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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
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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 6,358
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
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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 91,149
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
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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
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I'm using PV cells to energize an air core coil. Is there a method in which I can determine the maximum length of 32...
Apr10-09 11:39 AM
Robin07
6 978
Lets say you have a battery and connect wires to each of the terminals. Now you bring both of the wires together to...
Apr9-09 11:03 AM
b.shahvir
1 2,145
Hello everybody! I was studying stuff about transistor and i got stuck somewhere. In lecture they said that The...
Apr9-09 10:42 AM
cabraham
3 9,092
hi everyone, i am a 1st year btech student. iam interested in robotics and astro physics. i want to know...
Apr9-09 08:07 AM
kthouz
1 750
Hi, im new here and have a couple questions. First, If someone is standing in their house on a carpeted floor with...
Apr9-09 05:18 AM
djdoug99
2 996
What are the major device ratings for a MOSFET?
Apr9-09 04:18 AM
Phrak
1 2,664
Hey Guys, I'm having trouble designing an inverter to power an ac motor using a fuel cell with MATLAB. With the...
Apr9-09 12:06 AM
berkeman
1 4,428
I am given the autocorrelation of a wss rp which modulates a carrier cos( w0 t + \Theta ). I am to find the...
Apr9-09 12:01 AM
berkeman
1 1,367
I'm trying to clear up my picture of basic electricity and electronics. I've looked at some other posts that ask what...
Apr8-09 06:15 PM
johndb
7 1,060
When a transformer is rated 225 VA, Vprimary=120 V and Vsecondary=9KV, Isecondary=25 mA, does this mean that on the...
Apr8-09 04:23 PM
bitrex
7 15,578
I have trouble getting my head around Zener Diodes. If you reverse bias them, and apply a current, it will not conduct...
Apr8-09 04:43 AM
bitrex
1 5,307
Hi, I am trying to charge my body to voltages around 300V. I have a high voltage DC power supply; I can set the...
Apr8-09 01:10 AM
seang
9 1,171
-I know its the "distribution"! but I`m asking about, like, how would the "distribution" be continuous? -I think the...
Apr7-09 01:26 PM
Bob S
2 2,679
The other day I came into my living room, and noticed that the CFL in one of my lamps was flickering like crazy. Of...
Apr7-09 12:02 PM
Proton Soup
5 1,818
First of all, I don't come here that often so I didn't know where to post this. I'm still in High School so my...
Apr6-09 07:42 PM
pablos511
7 5,007
Hello everybody, I'm currently taking Electrical Engineering as senior physics major at Fordham University and have...
Apr6-09 06:03 PM
nomizzz
4 46,208
Hi, I'm just a humble biologist (writting up a PhD Thesis in Neuroscience) and I'm trying to get a feel for how my...
Apr6-09 05:55 PM
bill.connelly
20 1,811
hi i recently started learnning electronics from several books and tutorials online i ran into this circuit on...
Apr6-09 04:45 PM
bitrex
12 1,768
For our design, we're sending at most 7A (usually less) to a prototype board with a resistor and MOSFET on it... can...
Apr6-09 02:56 PM
mgb_phys
11 2,764
I'm building a tank circuit and I need to have an output and a ground connection. The type of circuit is a parallel LC...
Apr6-09 01:25 PM
Bob S
2 897
Hey, I'm a newbie trying to figure out a few crucial additions to my circuit I'd like some tips and suggestions.. ...
Apr6-09 08:25 AM
patsak
23 13,344
Can someone help me understand what this solenoid is doing? It's somehow integrated into a switched shutoff system. ...
Apr6-09 07:55 AM
eberg
2 1,637
hey, I'm trying to use matlab to simulate a simple RC low pass filter. I have an array of data that represents the...
Apr5-09 06:38 PM
sinusance
2 7,015
I am getting ready to make a tube preamp to drive a Leslie speaker. I want to use a 12AX7 and 12BH7. I plan on using...
Apr4-09 09:14 PM
jordankersten
11 12,500
How does the relative position(series or parallel) of a resistor affect the calculation of the RC and LC time...
Apr4-09 06:12 PM
dlgoff
1 1,486
Hi, Frankly, I'm new to this forum. So please do guide me if I posted wrongly. I need some help in sizing the...
Apr4-09 10:04 AM
m.s.j
4 10,952
Can someone please give me some general rules of thumb in dealing with VFDs and 3 phase dual wye motor winding...
Apr4-09 08:07 AM
m.s.j
1 3,670
Hello all! I am a student of electrical & electronic engineering, in my final year; for my dissertation, I am...
Apr4-09 04:48 AM
orphefs
23 5,368
This is a question about the so marketed "boutique" ATX power supply I was investigating in an earlier post - I was...
Apr4-09 01:40 AM
bitrex
0 752
I am currently designing a water distribution system to be installed in Honduras and have run into a small problem. ...
Apr3-09 02:06 PM
Dr.D
6 5,044
Hello All, I'm trying to determine if there is a way to make a voltage controlled resistor using an Op-Amp (or...
Apr3-09 11:58 AM
BogdanFloresc
11 24,141
I have been recently reading papers on Generalized Pencil of Functions and Prony Method (parameteric modeling). It...
Apr3-09 11:49 AM
OptimalDesign
2 2,384
Hi, I want to use a variac that i've got (4A rating) to power one of these: ...
Apr3-09 11:32 AM
berkeman
2 1,984
Is parameter estimation in DSP concerned with things such as bit error rates, maximum likelihood detection etc ... ? ...
Apr3-09 10:51 AM
OptimalDesign
2 1,404
Hi I'd appreciate help with the following problem: Suppose I have a Bayesian metric for navigating a trellis to...
Apr3-09 03:56 AM
maverick280857
0 987
I've modified a piece of exercise equipment so that it generates 12v dc. Max current is almost certainly less than 1...
Apr2-09 06:40 PM
Rick Martin
4 1,416
Hi All Anyone know where I might find the IV curve for a General Electric BD-5 tunnel diode? I have found a few...
Apr2-09 12:50 PM
jack b
4 3,979
What is the physical explanation for the power transfer in a circuit being maximum when the resistance of the system...
Apr2-09 12:38 PM
berkeman
9 1,754
Hey everyone, first of all id just like to clarify this isnt a homework or coursework related problem, its part of my...
Apr2-09 05:34 AM
1alph1
0 2,867
When a diode is first manufactured, the electrons in the n-doped region tend to flow to the p-doped region due to...
Apr2-09 04:30 AM
MATLABdude
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