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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
http://www.flickr.com/photos/53512951@N06/8229416013/in/photostream/ With regards to the circuit in the image...
Dec1-12 07:51 AM
jim hardy
7 1,092
Hi all I have this Maxitonix 500-1 lab thing which I bought years ago and never got around to doing anything with...
Dec1-12 06:14 AM
Dixo
2 679
When calculating power in a given circuit, why is the complex conjugate of the current used to compute power?
Nov30-12 08:23 PM
d.arbitman
2 668
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
1 475
Ive never understood why outlets have 3 holes. The two at the top are the voltage in and voltage out, correct? So why...
Nov30-12 01:39 PM
SirAskalot
2 624
Hi I would like to know is it reasonable to make a astable multivibrator that is fed from about 325v dc , the...
Nov30-12 03:35 AM
Crazymechanic
3 971
Hi, I have a solar panel currently charging two 6V batteries after being sent through a solar regulator and was...
Nov29-12 11:58 PM
MATLABdude
15 1,552
Why do they use two different switches, one for the low voltage source and another for the high voltage source, to...
Nov29-12 09:48 PM
wally25feb
2 765
I realize this post is long, and maybe even not meant for this forum, but I could really, REALLY use some solid advice...
Nov29-12 09:29 PM
yungman
5 1,165
If I had a step down transformer of 300 VA in size at 45-0-45 Volts@3.3 Amps with a regulation of 10% could I do the...
Nov29-12 07:15 PM
mp3streetpart
2 682
Hey, I'm looking for a robust connection to microcontroller pins, just wondering what everyone has found works...
Nov29-12 05:18 PM
berkeman
3 510
Hi, I'm an amateur rower exploring the ways of measuring the speed of the boat through the water. I am attempting to...
Nov29-12 10:26 AM
jim hardy
4 1,061
hi, i want to design a foldback current limiter circuit whose max current limit is 3 Ampere and short circuit...
Nov29-12 06:36 AM
basitccp
6 1,358
hi there! I have a bit stupid question: Imagine a solid metal cylinder. We put a . Explain to me please the...
Nov29-12 06:26 AM
dkastz
4 674
Hi guys, I'm a transfer student, and I've wanted to do electrical engineering. My only problem is i love the idea...
Nov29-12 02:58 AM
yungman
8 1,381
Need some ideas on how to debug a POR issue - I have 2 major ICs on my board - MCU(atmel) and Ethernet...
Nov29-12 12:28 AM
yungman
3 566
I was using a signal generator to perform some tests. The circuit was simply the generator in series with a 1 ohm...
Nov28-12 08:08 PM
F.ono
7 1,334
Hi http://i50.tinypic.com/bzpc3.jpg The above picture shows the electrical circuit I'm using for controlling a...
Nov28-12 06:44 PM
mechapeno
0 725
Dear all, I have an urgent task of finding the right experimental modules for Power Electronics Course in my...
Nov28-12 02:16 PM
Windadct
3 1,114
I recently found a 24v scooter on Craigslist. I would look forward to wiring a horn to it. I don't know what kind of...
Nov28-12 01:34 PM
davenn
5 963
Hi everyone, I have a sound wave representing a piano piece played at a steady tempo, and would like to get a graph...
Nov28-12 10:25 AM
dlgoff
9 1,245
Hello, after failing on a few circuits I thought I need to be able to swap and change my components a little more...
Nov28-12 10:10 AM
sophiecentaur
5 812
hello, i am new here and this is my first post so please bear with me for any mistakes or so.. now my...
Nov28-12 04:58 AM
learner07
12 16,731
So i was dinking around with my multi meter and i noticed that if you touch the positive end of a battery and the...
Nov27-12 11:58 PM
berkeman
1 452
Hi PF, Actually the information signal can be represented as real signal. Then why do we go for complex...
Nov27-12 10:49 PM
the_emi_guy
9 1,094
I have a temperature probe that I amplify with an OP amp and the circuit has to sit next to a video transmitter...
Nov27-12 08:16 PM
yungman
11 1,449
I have bought just four mains voltage LED lamps, in my life. Three of them have failed. One has failed after only a...
Nov27-12 03:46 PM
sophiecentaur
21 1,646
Hello, I am trying to design a circuit that can measure the BETA of a PNP and NPN transistor, I have an ammeter, and I...
Nov27-12 09:44 AM
sophiecentaur
9 1,478
Hi, I have a question here concerning importing mesh into Ansoft. Is it possible to import mesh created by softwares...
Nov27-12 07:23 AM
susanlwm
0 362
Hi, I would like to know the technical approach that can be used to determine thses values: N Level As shown...
Nov27-12 01:13 AM
Hzaqa
1 897
I'm working on a project that uses solenoids for mechanical activation. The solenoids have lugs for the + and -...
Nov26-12 11:40 PM
the_emi_guy
4 521
So this headset has stereo sound and a mic, but the connector only has a tip ring and sleeve. So which part of the...
Nov26-12 10:19 PM
berkeman
1 353
Hi, I have x(t) = 1/2 + cos(t) + cos(2t) so I can see that a0 = 1/2 and that it is an even function so there is...
Nov26-12 06:08 PM
berkeman
3 698
Hello, I have a transistor (BC547B) that is being used as a switch, connected to the base I have an 9v battery and an...
Nov26-12 04:10 PM
Studiot
14 1,140
I had the pleasure of using and seeing the schematic of a two stage magnetic amplifier that was used to control the...
Nov26-12 03:12 PM
wvphysicist
5 1,163
For a npn transistor, Vb= +0.7V ,Vc=+1.0V , Ve=0 Then my teacher says it is not operating, why is that so? Thank...
Nov26-12 02:25 AM
Studiot
29 1,810
I have no idea what is to be done. Please help! I do not how am I supposed to proceed/begin as well. The zip...
Nov25-12 06:00 PM
coolrp
8 966
I'm working on a project were I will be using Heating Plug Element-...
Nov25-12 03:00 PM
dlgoff
5 789
Hi, i've just started using the formula for the abovie which is given as: n t^3/2 exp(Eg/2kBT) however instead...
Nov25-12 11:17 AM
jendrix
2 539
Good day people. I am new here and discovered the forum while trying to answer this question. I have a large variety...
Nov25-12 10:54 AM
Windadct
5 846

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