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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 31,156
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...
Aug25-14 03:20 PM
Fuxue Jin
196 94,731
I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for...
Aug22-14 02:05 PM
Jamesangelo
28 58,411
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 82,749
hey all, has it ever been possible or even attempted to capture the vast ammount of electricty there is in...
May19-10 12:40 AM
taylaron
40 8,466
Hi, Iíve recently come across brushless motors and their use in rc cars. The motor can supposedly bring a power of...
May16-10 04:00 AM
Altrepair
49 8,075
Can someone give me a circuit diagram i can use to change the frequency of AC current?
May14-10 11:54 PM
sivapoliticia
19 8,129
Usually all of us observe thundering light at rainy day. A light is produced. Is that a.c or d.c Thanks
May17-10 04:58 AM
Ken Freeman
6 1,435
I am trying to understand Lenz law as it applies to an A.C. generator, Lenz law says " an induced current is always in...
May19-10 02:27 AM
m.s.j
2 1,240
I just want detail information about BJT circuits
May18-10 03:50 PM
Bob S
8 4,987
Hello, i'm designing an experiment that requires a short pulse of electricity at voltages above and beyond 10,000,000...
May12-10 09:30 PM
taylaron
5 2,334
Hi all, i am working on an 110W inverter (Dc to AC) project that the input voltages varies from 700Vdc-1000Vdc and...
May14-10 04:01 AM
Phrak
8 8,708
Hello all, I've been trying to measure the resistance of a pin, which the supplier spec at around 15mohms. I am...
May17-10 04:28 AM
sophiecentaur
14 5,026
Hey. I am currently working on building a circuit that should receive sound input from an electret mic, and then...
May15-10 07:54 PM
vk6kro
6 8,088
Anyone have a labeled diagram of the circuit in an optical mouse? Or know where I could find one?
May12-10 08:18 PM
Xitami
3 9,773
i need to know if i can convert the high amplitude low frequency based energy to low amplitude high frequency energy...
May17-10 03:32 AM
MATLABdude
27 3,718
Hi, I'm trying to compare the spectrum of male and female voices using Matlab. I'm using this code but I get this...
May17-10 12:15 AM
karthicknar
1 7,042
Hi folks, this might be a stupid question, I don't know, but I'm working on a design for a wind-driven alternator,...
May19-10 01:42 AM
m.s.j
10 1,909
I am trying to drive a 5V DC motor using a MCU output. The motor is run directly off the +5V line which is...
May12-10 07:09 PM
vk6kro
2 4,307
Well, I do under stand *what* they do but I have trouble understanding the purpose of these transforms in simple...
May18-10 08:23 AM
Okefenokee
6 11,048
Hi all, I have been trying to get a MCU to send a +5v signal and in turn switch a N channel MOSFET with a VDS of...
May13-10 07:29 PM
MATLABdude
6 9,762
Hi, I'm trying to build what a biologist would call a "stimulus isolator". That is, I have a voltage follower...
May13-10 05:56 AM
skeptic2
9 1,440
I'm wondering how I could make an extremely small speaker (ideally the size of a stack of 3 quarters) that played a...
May13-10 04:50 AM
MATLABdude
1 1,321
Hi! I'd like to know which DSP processor or DSP starter kit is suitable for the radar signal processing. Is c6713 DSK...
May13-10 01:44 AM
khaing071
0 891
I want to estimate the power of a CMOS inverter circuit. I want to ask that is there any software for simulation...
May13-10 01:42 PM
bilalarif
2 3,904
Hey. Im currently doing a bit of revision for an exam and I am struggling on the following question: I...
May13-10 09:09 PM
Averagesupernova
5 47,345
could one attach an op amp to a wifi transmitter to amplify the signal? thanks.
May13-10 07:28 PM
berkeman
2 898
Hi. I am working on a circuit to control a dc motor using a pwm signal. The problem is that the pwm source (a...
May14-10 08:50 PM
vk6kro
8 5,642
Today's ethernet networks we mention are broadband in nature or baseband? May mixed PCs send messages simultaneously...
May14-10 01:52 PM
LSE1234
8 1,132
Hello gang. I realized that my knowledge of electronics, circuits, and the like is appallingly bad for someone who...
May15-10 12:58 PM
digitalblggr
2 754
As the title says (and yes, I know it sounds a bit weird), what's the best way to make a warmable metal plate (70*45...
May14-10 07:13 PM
nucleus
7 1,968
I am working on a project where i have a single power source that is rather unstable and small, but produces a lot of...
May17-10 05:51 AM
Ken Freeman
6 1,491
http://upload.wikimedia.org/wikipedia/commons/9/9f/Thevenin_equivalent.png When we are asked to find the equivalent...
May18-10 10:55 AM
sophiecentaur
5 3,204
What is the meaning of the topleft most symbol in this Cockroft-Walton schematic? ...
May15-10 10:33 AM
Integral
2 3,121
Hello, I am working on a project which requires me to find the force between two permanent magnets. The...
May15-10 03:19 PM
needmagnethel
0 2,642
How do you define what is a fundamental circuit element? I am not realy sure, why isn't a transistor a fundamental...
May17-10 06:21 AM
sophiecentaur
4 1,932
i am currently using an atmega8 to control my lcd. i am using ic7805 voltage regulator to provide for its vcc. i...
May18-10 03:28 AM
MATLABdude
5 4,840
Hello, I've been trying to figure out the shape of the magnetic field that would accompany the movement of electrons...
May17-10 12:59 AM
taylaron
2 1,851
Need to find a pulse capacitor, rated to 1kV (or 700V) with a capacitance of above 2microfarads that is small enough...
May17-10 10:51 AM
PeterShaw
0 618
Hello there, I am so confused about the term battery specific energy (in Wh/kg) and specific power (in W/kg) ...
May18-10 03:10 PM
sophiecentaur
3 3,912
In the study of power electronics, many tertiary education institutions faced problem in setting up an electrical lab...
May17-10 09:55 PM
drummerboy123
0 3,756
i'm looking at these little ac motors that generate about 6 hp for 30 min for maximum load. it says it uses 120v...
May19-10 03:23 PM
Ken Freeman
6 3,865
Hi, I'm trying to create an IV plot of a device by varying the resistance of a resistor and measuring the current...
May18-10 11:26 AM
A.Smith
0 2,056
Suppose we have a fixed coordinatre system (x,y,z). Suppose an antenna is horizonally polarized. Is the...
May19-10 12:49 PM
sophiecentaur
3 1,581

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