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Jan16-12 Greg Bernhardt
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 6,964
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 5,825
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 78,953
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 89,144
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 56,387
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 30,254
i want to make circuits about 1- run and stop motor by two push buttons N.O with number of relays 2- run and...
Apr10-11 06:49 PM
legendhollow
0 475
Please, I am searching for master Thesis topic in electrical Power engineering: Power System Analysis, Power Systems...
Apr10-11 10:13 AM
dlgoff
1 3,122
My friend asked me what does a 540 MW power plant mean and how to interpret, I said it can lift a 1 Kilo Ton object...
Apr10-11 07:57 AM
dmssrinivas
2 943
Greetings. I'm making some experiments with DTL circuits, and i wonder if i missed something obvious when piecing...
Apr9-11 09:50 PM
Proton Soup
2 1,507
The two power transformer 69/22.9kV and 230/69kV are both rated 60/80/100MVA designed for 60 Hz operation. However it...
Apr9-11 09:05 PM
able357
13 7,362
We are going over capacitors in AC and DC circuits in my circuits class and I was reading over the applications of...
Apr9-11 04:34 PM
Bassalisk
10 1,445
Hello, This should be a simple question for you guys. I want to buy something very similar to this...
Apr9-11 02:29 PM
dlgoff
8 2,639
The convention is that the electrons flow from + to - But in reality they flow from - to + I don't get it. Why...
Apr9-11 02:18 PM
Jiggy-Ninja
56 5,556
From what I understand: P=+iv (current enters through the positive polarity of the voltage, implying that the element...
Apr9-11 02:35 AM
Charismaztex
6 4,978
Hi guys, I am having real trouble to design a transmit filter for my OFDM system. Here is the scenario. Initially...
Apr8-11 07:32 PM
thavamaran
0 1,193
I was at a home today which a while back had a lightning bolt strike the chimney and explode the top of the chimney...
Apr8-11 06:56 PM
Averagesupernova
2 1,852
Hi, At my house i have in wall stair lights that are 20W halogens (x3). A week or so ago i switched on the 2 way...
Apr8-11 04:33 PM
berkeman
3 1,075
Hobbiest here trying to make a rotary switching system to switch between a 1000w DC power supply and an external DC...
Apr8-11 01:27 PM
Fish4Fun
1 1,485
Hello, I'm just a poor little boy who is mystified about getting a start in the wonderful world of electronics. Do any...
Apr8-11 08:24 AM
Perfection
3 696
Hi i'm looking for a ferrite bead that will block 1-20 Mhz frequancies and pass all lower ones is it possible...
Apr8-11 07:21 AM
Phrak
14 2,976
Hi to all is it possible to use the same transformer in the range of KHZ on the one hand and on the other the...
Apr8-11 02:13 AM
aryenudelman
2 671
I don't wish to ask dumb questions about basic LED applications but ............... Yesterday I bought a 12 mcd, 5mm...
Apr8-11 01:26 AM
Perfection
2 2,292
i have a gas turbine generator 16MW iso POWER, and an centrofigual compressor with 5MW motor driven. I hesitate to use...
Apr7-11 08:43 PM
asdqwert123
0 1,289
Hello, Two copper cables have the same Impedance and Voltage but different Gauge. Will they act differently? ...
Apr7-11 06:06 PM
Studiot
11 2,035
Hi there, does anyone have experience with amplifiers in cryostats? I would like to have one close to the sample...
Apr7-11 05:23 PM
berkeman
1 903
I'm not too sure if this is the right place to ask for help like this, if not a point in the right direction would be...
Apr7-11 05:12 PM
OxDEADBEEF
4 968
Using TL084 and want to supply +/-5v for power. I heard there is a way to do it with 9v battery but I cant find any...
Apr7-11 03:37 PM
skeptic2
3 1,615
If you've got more windings on the primary (step up) then I imagine that there'll be more magnetic field lines flowing...
Apr7-11 07:48 AM
I_am_learning
7 5,554
I was wondering why it is when you use the electricity from an electrical generator, it bogs the generator down?...
Apr7-11 02:53 AM
Bloc911
4 1,569
I recently came across MIT prof. Walter Lewin's fascinating demonstration of a Kelvin water dropper, which can be seen...
Apr6-11 09:40 PM
KelvinDude
2 3,090
So i want to introduce myself, i went to Georgia Tech, and I got my BS in Biology, but ECE has always been kind of...
Apr6-11 04:48 PM
ssb2245
5 1,924
I know this probably sounds weird, but I have a research problem that requires "random" analog circuits. Basically...
Apr6-11 04:36 PM
Andrew732
2 680
In a field loss event, why does a shunt wound dc motor run away? From my understand of electric motor, the armature...
Apr6-11 01:13 PM
FOIWATER
6 10,193
What exactly is a zero-span circuit? How does it work?
Apr6-11 10:21 AM
vk6kro
7 7,648
Hi All, when a power system is in peak demand how come the generators that create the power experience a speed droop...
Apr6-11 09:25 AM
sophiecentaur
7 1,476
My electric kitchen-aid mixer recently began to make a high pitched whirring sound that increases in pitch with the...
Apr6-11 09:21 AM
sophiecentaur
12 1,476
I need to control a torque motor using variable voltage. I also need to have it rotate in reverse. Basically what I...
Apr6-11 06:36 AM
servo
2 2,264
I am looking for some information on antenna coupling. I am looking at coupling energy from one transmitters antenna...
Apr6-11 04:14 AM
sophiecentaur
16 9,724
I'm designing an interface between an ARM-CPU and a FPGA and have a pretty noisy channel between them. So I was...
Apr6-11 02:56 AM
Jaynte
3 919
hello forum, I am trying to read and learn about balun. Some transmission lines are said balanced while other...
Apr5-11 09:52 PM
vk6kro
31 7,688
After a refresher about basic principle of Induction motor, I realized that the torque developed by induction motor is...
Apr5-11 08:53 PM
I_am_learning
2 4,746
Hello, I would like to use (small!) thermoelectric generators to have 100 mW of power available for one device I am...
Apr5-11 04:41 PM
Enialis
0 732
Hello, I am seeking assistance with a design project for my engineering design class. We are tasked with developing...
Apr5-11 12:57 PM
dragonqi
0 1,140
I guess the title basically explains it. I'm reading over some circuits and can't figure out how to find total current...
Apr5-11 12:52 PM
jaredogden
3 2,960
hey i have a 5W pv panel and was wondering if i could build some sort of circuit to run my pool pump? was wondering...
Apr5-11 12:42 PM
booter10ca
5 1,349

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