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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 31,167
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 82,769
I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for...
Aug22-14 02:05 PM
Jamesangelo
28 58,421
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...
Aug25-14 03:20 PM
Fuxue Jin
196 94,773
Hello, I'm building a DC generator for fun (of the cardboard and lego variety). It is based on this model: ...
Apr15-12 07:33 PM
Joe111
9 16,685
Hi, here are a few newb questions about error sensing - I have a Kepco BOP 20-10M that I have connected to a solar...
Apr15-12 11:56 PM
Aaron William
0 707
Hello, this is my first post. I googled it, and searched the forums, but no luck. I want to know what I need to...
Apr15-12 11:59 PM
mdjensen22
5 1,089
Hello, I am an Electrical Engineering Technologist student and we have a design project that i am trying to...
Apr16-12 01:49 AM
jim hardy
1 938
Hi I have taken a very rudimentary course on antenna theory, now i am interested in further deepening my knowledge....
Apr16-12 01:53 AM
najeeb
3 1,050
Please explain me the working of TRAPATT diodes . I am not getting it from the textbook especially the transit time...
Apr16-12 02:49 AM
erece
0 1,582
iam going to work on real time image detection and recognition can anyone recommend me a good book iam totally new to...
Apr16-12 04:25 AM
asad1111
0 679
If I was to make a modification to an 8 bit full adder to make it a an eight bit full subtractor would I put an...
Apr16-12 09:45 AM
rbj
2 11,910
I know that an AM Amplitude vs. Frequency Spectrum has a central frequency = carrier frequency and two side bands of...
Apr16-12 01:48 PM
sophiecentaur
4 1,477
Hi, Something is puzzling me with the HVDC work I'm currently working with. I'm working for contracting company...
Apr16-12 02:54 PM
AElcEng
3 1,232
Hi, I see that Boltzmann constant comes in different forms like: k=8.62*10-5 eV/K and also k=1.38*10-23J/K. Which...
Apr16-12 04:16 PM
rbj
7 2,813
I am looking at a building with a car park in Sydney. Electrical circuits are run on perforated cable trays at high...
Apr16-12 04:47 PM
Futsal1st
0 427
two very large solenoids (tons maybe ) Stacked vertically, very large capacity wire coil w/ iron core. upper solenoid...
Apr17-12 01:40 AM
Eschersand
55 26,550
hi all, i wanna know that how can i determine the size generator fuel storage tank. let suppose i have 3 generator...
Apr17-12 06:14 AM
Mateen-ud-din
6 1,927
Ok; so basically, I am creating the game of Nim through gate chips (AND/OR/NOT), switches, and yea all the basics. ...
Apr17-12 10:14 AM
EEmajor
5 1,151
I am trying to build a function generator and I am unsure of how to build a circuit to vary frequency. Would I use a...
Apr17-12 02:01 PM
Windadct
4 2,251
Let's say we have 2 different conductors - one a round wire, another a round wire but with hollow core. The wire...
Apr17-12 02:56 PM
yungman
23 3,741
I have some recessed can lighting fixtures in a commercial application that was using compact 277v fluorescent bulbs...
Apr17-12 05:43 PM
wirenut
9 1,929
"an electric field is the region of space surrounding electrically charged particles and time-varying magnetic fields"...
Apr17-12 05:44 PM
earlofwessex
1 1,066
What would happen if an uplink and downlink had equal frequency. I know 'swamping' would occur, but what IS swamping ?...
Apr17-12 08:14 PM
vk6kro
8 1,878
i have a wien bridge oscillator by using 15V power supply. its output is sine wave. but i have a question. is the...
Apr17-12 08:20 PM
vk6kro
2 812
Can you explain to me how I find the initial magnitude in dB in example 5? I'm used to using the equation 20log(break...
Apr18-12 06:54 AM
CognitiveNet
0 686
I am having trouble coming up with the equation given to me from ...
Apr18-12 09:41 AM
JohnHavranek
0 1,673
I'm just curious.. the widely used DCF.. what are they made of? Are they just normal fiber with some physics trickor...
Apr18-12 10:25 AM
sixers0130
0 536
Hello. Here joined is the schematic of a small deflection amplifier. Outputs H0 & H1 are connected to electrodes...
Apr18-12 11:24 AM
yungman
6 1,395
I'm studying for an exam and i'm struggling to understand op amps, here's my problem: I understand that for an op amp...
Apr18-12 11:47 AM
psparky
6 3,472
Hi, y'all; This will likely be a simply question for most of you, but I am still something of a neophyte (yes, yes,...
Apr18-12 04:54 PM
DragonPetter
1 671
Hi im making a project in my spare time and i am getting quite confused with the whole situation. I have 100 LED's...
Apr18-12 07:09 PM
vk6kro
19 2,080
Dear All, When I have a equation 1/sT its an integrator with time constant i.e Assuming a T of 5s, if I input a...
Apr19-12 12:04 AM
rbj
1 913
I am working with a kit circuit that I ordered online. The circuit triggers a relay when it "hears" a loud noise. I...
Apr19-12 01:33 AM
hisham.i
1 1,150
We know charge is accumulated on the conductor plates of capacitor. Here is a circuit (image) with voltage source,...
Apr19-12 05:33 AM
sheshank
48 10,180
I found this problem during simulating my SIMULINK block diagram. how can i solve this? thanks. it is emergency. this...
Apr19-12 10:45 AM
tonylim456
0 1,976
hello, pozdrav my question is about Valve Regulated Lead Acid battery. may i charge it only with "float" voltage...
Apr19-12 11:32 AM
pocho
2 1,201
Is the output from a transistor sensor circuit analogue or digital? I know that you sometimes need a pull up or down...
Apr19-12 04:28 PM
yungman
9 1,817
if electricity is flow of electrons and also positive and negative charges attract then why electricity needs a...
Apr19-12 06:41 PM
jim hardy
3 920
Isn't the case that when the lamp filament melts the resistance of that part of the circuit goes to infinite? So why...
Apr19-12 07:02 PM
jim hardy
4 1,462
I would like to make an electromagnetic simulator, but I have no experience in this. I have written 3-dimensional ray...
Apr20-12 02:39 AM
yungman
5 1,515
In the ni=\sqrt{Nc*Nv}*e^{\frac{-Eg}{2kT}} formula for intrinsic carrier concentration, what values Nc,Nv and Eg take...
Apr20-12 08:25 AM
reddvoid
1 7,031
Hello everyone, I'm Jamie and at the moment I'm at the final stages of my final year design project. I'm designing...
Apr20-12 08:41 AM
asgerbj
2 512
I was trying to solve out this problem for homework and I came to the answer of all of them being false because they...
Apr20-12 09:28 AM
rbj
3 1,003

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