Electrical Engineering

- Uses of electricity and the equipment for power generation. Circuits, Fiber, Signals & Systems, Semiconductor Devices...
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 Meta Thread / Thread Starter Last Post Replies Views Views: 80,141 Announcement: Follow us on social media and spread the word about PF! Jan16-12 Even as a kid, I saw beauty in old devices. That made me want to understand how they worked. I had lots of old... Jul21-14 12:14 AM dlgoff 21 4,263 Hello, I haven't learned anything about micro controllers yet but I wanted to get a head start since I hear that... Jul21-14 08:30 AM Windadct 21 5,489 Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a... Mar26-08 12:32 PM berkeman 0 29,382 Pinned: Maxwell 3D (ANSOFT) ( 1 2 3 ... Last) Dear all, I'm a new user and I like to exchange information about the use of this tool. From my point of view tool... Jul5-14 05:32 AM hussain_aamir 193 83,049 Pinned: Useful EE Links and Search Engines ( 1 2) I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for... Dec3-13 12:53 AM doubtbook 27 54,515 Pinned: What's in an electronics hobbyist's toolbox? ( 1 2 3 ... Last) I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ... Jul13-14 10:34 PM NATURE.M 63 74,890 Hi all, For an applied electronics class I'm currently taking, we have to come up with and build an electronics... Jan26-14 11:39 AM sophiecentaur 17 696 I've found some resources online about building your own solar panels. The basic premise I've found is this: solar... Mar7-09 09:43 AM mgb_phys 8 3,133 Hi, I recently got it into my head that I would like to make an analog-digital interface card for my laptop such... Mar20-11 08:47 PM jsgruszynski 1 2,327 I built a welder using Microwave oven transformers, but I keep melting the secondary coil, and they are a pain to... Jan12-11 08:40 AM sophiecentaur 17 10,857 Good Afternoon, I'd like to build a wireless charging circuit from scratch, but I am unsure of where to start.... Oct20-12 04:33 AM Enthalpy 6 3,619 What goes through an Engineer's mind upon designing a loudspeaker? Surely there must be some general guidelines, no?... Oct28-13 02:09 AM StarsFly 0 384 Good Morning, I was using the Digital Multimemter (DMM) a couple days ago and was wondering what inside the DMM... Feb10-13 03:05 PM milesyoung 5 642 Hello everyone I am new on these forums and wanted to ask if anyone knew anything about 3023 batteries. I have a... Mar2-07 02:26 AM light_bulb 1 2,831 I have two laptop computers but a car charger for only one of them. The charger says it produces 18.5V 4.9amps. Will... Mar8-05 01:04 AM iancoric 2 1,708 Hi, :wink: In the link given below circuit #1 and #2 are same except that they have opposite polarities for the... Apr11-11 09:41 PM skeptic2 4 1,368 I want to build a EEG and the site tells me to buy a PCB from some manufacturer. Will my product have competent... Aug2-12 02:02 PM Averagesupernova 33 3,243 In the field of computer science, algorithms are often assigned a "complexity" class that is a measure of the time... Nov30-12 05:26 PM yungman 1 471 Do circuits need to be used in Radar related hardware? Jul14-05 04:03 PM Matthias765 3 1,277 Consider the following circuit: http://storage6.static.itmages.com/i/14/0122/h_1390408792_3749447_6c069ce658.png ... Jan22-14 05:56 PM Averagesupernova 5 347 I was given a christmas present and i have now begun making it and ive run into a problem,:confused: does the colour... Aug11-07 09:24 AM premagg 11 12,267 I am not asking if they are considered as input into the armature's magnetic field. I strongly believe they are NOT... May17-08 08:21 PM Phrak 1 1,301 I'm in my 1st year of my EE program and I have found out that I'm not that good of a programmer. I'm learning assembly... Mar1-11 02:49 AM es1 4 6,995 I'm reading about properties of electrons in atoms, and it says an electron's position in an atom can be described by... Apr12-12 05:55 PM sophiecentaur 2 1,500 Hi, I was talking about this on another forum's general chat section and think you may be interested in answering this... Aug1-06 06:14 PM Cane_Toad 28 3,251 So I've been reading up on optical rectennas, and the sources I read say that the reason such devices are not yet... May22-10 02:58 AM sophiecentaur 4 1,039 Hi guys, As I've tried to convey using the topic title, I would like to know if (and how large the effect would be)... Apr20-10 02:46 AM Evertje 0 1,378 i have just purchased a digital lock that works on 12v dc... the lock has a transformer and a rectifier , hence i... Jan8-10 11:32 AM manshuk89 3 2,982 I have a 12vdc, 5Amp power supply and need to connect to a 12vdc, 40 watt electromagnet. I put a SPDT relay switch... Mar4-11 08:21 PM vk6kro 7 2,038 Hi, I am new to consulting business in India and wanted to know that if i use armored cable do i need to run it in... Oct7-11 03:18 PM dlgoff 5 1,197 $$Let\quad \vec { Z } =R+Xj$$ If X>0,then the impedance is lagging (current lags behind voltage).If X<0,then the... Apr24-14 07:35 PM jim hardy 5 307 I'm working on a robotics project that I believe could greatly benefit from the use of differential GPS. The robot... May7-12 11:44 AM murrdpirate0 2 1,513 I frequently teach my students about how basic generators work (motional EMFs, Faraday's Law, magnetic flux, etc.). ... Aug8-11 08:07 PM MisterX 3 2,007 I am currently planning a two-switch forward transformer driver, so as to avoid flux walking (which has been a... Nov7-11 06:42 AM cmb 0 743 I know that magnetic fields can effect electrons in certain ways, but I specifically want to know if a bar magnet just... Feb5-12 05:00 PM cjameshuff 6 5,789 Do microcontrollers have cache? Apr28-06 10:08 AM berkeman 4 1,507 When we do labs in classes we never connect anything to physical ground (always just "common" node), but in an actual... Apr10-09 12:35 PM EEJaime 8 2,281 The way I see it, the more the plates charge, the harder it is to charge them. Therefor capacitors always charge... Jul17-12 05:12 PM sophiecentaur 36 5,471 More specifically, do the leads on a TO-220 package MOSFET (like this) fit in the holes on a breadboard? Feb5-09 10:29 PM MATLABdude 1 3,391 Hi there , Can it be concluded that more the number of TR modules in an AESA radar more will be the emission ? ... Nov5-12 03:36 AM Debo Industry 0 727 Hello everyone I have a 110V hardware plugged in at home (we use 220V) by way of a step down transformer and I was... Dec15-06 11:50 AM russ_watters 2 5,711 Due to the fact that I don't have any plans on damaging my chargers (something I am not planning to risk at the... May19-14 11:35 PM meBigGuy 9 358 I'm just looking over some introductory notes to transistors and it says that BJT transistors are useful for... Aug29-11 05:13 AM Studiot 1 1,303 Question at topic title. Sep20-11 04:06 AM Femme_physics 2 1,300 I've set up RAM on a bus such that one chip takes the lower nibble and another chip takes the upper nibble of a... Jan22-08 03:50 PM berkeman 1 1,144 Hi, I think that anyone with some programming skills can create apps/games and sell it but what about... Nov18-11 03:31 PM yungman 9 1,385

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