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Jan16-12 Greg Bernhardt
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 4,263
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 5,489
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 29,382
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 83,049
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 54,515
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 74,890
Hi all, For an applied electronics class I'm currently taking, we have to come up with and build an electronics...
Jan26-14 11:39 AM
sophiecentaur
17 696
I've found some resources online about building your own solar panels. The basic premise I've found is this: solar...
Mar7-09 09:43 AM
mgb_phys
8 3,133
Hi, I recently got it into my head that I would like to make an analog-digital interface card for my laptop such...
Mar20-11 08:47 PM
jsgruszynski
1 2,327
I built a welder using Microwave oven transformers, but I keep melting the secondary coil, and they are a pain to...
Jan12-11 08:40 AM
sophiecentaur
17 10,857
Good Afternoon, I'd like to build a wireless charging circuit from scratch, but I am unsure of where to start....
Oct20-12 04:33 AM
Enthalpy
6 3,619
What goes through an Engineer's mind upon designing a loudspeaker? Surely there must be some general guidelines, no?...
Oct28-13 02:09 AM
StarsFly
0 384
Good Morning, I was using the Digital Multimemter (DMM) a couple days ago and was wondering what inside the DMM...
Feb10-13 03:05 PM
milesyoung
5 642
Hello everyone I am new on these forums and wanted to ask if anyone knew anything about 3023 batteries. I have a...
Mar2-07 02:26 AM
light_bulb
1 2,831
I have two laptop computers but a car charger for only one of them. The charger says it produces 18.5V 4.9amps. Will...
Mar8-05 01:04 AM
iancoric
2 1,708
Hi, :wink: In the link given below circuit #1 and #2 are same except that they have opposite polarities for the...
Apr11-11 09:41 PM
skeptic2
4 1,368
I want to build a EEG and the site tells me to buy a PCB from some manufacturer. Will my product have competent...
Aug2-12 02:02 PM
Averagesupernova
33 3,243
In the field of computer science, algorithms are often assigned a "complexity" class that is a measure of the time...
Nov30-12 05:26 PM
yungman
1 471
Do circuits need to be used in Radar related hardware?
Jul14-05 04:03 PM
Matthias765
3 1,277
Consider the following circuit: http://storage6.static.itmages.com/i/14/0122/h_1390408792_3749447_6c069ce658.png ...
Jan22-14 05:56 PM
Averagesupernova
5 347
I was given a christmas present and i have now begun making it and ive run into a problem,:confused: does the colour...
Aug11-07 09:24 AM
premagg
11 12,267
I am not asking if they are considered as input into the armature's magnetic field. I strongly believe they are NOT...
May17-08 08:21 PM
Phrak
1 1,301
I'm in my 1st year of my EE program and I have found out that I'm not that good of a programmer. I'm learning assembly...
Mar1-11 02:49 AM
es1
4 6,995
I'm reading about properties of electrons in atoms, and it says an electron's position in an atom can be described by...
Apr12-12 05:55 PM
sophiecentaur
2 1,500
Hi, I was talking about this on another forum's general chat section and think you may be interested in answering this...
Aug1-06 06:14 PM
Cane_Toad
28 3,251
So I've been reading up on optical rectennas, and the sources I read say that the reason such devices are not yet...
May22-10 02:58 AM
sophiecentaur
4 1,039
Hi guys, As I've tried to convey using the topic title, I would like to know if (and how large the effect would be)...
Apr20-10 02:46 AM
Evertje
0 1,378
i have just purchased a digital lock that works on 12v dc... the lock has a transformer and a rectifier , hence i...
Jan8-10 11:32 AM
manshuk89
3 2,982
I have a 12vdc, 5Amp power supply and need to connect to a 12vdc, 40 watt electromagnet. I put a SPDT relay switch...
Mar4-11 08:21 PM
vk6kro
7 2,038
Hi, I am new to consulting business in India and wanted to know that if i use armored cable do i need to run it in...
Oct7-11 03:18 PM
dlgoff
5 1,197
$$Let\quad \vec { Z } =R+Xj$$ If X>0,then the impedance is lagging (current lags behind voltage).If X<0,then the...
Apr24-14 07:35 PM
jim hardy
5 307
I'm working on a robotics project that I believe could greatly benefit from the use of differential GPS. The robot...
May7-12 11:44 AM
murrdpirate0
2 1,513
I frequently teach my students about how basic generators work (motional EMFs, Faraday's Law, magnetic flux, etc.). ...
Aug8-11 08:07 PM
MisterX
3 2,007
I am currently planning a two-switch forward transformer driver, so as to avoid flux walking (which has been a...
Nov7-11 06:42 AM
cmb
0 743
I know that magnetic fields can effect electrons in certain ways, but I specifically want to know if a bar magnet just...
Feb5-12 05:00 PM
cjameshuff
6 5,789
Do microcontrollers have cache?
Apr28-06 10:08 AM
berkeman
4 1,507
When we do labs in classes we never connect anything to physical ground (always just "common" node), but in an actual...
Apr10-09 12:35 PM
EEJaime
8 2,281
The way I see it, the more the plates charge, the harder it is to charge them. Therefor capacitors always charge...
Jul17-12 05:12 PM
sophiecentaur
36 5,471
More specifically, do the leads on a TO-220 package MOSFET (like this) fit in the holes on a breadboard?
Feb5-09 10:29 PM
MATLABdude
1 3,391
Hi there , Can it be concluded that more the number of TR modules in an AESA radar more will be the emission ? ...
Nov5-12 03:36 AM
Debo Industry
0 727
Hello everyone I have a 110V hardware plugged in at home (we use 220V) by way of a step down transformer and I was...
Dec15-06 11:50 AM
russ_watters
2 5,711
Due to the fact that I don't have any plans on damaging my chargers (something I am not planning to risk at the...
May19-14 11:35 PM
meBigGuy
9 358
I'm just looking over some introductory notes to transistors and it says that BJT transistors are useful for...
Aug29-11 05:13 AM
Studiot
1 1,303
Question at topic title.
Sep20-11 04:06 AM
Femme_physics
2 1,300
I've set up RAM on a bus such that one chip takes the lower nibble and another chip takes the upper nibble of a...
Jan22-08 03:50 PM
berkeman
1 1,144
Hi, I think that anyone with some programming skills can create apps/games and sell it but what about...
Nov18-11 03:31 PM
yungman
9 1,385

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