello everyone, I am looking at two master's degree programs (graduate school) : electrical engineering and robotics. Taking decisions is hard, and I would gladly like some advice making up my mind. I have a bachelor's degree (undergrad) in electronics and electrical engineering, which grants...
  20. S

    Engineering Complex Thevenin's Circuit

    So I've been absolutely stumped on this one. I've tried about a million different things but none of them have seemed right. A combination of the odd layout of the circuit, and a combined voltage/current source are making things really complicated for me. I'm somewhat sure the RTh is 15kΩ due to...
  21. S

    Engineering Norton's Theorem -- Help checking my work please

    So I've just learned Norton's Theorem and I have this problem on my homework assignment that is wrong. I've checked the answer with a circuit simulator(PSPICE) and the simulation said that V0 should be a drop of 2V. However, my simplified circuit shows a voltage drop of 4V. I have been staring...
  22. G

    Engineering Induction motor no load magnetisation loss

    The study material says under 'Estimation of magnetising losses' : On no-load, the rotor current is very small and the slip almost zero. Therefore, R′2s is very high and virtually no current flows through the branch of the circuit containing R′2s. Consequently, the no-load current is virtually...
  23. H

    Solving an Electrical Engineering Challenge with a Tank of Electrolyte Liquid

    So I am working on a project where I have a tank, which has a volume of electrolyte liquid inside it. This is coupled to a battery which charges it, and gives it energy. I will have a copperband arround it, so i can measure a potential voltage from the electrical field. So what I need to...
  24. E

    Engineering Electric Power Systems book recommendation

    Summary:: Electric Power Systems book recommendation Hi everyone, I finished my Electrical Engineering degree 15 years ago and wanted to refresh/review/update my knowledge on Electrical Power Systems. I'm looking for a book recommendation that has: components of a power system, control of...
  25. W

    Size of bremsstrahlung radiation fields generated by linear accelerators

    Hi everyone, sorry we are talking about pulsed power accelerators again. In this context, it is about the HERMES III again. According to https://apps.dtic.mil/dtic/tr/fulltext/u2/a351472.pdf HERMES III, a 16 terawatt pulsed power accelerator at Sandia National Labs, which fired electron beams...
  26. W

    B Isodose contours of HERMES III

    These pictures below show four isodose contours of HERMES III with different anode-cathode gaps. The radiation produced are gamma rays. More informations can be seen here in the article https://www.osti.gov/biblio/6233581-hermes-iii-gamma-ray-facility-simulation-technology-laboratory-guide-users...
  27. Elias_HH

    Engineering How to draw a block diagram of a discrete element with its impulse response

    Hello friends, I have a problem with a exercise sheet. Given is the impulse response of a discret element. The task is to draw the block diagram. But I think that the solution in the sheet is wrong. Because based on the difference equation (Exercise.pdf) there should be 3 delay elements. I have...
  28. A

    Do you have some good advice for an electrical engineering student?

    Summary:: hello there, what are some good advices you would have liked to know when you were a student of EE? Thanks in advance!
  29. K

    What Happens if 2K2 & 2K3 Close Simultaneously?

    Can someone give me some insight into what would happen at the motor terminals and on the line if 2K2 (run Contactor) and 2K3 (auto xfmr wye contactor) were to close simultaneously. There are interlocks to prevent this, but I would like to know out of curiosity. My theory is that you would have...
  30. N

    Math Switching from Electrical Engineering to Theoretical Physics

    Hi all, I'm going to graduate this May with a degree in Electrical Engineering. While I've done pretty well, my passion was never in EE and I'd like to aim for graduate school in Computational Neuroscience. When I look at the background and methodology employed by many favorite (current)...
  31. cwill53

    Programs Double Major in Electrical Engineering and Physics?

    I’m a freshman in undergrad and I currently attend the University of Illinois at Chicago. I major in electrical engineering but I have an extremely strong interest in physics, chemistry, and materials science. UIC doesn’t have a materials science program, but George Crabtree, a highly cited...
  32. K

    Voltage measurement on a Current Transformer (CT)

    I don’t know the ratio of the CT. I’m just looking for an explanation on this. I thought in order to measure output voltage you need to pass the current through a resistor and read the voltage drop. A co worker put 400a through the CT and measured 130v. Something just seems off to me. Can you...
  33. K

    Vacuum interrupter contacts and displacement current

    I’m self taught so I have a lot of holes in my understanding. I also have little to no mathematical understanding. Even though ironically, I tend to prefer to picture electricity as numbers rather than “water” in a pipe, etc. I’ve been studying displacement current recently and have a question...
  34. garthenar

    Comp Sci Boolean simplification of a larger term?

    I was asked to use De Morgans law to find the complement of a particular equation, I applied the law correctly and simplified my solution down to A'B'CD'+CA+CB'+D'A+D'B' I ran the problem through a boolean simplifier to check my work...
  35. Boltzman Oscillation

    Engineering How should an H bridge circuit be analyzed?

    If I am given an H bridge circuit such as that below: How would I go on analyzing it? I would personally replace all of the transistors by their circuit models but then what would I do with the motor? Do I replace the motor with it's load resistance or is there more to it? I guess motors are...
  36. Boltzman Oscillation

    Engineering How do I find the electric fields for this capacitor?

    the image is given here along with some numerical information: Now I know that the formula for the electric field in a capacitor is given as: $$E = \frac{V}{d}$$ which I can use to obtain the three following fomulas: $$E_1 = \frac{V_1}{d}$$ $$E_2 = \frac{V_2}{d}$$ $$E_3 =...
  37. Muskyboi

    Engineering [Electrical engineering] Second order Parallel RLC Circuits.

  38. Boltzman Oscillation

    Engineering Help finding the damping ratio formula for this circuit

    The circuit to be analyzed is shown below: Since initial conditions are zero (from the instructions) I will use laplace transforms for the cirucit and I will use the MAME method to solve this circuit. The laplace transforms that are required will give me: $$E_g(s) = \frac{10}{s}$$ $$ L_3...
  39. H

    How to get admission into Master's in Astronomy after electrical engineering

    Hello, I am Harshil from india. I have completed my Bachelor's in electrical and now i want to do Master's in Astronomy, so i have few questions please answre it... 1) Can i get the admission in MS/Msc astronomy if i have done electrical engineering? 2) If the answer of first question is...
  40. D

    Engineering How to know if I’m more inclined towards Mechanical or Electrical Engineering?

    How to know if I’m more inclined towards mechanical or electrical engineering?
  41. Emmo Amaranth

    Electrical Engineering Beginner's Resources

    As the title suggests, I'm hoping some of you have some favorite resources for a self-studying novice. I'm sure there are a LOT of places online (and in print) to learn, but if anyone can help point me in the right direction I'd be very appreciative. Cheers!
  42. V

    EE or ME -- which do you find more difficult?

    I seem to be in a minority for thinking that mechanical engineering is more difficult than electrical engineering. Difficult for me, I mean. To me, mechanical engineering is more difficult largely because in mechanics your intuition and common sense are often trying to mislead you. With...
  43. D

    How to calculate the reluctance of an electromagnet

    How do you calculate the reluctance of An electromagnet that consist of a nail with bare copper wire wrapped around it? I have tried searching on the internet. Have not found a website that answers my question. Not wikipedia or any other website.
  44. L

    MHB Electrical Engineering Problem

    An electric oven is heated using electricity from a 110 V power line. The power line is connected to a resistance heater in the oven, and the current through the heater is found to be 1.0 A. Assuming the heater is 100% efficient in converting electrical power into thermal power, what is the...
  45. D

    I have tried building a phase shift oscillator, but it won't work

    I built a phase shift oscillator, but it Won't work. I visit the website https://www.google.com/url?sa=t&source=web&rct=j&url=https://en.m.wikipedia.org/wiki/Phase-shift_oscillator&ved=2ahUKEwiV4Y-26OHiAhUClawKHQhACO8QFjANegQIChAG&usg=AOvVaw0YoHKumGz0Xl3fYKtIRdFa and copied the schematic I saw...
  46. D

    Unable to get a Wien bridge oscillator to work

    I am unable to get the wien bridge Oscillator I built to work. This same Circuit has worked several times. Sometimes the same circuit works. Sometimes the same circuit does not work. When it works I can get A led to blink and can build a frequency divider. How do I troubleshoot this circuit...
  47. D

    How to make a comparator out of an opamp

    I have an operational amplifier. I am Trying to make a comparator out of It. I built a voltage divider to provide Different voltages. But I either get The same voltage output regardless Of input or the voltage is too high I think. How do you make a comparator out of an operational amplifier?
  48. D

    Trying to get a microphone to produce a signal

    I removed a condenser microphone From a sound meter. I plug it in a breadboard. But the Condenser microphone won't produce a voltage or signal. I tried yelling into the microphone. I tried Connecting a battery to circuit. Nothing I tried worked. Anyway to get microphone to pick up signal?
  49. G

    Courses Electrical Engineering: what study path would be better?

    Hey guys! So basically I'm still finding hard to decide what my specialization field should be next year. I'm really torn between a major in Electronics with a minor in Power Systems with some programming additional courses OR major in Power Systems with minor in Electronics. My favourite...
  50. Boltzman Oscillation

    Electrical Engineering: Is this signal stable?

    Homework Statement y(t) = x(1-5t) Homework Equations none The Attempt at a Solution well I've never looked at the stability of a signal which has a time scale and shift. My guess is that it is stable as anything I can provide as input will output a bounded signal. Ex: if x(t) is u(t)...