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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
28 58,256
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 94,385
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
63 82,532
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
0 31,092
Previously I never noticed that we are making this abstraction - to abstract continuous systems into an idealized...
Feb27-13 11:43 AM
1 389
Hi, Here's a voltage-to-current converter circuit I simulated in OrCAD Spice. While the current is supposed to be...
Feb27-13 11:06 AM
18 1,109
Banging my head against a wall trying to prove to a coworker why the square root of three shows up in a three-phase...
Feb26-13 10:51 PM
jim hardy
13 10,645
In the US, most residential power outlets never have a wall-switch controlling them whereas whenever I travel (say, on...
Feb26-13 10:37 PM
13 860
suppose i want to transfer digital signals over 100 meter wire, the loic is implemented using two level, a +5 volts...
Feb26-13 05:48 PM
30 2,056
I'm trying to learn verilog programming because I have to for a class. However they have a tutorial that doesn't...
Feb26-13 01:12 PM
3 1,284
I have used many mobile phones and controlled volume on them but I have never been able to figure out how the volume...
Feb26-13 01:01 PM
11 994
I'm attempting to accumulate as many Application Notes from as many places as possible, and I would like some...
Feb26-13 12:48 PM
8 802
Hi, I'm working with a microcontroller that outputs 5V, 25mA max from each pin. I need to source 120-150mA. I'm...
Feb26-13 07:59 AM
4 904
Can anyone please clarify if the current in the primary coil of the transformer follows V(s)I(s)=V(p)I(p) when i am...
Feb26-13 07:18 AM
1 718
All, So I am working on a design project for a research group and their device requires an ultra-low power...
Feb25-13 05:57 PM
1 553
so lets say i have a motor and two sinusodial AC power supplies. they both have different frequencies but the same...
Feb25-13 04:32 PM
2 450
Im at work and i have a heated fan by my side. I decided to do a small experiment with air pressure. I placed a piece...
Feb25-13 04:29 PM
2 430
Hello, This is my first post here. Please excuse my poor English and grammar. I will try to make my questions...
Feb25-13 01:28 PM
jim hardy
3 524
Hi to all, i'm new to the forum and forgive me if i'm not in the right place. I have a drag knife sign making cutter...
Feb25-13 01:24 PM
jim hardy
5 605
Hi everyone, I'm about to start a MCU project that involves using a already hacked iRobot Roomba and taking video...
Feb25-13 12:32 PM
1 450
It is my understanding that this pic chip has usb wiring ability. Does this mean i can create a very cheap burner, or...
Feb25-13 12:32 PM
Mike Charlie
14 1,395 In the above link it...
Feb25-13 12:20 PM
1 521
Hi, I'm investigating what happens to bandwidth at resonance of a series RLC circuit when each component is...
Feb25-13 10:12 AM
4 577
Hello All, I am working on a project where I am trying to replicate the behavior of a particular inductance module...
Feb25-13 08:21 AM
2 643
The image attached is of an underdamped RLC step response. I know that I can find the damped frequency of the response...
Feb25-13 08:00 AM
3 3,998
Anyone has got an idea about a sound sensor ( that is really sensitive !!) , i.e., can sense the sound levels of 20-25...
Feb25-13 03:00 AM
2 397
Hi PF, What is the conceptual difference between potential barrier and potential difference? both have an electric...
Feb25-13 02:20 AM
6 905
Here's my circuit The question at hand is what happens when the trigger switch is closed during the timing cycle...
Feb25-13 12:10 AM
5 523
This is my first engineering course of many to come and I was hopping someone can shed some light on how to add some...
Feb24-13 09:11 PM
8 1,155
In a 3 phase slip ring Induction motor, 3 phase balanced supply is given to rotor winding & stator winding is short...
Feb24-13 06:01 PM
1 1,365
I just read this article from a while ago and it has me puzzled: Asides from...
Feb24-13 01:44 PM
0 289
How does the mass of a toroidal top load on a Tesla coil affect performance, assuming all dimensions are similar...
Feb24-13 01:11 PM
3 698
Hello, So here is my story.. I will have a bachelors degree in Applied Physics in May. My favorite topic in...
Feb24-13 11:21 AM
4 670
What's the trick to convert changes in current to some voltage equivalent? 50% increase in current --> 50% increase...
Feb24-13 09:57 AM
2 318
What are the most basic components I need to generate and recieve a radio signal and how would I arrange them? For...
Feb24-13 08:55 AM
5 580
Consider 2 cases case 1: no of rotor poles = 2 no of stator poles =4 case 2: no of rotor poles = 4 no of...
Feb24-13 05:25 AM
Simon Bridge
1 4,177
Hello, As part of a larger problem, I'm trying to understand the dynamic equations of the attached circuit with two...
Feb23-13 07:44 PM
Carl Pugh
1 476
Greetings, I am looking for equivalent of relay or optocoupler but in nanowatts range if there is any. I looked...
Feb23-13 06:47 PM
1 450
Hi Everyone, I'm working on some inductance calculations and was wondering if anyone knows of any formulas (or...
Feb23-13 05:03 PM
4 2,478
Hello friends.I was just wondering if a step up transformer can be used to amplify voltage signals like a...
Feb23-13 07:33 AM
31 4,100
How does sheet resistance change when comparing a flat sheet to a folded sheet? Is this change predictable?...
Feb22-13 09:44 PM
Simon Bridge
1 777
I was wondering if anyone knows of a USB GSM Module that comes with some sort of development kit. I would like to...
Feb22-13 09:16 PM
1 496
Basically, I'm a sophomore at Stony Brook University and I was doing biomed but now I think I want to be a software...
Feb22-13 09:13 PM
1 1,507
What exactly is the difference between Frensel reflection and total internal reflection with regards to the efficiency...
Feb22-13 09:12 PM
2 614

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