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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...
Y 03:36 PM
meBigGuy
19 310
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 60,864
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 59,507
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 47,107
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 25,990
Hello, I am an automotive technician so I work with a lot of 12volt DC motors. First, it seems to me that bad...
Oct5-12 10:02 PM
thender
5 1,166
Hello, I am planning on making a PSU for my home project. I got this probably 30 year old transformer from an old...
Oct5-12 06:04 PM
Bassalisk
45 2,487
Hi, I was wondering if anyone knew how to design a single supply difference amplifier... I don't want a comparator or...
Oct5-12 02:34 PM
akhurash
9 971
i am looking to build a device that can communicate with a phone and through that phone you could turn on or off a...
Oct5-12 01:51 PM
berkeman
1 548
Hi, I made a current limit protection circuit at 1A, and I would like to improve it with an overload protection. ...
Oct5-12 12:54 AM
mariuszoll
8 860
i want to build an inverter with solar panel can someone assist me on how to use thyristor to buffer it,and how to...
Oct4-12 05:08 PM
sophiecentaur
1 556
How big of a battery would it take to power the average sized home for 24 hours? Considering basic kilowatt-hour...
Oct4-12 05:05 PM
sophiecentaur
2 553
Ok, I want to start by saying I have been out of this field for some time and I have regrettably lost a lot of my...
Oct4-12 04:50 PM
sophiecentaur
3 759
Is there any specific thing called multi speed starter or is it the general name of all the starters which can vary...
Oct4-12 11:22 AM
encoder007
0 306
When sketching a root locus of a simple closed loop negative feedback system (with positive gain K).... if you have...
Oct4-12 04:03 AM
Shaybay92
0 601
I have a 2.5hp treadmill DC motor and would like to hook up a controller to it. Are there any products out in...
Oct4-12 12:32 AM
davenn
3 391
I do not understand section 8.6 of my lecture notes (see the attachment). 1. "If two low pass filters are cascaded...
Oct3-12 07:34 PM
ottmarkw
8 7,765
I was piddling with my meter and graphing calculator and came up with this equation y= .08x+.14 This equation...
Oct3-12 12:24 PM
es1
2 592
hello i have a question about the transformer core.when we make it's core,we usually make it laminated to reduce eddy...
Oct3-12 11:06 AM
Carl Pugh
7 890
Hello Everyone, I am looking Spice model for the MOSFET Gate Drivers (LM5111 & LM5112). If any one have this ...
Oct3-12 03:08 AM
uhdam
4 820
I have an electric motor that registers a .12 A draw off of a 2.76V source. This obviously indicates to you and me a...
Oct2-12 06:37 PM
Flyingwing12
6 925
Hello All, I'm designing a circuit board that needs to run on a 12VDC supply and will need to supply a fair amount...
Oct2-12 03:37 PM
skeptic2
8 1,401
Hi guys, can you please explain me what happens in the circuit i've attached? It looks easy but still puzzles me. I...
Oct2-12 04:36 AM
sophiecentaur
8 901
Hey guys. I made myself a pulse circuit but my power supply failed. Now I need a way to use a 12v magneto as a power...
Oct1-12 10:18 PM
NascentOxygen
5 555
I have attached a picture of the circuit in which I am attempting to build a transfer function for, however, as you...
Oct1-12 08:41 PM
NascentOxygen
5 1,119
I'm in grade 11 and we still haven't looked into how electricity really flows. Right now all we're told is that the...
Oct1-12 04:59 PM
sophiecentaur
7 1,283
I am new here and don't know if this is appropriate so let me know. I am not an engineer and no formal training other...
Oct1-12 12:41 PM
Dynodan
4 961
Hi, I have a bunch of spectra which happen to show some sinusoidal baselines, like this: ...
Oct1-12 10:10 AM
sophiecentaur
24 1,569
i have attached a bode plot and the opamp dc second order lpf circuit. the opamp Tl082 has a gain bandwidth product of...
Oct1-12 08:07 AM
NascentOxygen
10 2,538
I am currently building a circuit that produces a 200khz signal with a potential difference of 3 - 12 volts, depending...
Oct1-12 06:29 AM
NascentOxygen
3 1,374
Hello, I have a very interesting problem that surprised me, and as of yet have not been able to find a solution...
Oct1-12 02:46 AM
NascentOxygen
7 921
Fresh EE here that hasn't seemed to cover the main application of either a BJT or mosfet. When should you use one...
Oct1-12 01:13 AM
yungman
3 3,099
In a capacitor, specifically a parallel plate capacitor, ideally we have that capacitance is a function of...
Sep30-12 09:04 PM
Ratch
4 921
Actually this not a question, I want to justify whether my concept is right or wrong. So lets start. Faraday's law...
Sep30-12 08:00 PM
I_am_learning
4 1,219
reflection coefficient gamma = ZL-Z0/ZL+Z0. My question is can you calculate the reflection coefficients when ZL...
Sep30-12 07:39 PM
Antiphon
1 691
Hello, everybody. I'm reading through my EE textbook and I'm having some confusion about when to combine resistors...
Sep30-12 06:14 PM
dragonkore
3 657
I am trying to get a 24 V.D.C. solenoid to activate. I have a 24 V DC 600mA power adapter, a 5 VDC relay switch and...
Sep30-12 05:54 PM
Bobbywhy
6 1,127
hello there, im a undergraduate physics student currently working for my final year project and need some help from...
Sep30-12 05:50 PM
asifadio
0 422
Hello all, I've been learning and trying to reverse-engineer the logic, nature and anatomy of a stepper motor. In...
Sep30-12 12:42 PM
MachX
2 640
I am looking for average values of the signal-to-noise ratio for pulse width modulation and for a direct signal?
Sep30-12 12:04 PM
sophiecentaur
1 336
here is what Im trying to do. I got a Nerdkit to learn the basics of electronics(I'm not an engineer, just starting)...
Sep29-12 10:47 PM
davenn
4 897
I'm an mechatronics engineer student. My university offers Power Electronics course. However, it's not compulsory....
Sep29-12 05:08 PM
nsaspook
1 829
I downloaded PSPice student 9.1 and when I open the program and press File -> New -> Simulation Profile it doesnt...
Sep29-12 03:56 PM
samieee
2 910
I'm planning to work on a water cooling device for physiotherapy using a peltier. For this, I should be able to...
Sep28-12 11:45 PM
Kaycee92
4 960
polyvinylidenefluoride resin can be found in a film substance. can anybody help me by telling me where i could buy...
Sep28-12 10:33 PM
Bobbywhy
1 352

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