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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 7,455
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 6,309
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 80,149
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 91,052
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 56,964
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 30,499
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 1,167
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 2,256
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 1,464
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 4,093
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 2,741
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 1,077
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
3 951
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 1,311
hello im just confusing about the electrical conduction in the electrical circuits I mean, for example, -an...
Feb24-09 11:29 AM
johnotoole3
2 2,102
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 1,271
Could someone help by recommending hardware to mount a prototype board like this:...
Feb24-09 07:01 AM
j777
5 5,933
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 2,251
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 1,431
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 3,418
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 3,257
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 1,234
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 11,682
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 2,453
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 20,485
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 6,547
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
2 809
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 3,450
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 16,396
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 2,983
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 1,494
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 1,587
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 1,990
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 1,286
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 2,436
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 3,719
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 1,106
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 1,672
I have a mobile that i only keep for emergencies, the strange thing is, it will not turn on after a recharge, i have...
Feb19-09 04:24 PM
pallidin
2 1,690
I Don't know if this is the correct place for this post but here goes. I am looking for a supply house or distributor...
Feb19-09 06:44 AM
I forgot ohms
4 976
I was reading Nikola Tesla’s Inventions recently. I was really stunned to know that he transmitted electricity without...
Feb19-09 06:40 AM
Pumblechook
21 40,219
Hi, i want to know if there is a possibility to add a remote volume control to this amplifier above. I just have to...
Feb18-09 10:41 PM
rob123kv
3 16,628
Hey guys! I'm working on a little side-project and basically i need a compact source of a burst of electricity, so...
Feb18-09 07:32 PM
triden
8 1,128
Hello, If vias are covered with soldermask is it OK to mount an SD card connector with a metal frame over the top...
Feb18-09 04:19 PM
j777
5 1,396
I understand how a baud rate can be set by a clock and the data can be shifted through a line. Both sides need a...
Feb18-09 11:15 AM
mgb_phys
3 2,112
hi guys! i've been having some trouble thinking about power in DC circuits. i've been guessing my way through my...
Feb18-09 03:55 AM
MATLABdude
1 1,870

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