Register to Post Thread

Electrical Engineering

- Uses of electricity and the equipment for power generation. Circuits, Fiber, Signals & Systems, Semiconductor Devices...
RSS Feed Icon
Meta Thread / Thread Starter Last Post Replies Views
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
0 31,249
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 83,071
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
28 58,586
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 95,233
Why transformers hum? I have heard two versions. Oxygen has unpaired electrons and it reacts to changing magnetic...
Mar12-10 08:19 AM
8 3,514
what can i do with a current source from 5ua to 270ua if i want some sort of active digital components
Mar12-10 01:44 PM
2 1,480
Hi, please, help me understand this circuit that is drawn here: ...
Mar12-10 03:40 PM
1 745
Hey guys. I bought this relay It...
Mar13-10 12:09 AM
10 3,045
hello, i would like to know something for this circuit ...
Mar13-10 12:33 AM
6 1,222
I was searching about the possibility of building a simple mobile phone, but I found an old topic here indicating that...
Mar13-10 05:43 AM
9 1,495
I was browsing a hobby supplies site, and I came across retract servos. What are they? I know what a servo is, but I...
Mar13-10 10:29 AM
4 3,007
Hi, I'm looking for a 6 pos, 2Amps, mechanical rotary switch that with every turn will short another contact to...
Mar13-10 10:36 AM
Carl Pugh
1 1,107
Hello guys, I have an upcoming test. When I was doing a question about finding the area of the wafer. it is circular....
Mar13-10 08:49 PM
3 2,258
If i connect 76 solar panels (3v each) (that are found in calculators) together can i generate voltage of about 230v...
Mar13-10 09:29 PM
1 1,393
I would like to ask you what it is meant by "symmetric input" in the instrumentational amplifier schematics and in the...
Mar14-10 05:00 PM
Bob S
1 987
Hi, this isnt a homework question, but this is one of the best technical forums Ive seen for stuff like this so I...
Mar14-10 05:10 PM
Bob S
6 4,062
I need to replace a switch that has printed on it 3A 250VAC or 6A 125VAC. Is it alright to replace it with a switch...
Mar15-10 03:47 AM
12 1,183
Hi Experts,o:) I am trying to reverse the direction of a spinning dc motor (around 30watts) but not sure how this...
Mar15-10 07:58 AM
17 7,009
I am just learning about this and don't know if I am doing it right. I need to turn my car on with a push button...
Mar15-10 12:00 PM
7 2,478
I have heard that 'we don't get shock from dc current because it is constant but we get shock from ac current because...
Mar15-10 12:52 PM
5 2,076
I'm just wondering, if an op-amp is connected in a positive feedback configuration, should the output not saturate...
Mar15-10 03:50 PM
Bob S
15 7,614
If you leaped onto an electric fence would I be right in assuming you wouldn't get electrocuted as long as you don't...
Mar15-10 06:04 PM
6 4,123
hi..i want to know if anyone of you can confirm of BS 142:1966 for relay coordination time is 0.4s? thx
Mar15-10 07:40 PM
4 2,320
Hey all. I am using a 555 timer chip to power an IR LED, which switches something on or off. My question is, now...
Mar15-10 10:08 PM
8 3,250
any body helps me that how can i generate electricity 12volts DC or give me idea to run car generater for 12 Volts Dc...
Mar16-10 05:02 AM
25 7,150
I have several 9vdc powered items that are used for scaring deer out of my yard. The device is motion activated and...
Mar16-10 09:30 AM
6 1,391
Hello, I am a student of electrical engineering of Madrid (Spain).. And I need to present a simple but original...
Mar16-10 09:52 AM
0 985
Guys, I have a Lister generator that is capable of producing approx 5KW of power from an attached ST alternator. ...
Mar16-10 07:41 PM
0 1,981
hi! everyone, um new to this forum and would like some help and few tips on designing a coding and decoding circuit to...
Mar17-10 06:57 AM
3 802
Hello, I have many time thought about AC & DC Motors, but have not yet find out. Example. if a motor of 4HP 48VDC....
Mar17-10 10:20 AM
1 3,843
I will state here what I understand in this topic which I am a little confused: If I have 2 sinusoidal signals...
Mar17-10 05:12 PM
0 1,240
What would be the best configuration for amplifying output from 555 timer chip? No matter what transistor...
Mar17-10 08:22 PM
9 1,600
I need a tool to simulate 'Kalman Filter'. I know Matlab maybe do it, but it's not so convenient. Would you introduce...
Mar17-10 08:47 PM
1 1,055
Hello, I am trying to design a foundation for an audio preamp that is powered by a single 9V battery. I am...
Mar17-10 09:56 PM
7 2,974
Hey guys, I am using the following circuit to switch on/off another circuit. ...
Mar18-10 12:16 AM
Carl Pugh
1 679
Hello Experts, I bought a top that has LEDs blinking when you spin it. It does not light up when not spun. This...
Mar18-10 12:44 AM
3 745
References are available to calculate skin effect, RAC/RDC given wire gauge and frequency. But my problem is a...
Mar18-10 04:06 AM
8 4,018
Hello all, I was wondering what the difference between a power amplifier and a preamplifier was. Someone told me...
Mar18-10 09:22 AM
1 6,662
In the book 'Virgintell' which has a lot of seemingly high ideas about science there is the proposition that light can...
Mar18-10 09:26 AM
2 1,612
I have made an onboard uncoupling device for my model railway,It works perfectly using the circuit from a toy...
Mar18-10 02:24 PM
1 1,059
I know as a fact that excitation (amount of current on the generator rotor) determines the amount of reactive power...
Mar18-10 07:34 PM
18 3,652
So I'm getting my water heater changed and my circuit breaker is probably wired wrong because we had to flip a bunch...
Mar19-10 09:51 AM
7 1,084
This is probably a dumb question, but I only need to know for a program I would like to write. Basically, on...
Mar19-10 12:28 PM
Bob S
4 925
I need some help identifying what I'm pretty sure is a resistor. I have a power supply that blew up, I opened it up...
Mar19-10 03:28 PM
8 2,008

Register to Post Thread
Bookmark and Share

Display Options for Electrical Engineering Mentors
Showing threads 6041 to 6080 of 15512 Mentors : 2
Forum Tools Search this Forum
Search this Forum :
Advanced Search