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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 6,165
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 4,984
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 76,807
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 85,820
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 55,353
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 29,787
i cant find PSK chip for my project. Actually i am student of Electronic Engg. and doing a project on serial...
Feb21-09 06:56 AM
abs_heroever
7 2,894
I'm studying a portion of a schematic from an evaluation board. What's the purpose of R20 in the attached schematic?
Feb21-09 05:34 AM
Phrak
6 1,488
Hello everyone and thank you for having me on the forum. I have a bit of a unique situation in which our very small...
Feb21-09 05:06 AM
m.s.j
2 1,583
Can someone explain to me what a 3 phase IEC Contactor/starter is, how it works, and what its used for? Thanks
Feb21-09 04:54 AM
MATLABdude
4 1,989
Hi everyone. I am trying to design a timed vibration device that I can use for my son. He has a mild form of autism...
Feb20-09 08:43 PM
dlgoff
6 1,280
Quick question, I am taking this analog design class and the class includes a project which requires design...
Feb20-09 05:06 PM
Proton Soup
8 2,433
Are there any programs around which will do this? I initially thought of Sonnet, but after some thought, I began to...
Feb20-09 02:20 PM
SquibblyWibbl
10 3,709
So I'm fairly certain breadboards cant handle 4 amps, and pcb is a bit too expensive for our budget (and not really...
Feb19-09 07:18 PM
berkeman
1 1,103
I posted a thread thats still visible concerning homopolar designs. This thread is spin off from it and I hope I get...
Feb19-09 06:52 PM
berkeman
25 1,668
I have a mobile that i only keep for emergencies, the strange thing is, it will not turn on after a recharge, i have...
Feb19-09 04:24 PM
pallidin
2 1,681
I Don't know if this is the correct place for this post but here goes. I am looking for a supply house or distributor...
Feb19-09 06:44 AM
I forgot ohms
4 975
I was reading Nikola Tesla’s Inventions recently. I was really stunned to know that he transmitted electricity without...
Feb19-09 06:40 AM
Pumblechook
21 40,204
Hi, i want to know if there is a possibility to add a remote volume control to this amplifier above. I just have to...
Feb18-09 10:41 PM
rob123kv
3 16,599
Hey guys! I'm working on a little side-project and basically i need a compact source of a burst of electricity, so...
Feb18-09 07:32 PM
triden
8 1,126
Hello, If vias are covered with soldermask is it OK to mount an SD card connector with a metal frame over the top...
Feb18-09 04:19 PM
j777
5 1,392
I understand how a baud rate can be set by a clock and the data can be shifted through a line. Both sides need a...
Feb18-09 11:15 AM
mgb_phys
3 2,102
hi guys! i've been having some trouble thinking about power in DC circuits. i've been guessing my way through my...
Feb18-09 03:55 AM
MATLABdude
1 1,862
Hello, I have a problem. I have a PT100-element that measures the heat from a lightbulb and sends the value to a...
Feb18-09 03:01 AM
Even90
0 1,340
I have recently in work been given a sort of mini project I have been handed what must be about 60 years old or so...
Feb17-09 07:27 PM
samski
11 1,915
I have some questions about the open circuit voltage of the photodiodes. Physically, what is the origin of the open...
Feb17-09 06:55 PM
Redbelly98
11 2,443
Typical fuel tank sending units have a resistance of 0 to 10 ohms in the full position and 90 to 240 ohms in the empty...
Feb17-09 06:45 PM
Proton Soup
12 3,160
Hi My project involves rectification of a voltage produced by a piezoelectric stack subjected to an impact. The...
Feb17-09 05:50 PM
Proton Soup
6 2,285
How do I do basic circuit analysis of circuits that have diodes in them? For example, if I have a basic circuit...
Feb17-09 01:07 PM
berkeman
7 15,921
I want to measure level of water at two positions in tank. How to measure it? |-----|_> here & | ----|_ >here...
Feb17-09 01:03 PM
samski
7 1,907
i have 20 ultrabright white LED's and i want to get a good brightness out of them. they will be in 2 circuits of 10...
Feb17-09 11:38 AM
lukeledinstal
15 23,136
in transmission lines i came across words such as mormalized current and normalized voltage...what do they mean..does...
Feb17-09 10:58 AM
tiny-tim
1 2,580
I have been experimenting with Homopolar generation for some time now and have some experimental observations I would...
Feb17-09 08:04 AM
confusedone
0 1,256
Hey, i am using one of these ICs to provide a 3.3V power supply from a li-ion battery. it works well but has an...
Feb17-09 05:16 AM
samski
2 1,121
what do boundary conditions mean wid respect to transmission lines??
Feb17-09 04:14 AM
uart
1 919
Hello everyone Does anyone know of an IC that can generate Sine wave of different amplitudes? I'm talking about the...
Feb16-09 11:53 PM
kiamzattu
0 3,040
Hi, can anyone help with advice on what basic device can i use to calulate power usage? the implementation im...
Feb16-09 10:14 PM
jpgnfx
0 1,097
I was trying to work out a way to calculate the combined resistance of more than 2 resistors in parallel. We all know...
Feb16-09 09:57 PM
hl_world
7 3,870
How do I figure out how many watts per hour or horse power it takes to lift a 200 pound mass using electro magnet? Is...
Feb16-09 04:39 PM
berkeman
1 3,139
I am curios about the production process of LEDs, particularly using the method of growing the crystal using CVD. ...
Feb16-09 03:38 PM
berkeman
1 1,106
Hey there fellow engineers, I have a question to pose for a project I am carrying out. I currently have a GPS...
Feb16-09 01:27 PM
fizz_it
3 2,029
Hey everybody! I am an undergrad student ,in an ee department.Ive taken "signals and systems" and two ago we got into...
Feb16-09 11:14 AM
fizz_it
7 2,207
If I set up 2 AA batteries to power 3 LEDs (each of which had an on/off switch), how would I set up a circuit which...
Feb15-09 11:47 PM
hl_world
5 851
I'm having a really hard time wrapping my head around this. A capacitor in an AC circuit will charge and discharge...
Feb15-09 11:29 PM
MATLABdude
1 7,111
I was wondering if anyone knows if there is a theoretical relationship between power grids generating capacity to its...
Feb15-09 11:17 PM
leoen
0 2,745
Hello, I'm a mechanical engineering student currently working on a project which involves a compressed air motor and a...
Feb15-09 04:28 PM
Zeph
0 3,169

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