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Hello, I haven't learned anything about micro controllers yet but I wanted to get a head start since I hear that...
Apr19-14 03:36 PM
meBigGuy
19 378
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...
Apr10-14 04:04 AM
mwvivi
189 61,113
I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ...
Feb4-14 04:57 PM
davenn
62 59,632
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 47,199
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 26,024
Hello, I have the following problem: I would like, from a tungsten filament which an electric current is imposed,...
Apr14-13 05:50 PM
Carl Pugh
1 845
What is a difference between sine Signal Generator and AC power supply?
Apr14-13 02:40 PM
rbj
2 547
When a charge is placed next to an uncharged conductor, a mirrored image of that charge is created on the other side...
Apr14-13 01:09 PM
pumila
5 893
I think I am starting to understand various aspects of electrical generators, and I wanted to run this by the forum...
Apr14-13 09:27 AM
jim hardy
6 711
Does a DC transmission line for a given amount of power, do better at higher voltage? I know power is the product of...
Apr13-13 06:09 PM
rbj
6 925
Hi everyone, I am using a signal generator in series with a RLC circuit, generating an AC signal at 1kHz. I have...
Apr13-13 01:50 PM
sophiecentaur
24 1,221
I was wanting to get some hands on experience with AC current circuits. I have been tinkering with DC circuits on a...
Apr12-13 08:45 PM
mishima
26 1,969
I'm in high school studying physics(equivalent to pre-uni) and I find electricity a tricky topic so I usually work...
Apr12-13 06:49 PM
berkeman
1 357
Hi forum! So I was trying to learn how to use PIC In the tutorial,they said I should add a bypass capacitor between...
Apr12-13 04:01 PM
lulu1000
2 615
I designed the BJT amplifier below. After substituting in for the values of the actual resistances measured in lab, I...
Apr12-13 03:21 PM
jim hardy
10 750
Hi. I'm currently trying to build a circuit in order to control a small pump motor from an ardupilot mega 2.5...
Apr12-13 12:40 PM
schip666!
1 390
I need to use the analogRead feature of an Arduino microcontroller to read the peak value of a sinusoidal signal. I...
Apr12-13 02:38 AM
Jiggy-Ninja
4 648
Essential matrix E is a 3x3 matrix that incorporates the epipolar geometry of stereo vision. x'Ex=0 where x' and...
Apr12-13 12:02 AM
ilvpat
0 325
Given a discrete time signal x that has a DTFT (which exists in the mean square convergence or in the uniform...
Apr11-13 05:26 PM
CAVision
0 476
hi gang, just a quick clarification please :) was looking at the Wiki articke on Frequency modulation ...
Apr11-13 11:57 AM
skeptic2
10 882
In the amplitude modulation equation, V=(Ec+Ei*coswt)coswt I dont understand why the instantaneous value of...
Apr11-13 10:12 AM
sophiecentaur
1 503
Note, this is in the USA, where the street lines are 4,800vac (I think?)...and the lines from the pole are 220VAC to...
Apr10-13 02:41 PM
radio_guy
4 487
Hey In many places on the Internet you can read how the Nyquist frequency must be at least as high as the signals...
Apr10-13 04:52 AM
freddyfish
2 511
Hi, my friend and I were having discussion on the efficiency of a steam boiler in our thermodynamics lab (he has a...
Apr10-13 12:30 AM
gentatsuki
2 515
Dear Friends, what is the best way to do Earthing for Diesel Generating set? 1. Two different earthing pit for...
Apr9-13 08:28 PM
upendra badal
0 464
http://sub.allaboutcircuits.com/images/00291.png So i'm reading that in a capacitor, an electric field is being...
Apr9-13 07:36 PM
jim hardy
6 685
hello, i am deriving an equation for designing an inductor in a coupled RLC circuit. is there an equation for...
Apr9-13 04:27 PM
abhierao
3 633
This is a prediction that is made every day. If I do a back test assemble a curve composed of each days'...
Apr8-13 08:15 PM
Cardinal Gramm
0 359
Hi, ive read that the max length of UTP and STP cable segments is 100m? Does this mean that a repeater is required...
Apr8-13 06:27 PM
berkeman
1 487
I have a GPS module whose footprint was placed on my main PCB by accident and need to find a work around. The EMI from...
Apr8-13 03:16 PM
haxor489
2 402
Hi, Im researching communication channels such as UTP, coax etc and I keep seeing them referred to with either M/k/G...
Apr8-13 02:52 PM
technician
2 411
Need to do something which requires adding a 2V DC bias to power coming out of the wall (120V, 60Hz), going to a...
Apr8-13 02:22 PM
0xDEADBEEF
11 1,060
Hello, I've been playing with transistors on a circuit simulator and found that it doesn't matter on an NPN...
Apr8-13 07:00 AM
Sylvia Else
7 642
Is there a mathematical equation for calculating the load angle of a generator? I'm trying to calculate the real and...
Apr8-13 01:16 AM
gerbi
1 1,000
I am having trouble figuring out how to design multistage amplifiers in general. I am working on a project in which I...
Apr7-13 03:40 PM
AlephZero
22 1,515
Hey Guys - Long time reader, first time poster. Im attempting to develop a prototype of a new product. Part of this...
Apr7-13 02:34 PM
clubgitmo
6 776
Hi, I'm looking into a project that involves powering a motor that requires 60 Amp minimum input, but this is being...
Apr7-13 12:42 PM
sophiecentaur
10 686
I know that if 1 and 0 goes through an OR gate, it gives 1. But how does the 1 come? how it works? thanks
Apr7-13 10:29 AM
silvercats
5 566
We have noticed in various electricity pylons/towers that groundwire or shieldwire is always placed at the top and...
Apr7-13 09:21 AM
anorlunda
1 370
Hi PF, I know the equations etc of entropy in information theory, but wanted to know the meaning of...
Apr7-13 08:02 AM
dexterdev
0 347
I'm using a TMS320F28035 (TI -piccolo series) microcontroller and it came to my attention that the chip only has about...
Apr6-13 07:42 PM
haxor489
1 402
Hello All, I'm currently working on a design for a high speed, half-bridge circuit for driving high voltage...
Apr6-13 05:25 PM
Jdo300
0 523
why in electrical machines we says that magnetic field transfer energy in air gap but isn't there electric field...
Apr6-13 05:14 PM
sophiecentaur
10 1,165
Long story short I am building a bottle rocket at uni. As part of launching this rocket we are using a flasher,...
Apr6-13 04:27 PM
clurt
1 399
Please tell me how to become a successful embedded systems engineer. What books should I study...? I have a Bachelors...
Apr6-13 11:27 AM
pairofstrings
6 1,933

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