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Electrical Engineering

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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 25,941
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 47,005
I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ...
Feb4-14 04:57 PM
davenn
62 59,333
As we know due to skin depth effect the Alternating Current flows at a depth from the conductor surface (which means...
Apr6-14 07:00 PM
meBigGuy
48 1,140
ansoft, maxwell Sticky Thread 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...
Apr10-14 04:04 AM
mwvivi
189 60,621
is there any website that provides online exercises for electrical engineering??
Jul5-04 04:31 AM
m_safibaig
2 1,443
Anybody know anything about SCR...can an electric motor power a towboat with batteries and back up generator power say...
Jul5-04 07:39 PM
chroot
2 2,010
I don't understand how these tasers that have 50,000V only produce a very low amperage. According to Ohm's law that...
Jul9-04 09:28 PM
RFbeginner
2 1,673
Can anyone tell me anything about leak test/cold test/hot test in the world of automation ? Thanks a lot,
Jul9-04 10:22 PM
Stanley_Smith
2 2,428
engineering science,basic of electronic,principle of electronic and electrical lecture notes and exercises?
Jul10-04 05:53 AM
alanveron
0 978
I often use Spectrum Analyzers to probe RF signal powers at different points on multilayered PCBs. These probes have...
Jul13-04 06:18 PM
chroot
3 2,371
Hi all, I'm currently doing some work trying to optimize coils (basically a large center hole solenoid) for a...
Jul14-04 03:38 PM
enigma
6 5,725
how does potential decreases when there there is force of attraction between a positive charge and a negative charge
Jul15-04 09:50 AM
rayjohn01
1 913
Howdy- Consider a low pass filter subjected to an AC source (i.e the "output" is the capacitor voltage). I...
Jul15-04 12:52 PM
rayjohn01
7 6,840
Hi all, I cann't figure out the relationship between a current and the charge density. I have a current Io which...
Jul15-04 02:07 PM
Mica
11 2,343
According to this government page 50 volts can be considered "Life threatening." However, I read this article which...
Jul15-04 05:39 PM
chroot
11 13,894
I've been reading, trying to learn electronics. Everything I've read so far seems to be either components or finished...
Jul16-04 08:58 AM
rayjohn01
12 1,764
Ok, I saw this guy trying to unlock his car with his radio controlled keyring with no luck, he put the device next to...
Jul16-04 11:06 AM
Cliff_J
3 1,199
can anybody explain to me how relay and solanoid work in a simplest way ? I got a few sources that explain about...
Jul16-04 11:36 AM
Dual Op Amp
3 3,424
I have been studying Linear Synchronous Motor (LSM) technology recently and there is one thing that has me boggled. ...
Jul16-04 01:35 PM
MeMark
0 3,094
Did you notice how modern sources (textbooks, tutorials, industry experts) treat Electrical Force and Magnetic Force...
Jul19-04 07:22 PM
turin
4 1,986
Hey all, I was in class today, and in order to grasp concepts better, i try to relate them to things i can use them...
Jul19-04 10:07 PM
Inspar8r
4 6,167
Hey All, Can any body tell me how to select a varistor(surge protector) for particular application? Thanks...
Jul20-04 01:52 AM
Mahadev
0 2,440
New to power EE. I'm trying to charge up a cap (120 μF) to a high voltage (300 V). I have a tiny transformer that...
Jul20-04 09:15 PM
turin
2 1,354
I am trying learn (re-learn in most cases) basic electronics I have found this piece of obscure software called Edison...
Jul21-04 01:01 AM
RFbeginner
1 2,097
Hey guys, I'm an Electrical Engineering major @ McNeese State University in Lake Charles, Louisiana. I only have 60...
Jul21-04 04:48 PM
ENGRstudent
0 2,241
Well I've checked a few sites for the answer but I still don't seem to understand the grounding as well as I'd like...
Jul22-04 10:00 PM
Averagesupernova
37 13,539
http://www.hpcalc.org/hp49/science/electricity/
Jul23-04 12:24 AM
eJavier
1 2,475
http://floti.bell.ac.uk/principles/star%20delta/img008.gif sorry...i dunno how to post the pic here...juz want to...
Jul23-04 12:47 AM
eJavier
1 1,076
i have a basic question about IC we give 5 volt in general in to an IC but the size of the IC is in nano measure...
Jul25-04 09:52 AM
rayjohn01
3 1,306
Can a so called "common mode voltage" be a dc voltage?? Say there is a simple series circuit... a DC source.. a...
Jul25-04 03:58 PM
chroot
3 9,206
I'd like to construct a fast-reacting current overload protection device. And rather than use a FET as a short to blow...
Jul25-04 10:00 PM
QuantumCowboy
3 5,873
I was wondering if anybody had any information on Quantum Mechanical Transistors.
Jul27-04 08:52 AM
BLUE_CHIP
5 1,286
i need an on/off toggle switch for my bilge bump on my jet ski. But, the mounting panel is about 2 inches thick where...
Jul27-04 10:30 PM
Tyger
5 1,508
i know that output impedance of an op-amp is very small compared to its input impedance. is there any purpose of...
Jul28-04 09:41 AM
denian
4 1,149
Can anyone please explain how chip inductor is made.
Jul28-04 09:25 PM
Antonio Lao
0 1,669
Can a crystal types radio be made to work in infrared? With an antenna of lead sulfide or lead selenide perhaps?
Jul29-04 09:16 PM
neutroncount
6 2,238
I will be majoring in electrical engineering, and have a couple questions. ive heard a lot about how the classes are...
Jul30-04 07:52 PM
turin
1 1,699
i want to buy a PA system for my car. the one i'm looking at has a 15W speaker... and it's the megaphone sort of...
Jul30-04 08:18 PM
megashawn
3 2,952
i was given this circuit diagram by one of my instructors this past winter (summer for you americans) so.. i tried 2...
Aug1-04 02:21 AM
flexten
8 17,345
Is it wrong to use a thermocouple to mesure the temperature of glass that will range from 20-300oC? as the range of...
Aug3-04 05:34 AM
techvineet
8 3,670
Okay, this may sound like a dumb question, but if i were to create a wireless signal with a frequency of red light for...
Aug3-04 03:06 PM
Goalie_Ca
11 1,594
trying to figure out the meaning of lattice struction in semiconductor... :yuck: and, why a small current in the...
Aug3-04 06:49 PM
kurious
2 1,581
I have a buddy asking if I can do this for his 300 ZX. I have checked and there is a programmable module available...
Aug4-04 03:17 AM
Ivan Seeking
6 3,041
May i know how's the tuned circuit function?
Aug5-04 05:00 PM
turin
1 2,078

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