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Jan16-12 Greg Bernhardt
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 7,324
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 6,214
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 79,926
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...
Jul5-14 05:32 AM
hussain_aamir
193 90,703
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 56,837
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 30,438
we were learning about electrical motors in class the other day and my teacher mentioned linear electric motors, which...
May12-09 05:51 PM
dlgoff
11 1,239
I'd like to breadboard a surface mount IC for testing. Is there some type of connector that can be purchased to plug...
May12-09 01:40 PM
berkeman
2 3,737
I have been searching for a generic model of MOSFET/BJT transistors for Capture CIS. I would like something where I...
May12-09 12:50 PM
Luke1294
3 2,248
I'm looking for some number to use for a heat transfer coefficient of bare wire in still air. but not having much...
May12-09 12:56 AM
ap_phys_1
9 16,616
I'm interested in doing a project that involves submerging a very strong if not supercooled electromagnet in water;...
May11-09 11:09 PM
Phrak
6 23,491
I have a question related to that is explained on the textbook Sedra & Smith. for a pole at s=a+bj,say,...
May11-09 10:18 PM
ee_mike
15 2,029
Hi guys, im currently undergoing some measurement with TCS230 light to frequency converter, its actually a cmos color...
May11-09 05:56 PM
dlgoff
1 925
Hey, i want to know the name and function of this component (in attachments)? thanks in advance...
May11-09 11:45 AM
Defennder
1 925
I am making a circuit of a car toy. Actually, i have already done its first step. The next step i want to make a one...
May11-09 09:57 AM
vk6kro
1 749
Hi, I started to design a simple circuit and want to ask you what you think about it. ...
May11-09 02:12 AM
vk6kro
4 1,132
I'm confused about a point concerning complex power calculations. The formula my text gives is S=V(eff)I(eff)*. I'm...
May10-09 01:56 PM
tiny-tim
4 14,503
Hi there I'm looking for anyone who has the knowledge or experience that can help me develop a pulse induction gold...
May10-09 08:59 AM
vrbovski
2 3,964
I try to understand why, really, there is no current (except for leakage) when a diode is reverse-biased. I studied...
May9-09 10:15 PM
Defennder
19 14,649
We simulated a 200MVA synchronous -salient pole- generator, using the 2D finite-element simulation program OPERA (by...
May9-09 09:51 PM
Dr.kW
1 1,313
I have an electromagnet that I want to be activated for two seconds as soon as I turn the power on. I think that this...
May9-09 01:52 PM
TurtleMeister
1 812
I am making a power supply and am using a lm338k to regulate a variable voltage from 2 to 30 volts. I also want to...
May9-09 05:28 AM
vk6kro
2 6,755
Hi, I want to create a electromagentic brake for AC motor. could you let me know how can I calculate wire lengh...
May9-09 12:59 AM
AdamK9
1 882
Thanks for reading my post. I would like to produce 23KHz ultrasound at a presure of 70 to 100 dB. I am thinking...
May8-09 07:45 PM
berkeman
4 1,778
Hi there. I am working on a study-oriented university project on digital modulation techniques. I am trying to...
May8-09 04:24 PM
berkeman
4 2,272
Hey guys, I recently conducted an experiment which involved charging a battery via a PV module and also logging the I...
May8-09 02:32 PM
Bob S
4 1,478
Ok, first post so be nice guys! I've designed and simulated a design for controlling a brushed DC series motor in...
May8-09 10:40 AM
emaN resU
10 9,998
Hello, I'm doing an experiment and need a small and cheap galvanometer. Does anyone know where can I find it? ...
May8-09 12:56 AM
The Electrician
7 1,867
hi, i have connected a RS-232 to RS-485 converter to the RS232 port, and i would like to know if any1 could tell me...
May7-09 09:55 PM
strandedboy
6 887
In this project, by means of two mirrors (which can be tilted about two perpendicular axis) we deflect the laser beam...
May7-09 05:24 PM
armlaser
8 7,276
I have a standard 8P8C modular jack (RJ45) and the small clip has broken off. Instead of cutting it off and re-wiring...
May7-09 12:06 PM
resjsu
2 2,672
Hi i'm new here but i've a really urgent question: What factors determine the turn on voltage of a pn junction? ...
May7-09 09:55 AM
waterzz
0 1,515
Hi guys, A friend of mine working as an EE asked me this question for which she had no answer to. She asked if...
May7-09 07:43 AM
Defennder
3 1,969
Can any one please tell me what is time phasor and space phasor? and what is the difference bwt them ?
May6-09 11:10 PM
arup672
2 1,626
I am concerned about getting the same length to all RAM chips (the output is equidistant to all inputs of the...
May6-09 09:55 PM
ephrem79
13 29,798
Hi, I am trying to design a simple water valve that opens a plug in a small water reservoir until its empty. So...
May6-09 06:21 PM
vk6kro
1 3,003
This isnt really an electrical engineering question, bit I have other EE-related questions about it. First off, If...
May6-09 11:44 AM
MATLABdude
5 6,596
beamwidth = 60(lamda) / area i knw lamda = c x f how do i find the area ? and also what is c and f in relation...
May6-09 05:30 AM
orla22
1 3,045
Im aware that for the normal distribution, the pdf is f_{X}(x) = (1/\sqrt{2\pi}\sigma)exp( (x-\mu)^{2} /2\sigma^{2}...
May5-09 10:50 PM
JamesGoh
0 3,872
i am intersted in the end of charge detection(-deltaV) on some NIMH chargers, i would like to test that effect on...
May5-09 08:09 PM
vk6kro
1 956
I'm thinking of making an electric generator. I want to use a 100kg U shaped magnet. Inside of this U magnet is...
May5-09 06:49 PM
russ_watters
7 23,336
I'm trying to design a system that will source DC power while transmitting a high impedance sourced AC signal...
May5-09 11:03 AM
TheAnalogKid83
25 7,176
Hi all, One of my guys was working on a control ciruit for a fan bank. The control circuit in powered by a 480-120...
May5-09 10:57 AM
knights of 3
9 2,029
I'm working on phase locked loop. There are two lasers where I'm working at where the slave laser is supposed to...
May5-09 05:29 AM
vk6kro
1 1,998
So if my input is an alternating voltage source, some sort of function generator plugged into the wall... will it...
May5-09 04:29 AM
vk6kro
3 831
My understanding is that the capacitance of a typical transmission line will increase proportionally to it's length....
May4-09 11:45 AM
TheAnalogKid83
7 2,961

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