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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 31,531
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 83,989
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 59,141
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 96,722
HI, I'm doing a project on applications of linear algebra to circuits. So far I've found how to use matrices to find...
Apr23-07 03:06 PM
SGT
3 2,038
Hello All, We are trying to make an electric vehicle and we want to use ultracapasitor. Is there anyone who has...
Apr23-07 04:34 PM
berkeman
5 2,072
I often see on electrical devices, they say how many amps the device uses. But I wonder how can that be? if you do...
Apr23-07 08:05 PM
Wishbone
7 2,591
Trying to find out information on NAND and NOR logic gates and which, if any, may be less reliable at higher speeds....
Apr23-07 09:53 PM
es1
5 7,442
hi, how can i plot the bode plot for this transfer function: 100 ---------------- s^2 + 10s + 100 i...
Apr24-07 10:06 AM
berkeman
2 2,673
Hello All, I was playing around with a small circuit that used a MOSFET to pulse power from my DC power supply into...
Apr24-07 11:22 AM
Jdo300
4 3,925
I am using a Triad Magnetics CST206-3T Current Sensing Tranformer. How does it work? I need to find a resistor to...
Apr24-07 01:17 PM
The Hath
2 5,046
Hi, it would be great if someone could give me a conceptual explanation of how a simple circuit of fiber optics...
Apr24-07 02:09 PM
teleport
3 2,036
Why does Hartley Oscillator produce a sine wave?Is it just because Barkhausen condition is satisfied?
Apr24-07 08:09 PM
waht
10 6,901
I have been trying to understand how 240 voltage works in devices such as motors or heating elements I know that...
Apr25-07 12:03 AM
Averagesupernova
3 4,239
What is a Peltier Coefficient? \dot{Q} = \Pi_{AB} I = \left( \Pi_B - \Pi_A \right) I where \Pi_{AB} is the...
Apr25-07 01:07 AM
Mk
6 8,859
Hi All I would like to build a synchronous detection circuit for detecting the real and imaginary part of the...
Apr25-07 10:18 AM
berkeman
1 5,257
I have a 12 volt car battery hooked up directly to a 6 gauge wire that is wrapped around an iron rod. For some reason...
Apr25-07 12:35 PM
rashean123
7 2,898
I took apart a Staples Easy button toy to see how it worked. Its very simple; attached to a circuit board there is a...
Apr25-07 08:21 PM
waht
2 1,582
Hi, I am looking to build a basic spectrum analyzer (if that is what you would call it) out of some LED lights for a...
Apr26-07 09:06 AM
NoTime
11 41,573
Hello All, I did a simple mutual inductance experiment recently which involving two coils (5 turns each) in series...
Apr26-07 10:18 AM
berkeman
13 6,216
Good Evening All, I've put together an Excel sheet (16 Kb ZIPPED) to act as a specific purpose calculator, into which...
Apr26-07 08:25 PM
GarageTinker
0 2,485
I just bought a 320w TEC to cool my processor. But the problem is, I can't afford a power supply that can provide...
Apr28-07 01:54 PM
GeordiLaForge
5 9,856
I am taking an applied class on complex variables and studying fractional linear transformations. I am given the...
Apr28-07 03:55 PM
abdo375
1 1,520
So I'm pretty well finished with all of my 300 level courses. Basically, I've got all the basics. I was wondering if...
Apr29-07 12:53 PM
moe_3_moe
4 1,825
hi guys...my question is kinda weird.. i want to add 1 byte to another 1 byte and get the result on 7-segments...
Apr29-07 11:01 PM
NoTime
10 8,815
Its been 30 years since my last Physics course so while I have the basic concepts I'm uncertain how to solve my...
Apr30-07 05:00 AM
oldguy
5 3,081
Our professor gave us some homework and one of the problem statements reads: "Design an impedance matching network...
Apr30-07 05:10 PM
ENGRstudent
12 4,328
I'm building a simple motor out of basic materials and at the moment its very similar to this one:...
May1-07 09:29 AM
Danger
1 2,933
Here's an episode of brainiac, where they test how much an electric fence is shocking:...
May2-07 04:33 AM
Office_Shredder
3 1,503
Please could someone explain to me the relationship between the current and the slip value of an induction machine. I...
May2-07 09:06 PM
olebuckeye
1 3,136
This is my first post and I joined this forum to elicit some help with a aggravating situation. There is a public...
May4-07 12:31 AM
NoTime
7 2,927
Hi folks. I have read in several papers that the electric field intensity adjacent to the very tip of an electrode...
May4-07 06:41 AM
rpiengineer
4 3,265
Hi Guys As the title...I am now having a 10 turns coil, does it really matter that I drive it with sinusoidal...
May4-07 09:35 AM
waht
3 8,251
Hi, I am curious to know what is a typical numerical value for the attenuation coefficient of common optical fibre....
May4-07 10:39 PM
light_bulb
12 14,363
Anyone got any experience? Don't need anything with the accuracy of a CRT oscilloscope but ease of setup,...
May5-07 05:14 AM
light_bulb
5 1,390
hey i m kinda new at making radio controls..... just made a simple RC with a 2 bit Tx- Rx kit that i got from a local...
May6-07 11:48 AM
Stingray
1 1,309
If I have a sheet of copper, how can i calculate its resistance? do i just take the surface area of the thin side and...
May7-07 01:18 PM
berkeman
1 6,033
hi guys need some component that will take in 12 VDC and put out a negative 5V AND a positive 5V - just a very...
May7-07 01:20 PM
berkeman
1 2,237
:uhh: hey guys, I'm new in the field and I'm running into this basic problem that's giving a headache. I got a...
May7-07 03:48 PM
Danger
2 983
Hi, I have an electrically-actuated shutter that can be either in the "closed" or "open" positions. I want to use...
May7-07 04:09 PM
Hareslade
4 22,845
hello all! Does anybody have any idea how i get get a transfer function for a Linear Variable Differential...
May7-07 10:38 PM
NoTime
1 3,620
Hi, I started a project a few months ago to replace the voltage regulator on my car's alternator but I had to stop...
May8-07 10:30 AM
Adder_Noir
11 3,087
Hi, i am trying to connect the IC 74LS166 (Parallel in / Serial out) to my design, but i´m having trouble...
May8-07 01:26 PM
N468989
2 5,287
Do you know of any easy way to limit currents in electronic circuits? For example, if I'm using an H-bridge driver...
May8-07 04:05 PM
waht
7 4,167

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