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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 31,041
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 94,124
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 58,129
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 82,326
Hello all, Long story short: I'm modding a Netbook PC; I'm powering three different sets of LEDs from three...
Aug3-13 06:59 AM
WeAreBorrg
5 699
As a hobbyist, I was playing around with an MP3 player that uses a single alkaline AAA battery. I wanted to see if the...
Aug1-13 08:40 PM
steve stillman
5 3,591
We have ~78 underground pull boxes (12ft by 12ft) scattered around our 700m by 1500m yard that are passing 12kV cables...
Aug8-13 10:50 PM
wirenut
5 794
Hi! When my Hydroelectric station is not connected to a GRID (islanded mode) I control the frequency or the speed,...
Aug5-13 10:03 AM
Localise
48 5,019
I have an obsolete, proprietary crystal oscillator. It is a 200MHz, 10 pin, SMT component. The number on the unit is...
Aug1-13 08:51 AM
NascentOxygen
13 1,135
The images represents circuits interfaced with an Arduino microcontroller. http://i.imgur.com/yN135CD.png ...
Aug4-13 01:00 AM
meBigGuy
11 1,085
Hi, According to what I understood, when a terminal is connected to a line, it causes electrons to flow in one...
Aug1-13 05:51 AM
sophiecentaur
4 953
I'm self learning electronics and trying to wrap my head around its characteristics. I was looking at this source....
Aug2-13 09:07 AM
Jony130
5 977
A HVDC connection in a transmission network may reduce the system effective inertia due to the decoupling of...
Aug2-13 02:27 PM
jim hardy
5 746
I was reading some spec sheets for some leds, and it says that, for example, at 1.4V the light is at 650nm and that at...
Aug2-13 01:53 AM
NascentOxygen
8 932
I found 2 equation for calculating the peak to peak ripple voltage, this one is the common one i see, Vripple...
Aug1-13 02:03 AM
256bits
5 3,751
Got it for free it a samsung pn50a450p1d. The tv works fine except it screen color is pink with a little haze, can...
Aug3-13 05:26 PM
jim hardy
6 770
Dumb question - if the phases are tied together in a three phase delta transformer why don't the phases short out...
Aug2-13 09:00 AM
Windadct
2 577
Hi, I'm working on a project to build a solar powered AA battery charger. This is definitely not my profession, I...
Aug2-13 06:22 PM
NascentOxygen
4 782
Hi, I would like to know how a detectors bandwidth can be measured? for example, if there is any relation with the...
Aug10-13 09:45 PM
meBigGuy
26 1,880
Hi Sir, I have seen in many IEEE magazines that, a six phase induction motor is having two 3 phase windings spatially...
Aug2-13 06:54 PM
sophiecentaur
7 1,115
Hi all, I know about Kirchhoff's voltage and current laws when it comes to simple circuits with two-terminal...
Aug8-13 05:20 PM
amonraa
17 984
Hi guys, It's been 15 years since I played with radios, and i've basically forgotten everything. Do you think I'm...
Aug7-13 01:08 PM
petterg
85 2,938
I have a couple of linear motors + their drivers and I'm trying to make an X-Y stage for a prototype milling machine,...
Aug6-13 02:46 AM
Baluncore
3 510
I'm trying to use single ac frequency analysis to measure voltage, current, impedance and phases stuff... But the ...
Aug2-13 09:00 AM
null void
1 1,037
hi guys, I have just finished my undergraduate course. i decided on electromagnetics for my graduate studies, since...
Aug2-13 12:37 PM
dragornack
0 460
Hi guys. I am using a servo motor in one of my projects. I would like to calculate the power the motor is inputting...
Aug4-13 05:32 AM
meBigGuy
7 1,193
Hi, i'm trying to build a simple analog voice distortion circuit, without any ICs if it's possible. It can get pretty...
Aug12-13 04:38 AM
meBigGuy
5 1,007
Hi. I'm a newcomer to AVR and actually these whole electronics stuff. But.. I need to use this for my school work....
Aug8-13 07:39 AM
sherrellbc
2 532
I am wondering to published a journal on DC had drive generator. Could someone please me which should be my topic?
Aug4-13 06:19 PM
Simon Bridge
6 510
Dear Experts I am thinking that an electric hub motor is the same type of AC motor as a regular Outrunner motor. ...
Aug4-13 12:17 PM
sophiecentaur
1 594
Which spaces, as studied in branches of mathematics such as linear algebra and functional analysis, such as vector...
Aug7-13 10:32 PM
rbj
5 640
Hi I am learning about logic gates and am having some fun with them but somtimes in my designs I only have use for...
Aug8-13 07:16 PM
berkeman
16 1,026
Hello, I was considering a small project to solve an issue with PC case fans. If you have fans on the removable...
Aug5-13 09:43 PM
Integral
2 595
Hello everybody, I was working on an electronics project, and one of the LEDs (actually I'm using only one) started...
Aug8-13 07:54 AM
sherrellbc
4 608
I'm trying to understand what this IC is doing and what the "typical application" circuit is doing ...
Aug5-13 06:50 PM
berkeman
4 618
http://www.youtube.com/watch?v=bGb2lJdJJRE 0:30 "So if I have a magnetic field that's increasing increasing...
Aug7-13 01:20 AM
Simon Bridge
4 604
I have two wires, each 1 meter in length. They are at a parallel distances (d) of 5cm from each other. I send a...
Aug7-13 11:16 AM
TekuConcept
5 967
Hi, on page 23 of this datasheet (http://www.fairchildsemi.com/ds/LM/LM7805.pdf) the top figure 10 shows a setup for a...
Aug8-13 02:24 PM
mishima
7 727
In general, by what considerations guide the decision to size a capactior to smooth voltage signals? For example,...
Aug8-13 10:47 AM
mfb
3 673
I am trying to simulate the inrush current in a transformer when it is at no load, using the software Powerfactory. ...
Aug9-13 04:26 AM
Daniel Fuente
1 531
i have a problem : A small loop antenna in free space and centered about the origin on the xy-plane is producing a...
Aug10-13 10:06 AM
SteamKing
1 625
Im going to my 3rd year as a telecommunications engineering student in the university. I was thinking of applying to...
Aug10-13 06:35 PM
Megziflips
1 522
I cannot understand how this IC works from the block diagram given in the datasheet. I understand the concept of an...
Aug11-13 01:44 PM
sherrellbc
1 455
Can you guys help me out with books/resources on reliability engineering basics, specifically reliability of...
Aug12-13 10:00 AM
likephysics
0 377

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