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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
21 7,219
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
21 6,101
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
63 79,674
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
193 90,309
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
27 56,718
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
0 30,387
Question at topic title.
Sep20-11 04:06 AM
2 1,304
Hello, I have built an AM transmitter and now I can only receive signal within just 1m radius of the transmitter. I...
Sep20-11 02:53 AM
10 2,137
Hello everyone! I've been searching everywhere for useful info about this topic, but I haven't been able to find...
Sep20-11 01:30 AM
jim hardy
1 949
gain Op amp gain ( 1 2 3 ... Last)
hello, I have a strange problem! I wanted to amplify my signal and i used 2op amps, each of them has a feedback...
Sep19-11 07:04 PM
jim hardy
62 5,495
I thought I had a good understanding of transistors, but I have seen articles on how to tell the collector from the...
Sep19-11 05:15 PM
4 3,152
Hey guys I have a project that I am about to start working on. I am going to need a small level PLC to...
Sep19-11 03:55 PM
20 2,647
In short, if I want a given frequency, and I use BJT transistors, what would be the optimum capacitors and resistors...
Sep19-11 12:46 PM
4 1,428
Hello, Just trying to understand the role of the earth terminal in a electric circuit. Does it have the same...
Sep19-11 10:51 AM
1 777
Hi need some help here. I have designed a dc-dc boost converter to give output voltage of 11v from 6 v input. Well...
Sep19-11 03:53 AM
6 1,396
hi I am doing project on piezoelectric energy harvesting which is a cantilever structure using COMSOL. I have some...
Sep19-11 01:30 AM
0 718
Greetings. I am asking for help connecting a Wago 24vdc power supply to a Galil motion controller. I have a very...
Sep18-11 11:28 PM
1 1,265
What is the procedure to recondition the mineral oil used in transformer so that it become useable again. Any helpful...
Sep18-11 10:25 PM
9 2,649
How would the intense light from a massive thunderous lightning storm compare against regular daily sunshine in terms...
Sep18-11 07:14 PM
1 867
My teacher was going over a thevenin and norton circuit and i understand the thevenin and norton part of it, but the...
Sep18-11 05:49 PM
jim hardy
9 1,926
I am trying to understand how some of the standard ICs work in terms of simple components I understand, i.e....
Sep18-11 03:10 PM
6 1,929
Hi, If I powered a permanent magnet generator like one found in a wind turbine, with lets say with a 1/2 hp A/C motor...
Sep18-11 06:58 AM
1 886
hi, how can i detect colored(red) strip of tape. This is required so that I can digitally count the no of rotations of...
Sep18-11 06:15 AM
2 988
Hello all I want to buy few equipment. I want to set up my lab and start developing AC/DC converters. I have few...
Sep17-11 06:17 PM
2 1,208
What are the parameters for reliable digital data communication ??
Sep17-11 12:08 PM
1 891
Hi friends, here's my question. The two terminals of a PN junction are at different potentials so, if I connect a...
Sep17-11 09:26 AM
jim hardy
20 3,092
I am trying to understand when exactly the voltage is reflected from secondary back to the primary. 1. The...
Sep17-11 05:57 AM
3 3,660
1. When the CCFL tube lights up does it become a short circuit? 2. Are all CCFL inverters short circuit current...
Sep16-11 10:20 PM
6 2,353
I modified an astable multivibrator to send an alternating current across a load (square wave centered at 0V), given a...
Sep16-11 09:07 PM
3 2,056
which one is preferred 3-phase or single phase? in scott connection we convert 3 phase to phase is it possible to...
Sep16-11 08:57 PM
12 2,255
Hello. First off, I am not an electrical engineer, have no college education, just an inventive mind, and smart enough...
Sep16-11 05:25 PM
0 757
If a circuit is oscillated at one frequency what basic components (resistors, capacitors, inductors) or configurations...
Sep16-11 04:44 PM
4 804
Hi, if i add to different voltage source in parallel what will happen. I know that KVL forbid that and in pspice it...
Sep16-11 01:35 PM
Karim Shahbaz
9 12,646
Hello, I have a waveform that have noise when my pump stroke hit some mechanical part. i have converted...
Sep16-11 01:57 AM
0 610
I am trying to use a 0-5000 lb load cell with an Arduino. My issue is the 10 bit input on the Arduino. The load cell...
Sep15-11 02:08 PM
10 2,816
Hi! I would like to have a suggestion from this community about books that i could buy to design a battery managment...
Sep15-11 05:14 AM
0 1,346
I have been out for 6 years, I am looking for op-amp manufacturers. In my days, we had Analog Devices, Maxim, Linear...
Sep14-11 11:58 PM
0 1,592
Introduction: WolframAlpha is a freely available computational engine that can supplement already existing software...
Sep14-11 11:09 PM
9 39,497
I have been trying to learn electronics (I am familiar with the principles, just have no experience designing complex...
Sep14-11 07:11 PM
5 4,871
Okay, so before when I asked a question about voltage multiplication, I was recommended a charge pump. But now I...
Sep14-11 07:05 PM
7 1,278
Heya Everyone Ok so my question may seem a little silly but nevertheless I will ask. I need to know what you...
Sep14-11 05:00 PM
9 2,904
Hello everyone. I have a electrostatic question....
Sep14-11 11:13 AM
0 685
Hi Gents, new guy here. I'm an ME by degree ( 25 years ago.) but it's been a while since I've done any real number...
Sep14-11 10:27 AM
jim hardy
11 4,195
I don't understand why always we use open loop transfer function G(s)H(s) to draw the root locus. can somebody please...
Sep14-11 09:12 AM
1 2,129
When an inductor is oscillated at it's resonant frequency it becomes a parallel LC circuit (Tank circuit). At this...
Sep14-11 06:58 AM
3 1,139
Hi, I understand what phase and time-delay are, but can they be converted from one to the other? For example is...
Sep14-11 04:45 AM
3 3,349

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