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Jan16-12 Greg Bernhardt
I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for...
Y 02:05 PM
Jamesangelo
28 58,253
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...
Aug13-14 03:22 PM
Fuxue Jin
194 94,380
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 82,526
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 31,090
Hi, have you seen this?? I absolutely love this video. Plus yeah i learned something!! It's a great opportunity...
Sep18-09 12:34 PM
berkeman
1 1,056
A bit awkward question but still it confuses me...... A BJT is a current controlled device because its output...
Sep18-09 12:50 AM
sokrates
24 66,096
Almost 20 years since I took Electronics in night school. I have a 12V circuit with two lights and two switches. ...
Sep17-09 09:12 PM
DaveC426913
23 4,022
Hi all, :smile: Can someone please tell me the basic difference between a Variable Voltage Drive (VVD) and a...
Sep17-09 08:42 PM
vk6kro
9 1,875
I want to learn how a cascaded common emitter transistor amplifier is modelled. I also want to know how all the...
Sep17-09 03:51 PM
Bob S
4 5,131
Just to clarify - non equilibrium states in semiconductor means that the semiconductor is affected by external factors...
Sep17-09 03:10 PM
Mr.Green
1 1,628
Just a quick concept check. It seems to me that all instantaneous (memoryless) systems are causal because the output...
Sep17-09 02:31 PM
Mr.Green
2 2,331
can any one tell me the relation between phase spectrum and frequency spectrum in signal processing. thanks a lot...
Sep17-09 01:55 PM
berkeman
4 8,587
can any one help me to understand the following variance derivation thanks in advance
Sep17-09 06:34 AM
sohagiut
0 733
Why is the frequency spectrum of a sampled signal replicated? We have a Low pass filtered signal sampled well above...
Sep16-09 09:49 PM
likephysics
3 1,442
Hi Just have a quick question, for audio input (AUX) into speakers would it be possible to make a powerless radio...
Sep16-09 07:36 PM
vk6kro
3 2,762
Okay, basically what I'd like to be able to do is have some sort of "universal" RF (FM) audio circuit. Actually, two:...
Sep16-09 05:48 PM
cf8
8 8,515
Hello everybody, I am planning to do this project I already collected all information and all specifications of...
Sep16-09 05:14 PM
omannct
0 677
Whats the easiest way to test the max output of electricity induced in an air coil. I will wire it 3 phase delta. (or...
Sep16-09 12:03 PM
Simple10
5 6,886
Hi Guys, I posted earlier two threads, one asking about how to design a 2.45 GHz oscillator, and the other asked...
Sep16-09 09:57 AM
Mike_In_Plano
7 1,439
Hi, I have Ids vs Vds characteristic curves for a MOSFET at Vgs = 2V and Vgs = 2.5V in both the linear (ohmic) and...
Sep16-09 07:26 AM
vk6kro
6 8,494
Hihi everybody... have any new suggestion for doing final year project??
Sep16-09 01:42 AM
berkeman
2 1,111
I've been reading articles on logic gates and What I want to do before I get to school is familiarize myself with what...
Sep15-09 01:27 PM
berkeman
6 1,659
Hey I am interested in building a device that can give the local magnetic field in 3D. I'd like for the display to...
Sep15-09 12:24 PM
Bob S
8 5,382
Iam sorry if it is a very basic question but iam unable to understand this if u take a common emitter...
Sep15-09 04:25 AM
learner_89
2 7,010
I am trying to build an electric password box that will trigger a relay when correct order of password is pressed (via...
Sep15-09 12:38 AM
vk6kro
1 654
When the primary of a transformer is connected to A.C. mains, the current in it... a) is very small if the secondary...
Sep14-09 10:46 PM
Mr.Green
11 1,834
Hi, I have a question about something I encountered while working a problem. ...
Sep14-09 09:19 PM
vk6kro
1 598
Can you explain the yellow highlighted portions (the derivation part)? How do we get to know which voltages to...
Sep14-09 08:30 PM
Mr.Green
10 3,771
I know this is a school type question, but it's an example problem whose solution is already given and it's the...
Sep14-09 06:28 PM
uzair_ha91
9 7,556
I recently purchased a conductive trace pen to make guard rings on a circuit board. The problem is that the conductive...
Sep14-09 01:19 AM
Granta1969
8 7,245
The attached picture shows four diagrams that I do not understand. To me electrical diagrams have to be circular and...
Sep13-09 08:56 PM
gothed
4 4,791
Hey guys I'm just started my freshman year in college and I chose EE as my major because its cool. But I realized...
Sep13-09 07:50 PM
berkeman
6 1,225
How does this annihilation process play in semiconductors? Initially i thought that as long as the an electron gets...
Sep13-09 05:46 PM
sokrates
1 680
Ive made an experimental generator built loosely of the Faraday flashlight technology. Rather than a linear air coil...
Sep13-09 03:00 PM
JohnCBriggs
5 2,602
Hi Does anyone have any experience with ambient power modules? I have a few questions, if anyone could answer any...
Sep13-09 02:40 PM
dlgoff
3 2,931
Helo, I am currebtly working on a dsp, in a goal to implement a feedback system in the form of an LTI tranfer...
Sep13-09 11:55 AM
dot27
0 522
I have a minor bit of circuit experience. As a fun project id like to build a shortwave radio. Does anybody have any...
Sep12-09 10:14 PM
vk6kro
2 11,206
In most of the EE textbooks I have, the topic of filter design seems to essentially be treated like "Here are some...
Sep12-09 08:31 PM
dlgoff
1 730
To my knowledge (which is often poor), silicon chips will hit their limit by 2020. What technology will replace...
Sep12-09 05:23 PM
GluonZ
6 872
So I have access to a signal generator and a spectrum analyzer and one of the SG functions is to generate a sweep....
Sep12-09 04:55 PM
kiza
12 1,358
What's inside an op amp? Is it just an npn transistor used for amplification? So can we explain it in the terms of...
Sep11-09 10:04 PM
uzair_ha91
8 1,316
I currently attend a community college and am enrolled in the electrical engineering program, which has been great so...
Sep11-09 09:26 PM
waht
4 1,488
Hello, I have created a theoretical coil of 170 turns*.4871 Tesla's*.0045m^2/.06 seconds=6.21V (Faraday of...
Sep11-09 05:31 PM
Simple10
1 1,977
Hi Sorry i was just wondering how if any how much power is provider by aux in and out audio ports? Thanks
Sep11-09 04:38 PM
chroot
3 669

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