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Hello, I haven't learned anything about micro controllers yet but I wanted to get a head start since I hear that...
Apr19-14 03:36 PM
meBigGuy
19 419
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...
Apr10-14 04:04 AM
mwvivi
189 61,210
I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ...
Feb4-14 04:57 PM
davenn
62 59,712
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 47,249
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 26,044
In my circuits class we were talking about bipolar transistors and our prof. mentioned that every bipolar resistor has...
Feb28-09 07:31 PM
adiman1984
2 6,791
Does anyone even make fixed power supplies of these values? I havent been able to find any so far.
Feb28-09 02:36 PM
Phrak
33 3,529
i have a used electric chair for my mother for our stairs. we installed it and it seemed to work fine for a couple...
Feb28-09 07:58 AM
Missouri Bob
10 1,946
i have a question and i will be glad if anyone could help you know if a current flow in resistance , a power is...
Feb27-09 05:14 PM
Naty1
2 1,286
Hey, bit of an odd projection question here, Im working on generating a current(enough to power a few leds) in a...
Feb27-09 03:40 PM
eatingblaa
2 4,794
HI, I'm currently using a microcontroller 16f877A. The Tx and Rx pins of my microcontroller will output either 1 or 0...
Feb27-09 02:07 PM
Averagesupernova
6 5,795
I need to make a pulse of varing length. Either I need a VCR/VDR to control the length of a momo stable pules, or a...
Feb27-09 11:39 AM
madmike159
3 1,529
hello friends, i have put two photographs in which coil & magnet assembly is shown. I would like do the following:...
Feb26-09 12:43 AM
chi_visor
0 823
I am trying to figure out how to close a simple switch with a microcontroller. Do I need a relay to do this? Please...
Feb25-09 08:14 PM
berkeman
5 1,091
Hi All: I plan on producing a laboratory tube furnace capable of = to or > 1300 C. Does anyone have any experience...
Feb25-09 04:46 PM
KYPOWERLIFTER
1 2,181
Hi I have a question to do with using PWM If for example I had a 1ohm load and a voltage supply of 4JC-1, I would...
Feb25-09 01:57 AM
GlynnHeeswijk
5 1,395
I am making a high intensity LED light panel for my aquarium. I got 15 1w Luxeon white LEDs rated at 350mA max...
Feb24-09 11:24 PM
malaybiswas
2 3,906
I want to make a water heater from an insulated 50 gallon bucket, but I could easily use a different size container. I...
Feb24-09 10:46 PM
berkeman
10 2,534
Hi All, I'm an ecology graduate student trying to do a bit of electrical engineering and having zero success. The...
Feb24-09 06:42 PM
berkeman
2 1,006
OK so I've been reading a lot about gates and Boolean logic lately and I understand how they function but if somebody...
Feb24-09 04:10 PM
Proton Soup
3 916
Dear All, How do i calculate the Electrical field strength in v/mm for a Kapton Insulated Cable. Conductor AWG...
Feb24-09 12:23 PM
nastyboy
2 1,259
hello im just confusing about the electrical conduction in the electrical circuits I mean, for example, -an...
Feb24-09 11:29 AM
johnotoole3
2 2,032
have 2 make project which involves comparing op-amp 741 and any one of the latest op-amps..can anyone suggest the any...
Feb24-09 08:47 AM
Topher925
2 1,236
Could someone help by recommending hardware to mount a prototype board like this:...
Feb24-09 07:01 AM
j777
5 5,699
I'm trying to start a new Open Source project for the design of a metal detector suitable for Humanitarian Demining. I...
Feb23-09 10:39 PM
Humanise
13 2,079
Hello, my last post may have seemed a little too long or complicated apparently, so I'll try to simplify and adjust...
Feb23-09 10:22 PM
mheslep
1 1,341
Does Cramer's rule work in frequency domain? For example, if we have to solve two simeltaneous equations, as in nodel...
Feb23-09 04:07 PM
ravioli
1 3,301
We are using a DAQ (data acquisition) board for our project, that has only 2 analog outputs, but we need 4. It also...
Feb23-09 01:21 PM
berkeman
4 3,128
I am making a project to control the speed of a DC motor using an astable. I need to be able to change the speed of an...
Feb23-09 12:58 PM
madmike159
4 1,180
Hi I've learnt about voltage adder circuits using op-amp that add two or more DC voltages. But is it possible to...
Feb23-09 07:27 AM
kiamzattu
11 11,506
hi, i'm working on a project where i'm using a ttl 7400 ic which need +5v Vcc, how can i use 5v from a battery 9v,...
Feb23-09 03:39 AM
MATLABdude
1 2,391
can any engineer show me how we can calculate the busbar for any distribution panel assum that we have 800A...
Feb22-09 10:54 PM
megatronic
2 20,200
Hello, I am trying to find an estimated value (or range) for the current of an electric arc. I imagine this may...
Feb22-09 02:05 PM
mgibson
5 6,352
I've decided I want to go to school and start taking some math courses toward an electrical engineering degree.I...
Feb22-09 01:40 PM
Macwoni
2 747
Hello everyone, I’m a first time poster here on the PF and I come to you, the community to help me and my team-mate...
Feb21-09 09:50 PM
polosportply
0 3,364
Bearing in mind safety margins, how much current and voltage should I supply an LED if it's rated as such: Forward...
Feb21-09 09:22 PM
Redbelly98
19 15,785
i cant find PSK chip for my project. Actually i am student of Electronic Engg. and doing a project on serial...
Feb21-09 06:56 AM
abs_heroever
7 2,666
I'm studying a portion of a schematic from an evaluation board. What's the purpose of R20 in the attached schematic?
Feb21-09 05:34 AM
Phrak
6 1,414
Hello everyone and thank you for having me on the forum. I have a bit of a unique situation in which our very small...
Feb21-09 05:06 AM
m.s.j
2 1,526
Can someone explain to me what a 3 phase IEC Contactor/starter is, how it works, and what its used for? Thanks
Feb21-09 04:54 AM
MATLABdude
4 1,919
Hi everyone. I am trying to design a timed vibration device that I can use for my son. He has a mild form of autism...
Feb20-09 08:43 PM
dlgoff
6 1,228
Quick question, I am taking this analog design class and the class includes a project which requires design...
Feb20-09 05:06 PM
Proton Soup
8 2,385
Are there any programs around which will do this? I initially thought of Sonnet, but after some thought, I began to...
Feb20-09 02:20 PM
SquibblyWibbl
10 3,493
So I'm fairly certain breadboards cant handle 4 amps, and pcb is a bit too expensive for our budget (and not really...
Feb19-09 07:18 PM
berkeman
1 1,058
I posted a thread thats still visible concerning homopolar designs. This thread is spin off from it and I hope I get...
Feb19-09 06:52 PM
berkeman
25 1,587

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