Electronics Definition and 643 Threads

I've been working through our physics book for year 12 Physics, and only just now when we've hit electronics has it really confused me. I'd like to be able to understand it before our current 2 week school break ends. Perhaps the biggest flaw of the book is that it doesn't say how it got...

I'm not really new to Digital Electronics, but this is confusing the crap out of me. My school's started a DE class and at the moment we're getting all our equipment worked out and stuff, but for some reason NONE of our IC's work. We're using a 9-volt batter with a 7805 regulator for 5 volts...

As a freshman student in electrical engineering, I need some projects that are simple but enjoyable. I search it on google but results were not satisfying. If you know useful web addresses about this topic, please share with me. Thank you.

i am interested in weather or not a salvaged magnatron from a microwave oven will be enough to interfer with electronics if it were to be housed in an aluminum box with a tube on the side that the magnatronwould be emitting from to (direct the emissions)?

Wireless networking technology will one day deliver high-definition video content and other large data files via the airwaves far faster than that information can be now be delivered over wired systems. But it will take major advances in the electronics that drive computer and radio-frequency...

http://img48.imageshack.us/my.php?image=tinwhiskersscan2tc0.jpg Just recently where I work we had a large amount of electronics parts shipped back to us because some terminals had tin plating. I have never seen these tin whiskers before and I can't find a good explanation for what causes them...

Homework Statement In many laser applications the volume occupies by a laser beam in a gaiven crystal should be minimized. so how i can define that volume for a gas cell(n=1,00) that is 4cm long, using a laser wavelength of 633nm and placing the focus in the middle of the cell. Homework...

I am reading the manuals of an electronics measuring instrument, in which the term 'float' is repeated several times. Can anyone explain this term? Thanks in advance.

I took two semesters of circuit analysis, two semesters of electronics, two semeters of digital electronics, a semester of optoelectronics, and a semester of solid state electronics. I have a pretty strong background in solid state electronics, opto, digital, and circuits, but I feel like my...

hey guys, I want a book on electronics for christmas as ill be studying electrical engineering next year (ETH Zurich), so through amazon i found Art of Electronics, which has some great reviews. Anyways I am wondering if any of you guys has any experience with this book and can tell me how...

Okay. I'm just looking for someone to check my answer to the following question! I'm not sure this is the correct forum for such a question, if not, feel free to have it moved :) QUESTION: An a.c. supply of amplitude 20V and a frequency of 5 kHz is connected across a Resistor R = 4.7...

Greetings all, I thought I'd post my idea and plan for my digital electronics project here to see if I can get any tips or meet people who may have some expertise on this subject... The basic idea is a 'lock' that is opened by the correct series of input notes. Using a PIC, what I'm...

I am in a little dilemma. I have taken interest in a 2 year EET program at my local community college but am unsure if it is marketable. From my research, an AAS in Electronics Engineering Technology would qualify you for a technician's job. Are technician's in high demand these days? For...

What do you think is the best area to specialize in both? What are the major PROS AND CONS in both majors?

Hi, I'm a mechatronics and robotics student with the inteded speciallity robotics. I plan to to make a BS or a MS in these fields since, the college doesn't cover all the robotics subjects. I know allready C/C++ assembly and some notions about artificial intelligence(image processing, shape...

I'm having trouble learning electronics because I don't know what to start with. For example in order to learn about capacitors I need to know what they're used for. I know they store charge but I don't know what this stored charge is used for. When I read up on them it tells me they're used for...

There are 4 or 5 items plugged into the power strip, and it would be more convenient for the people I live with to simply unplug the power strip rather than turn off each electronic item one at a time. So, my question is, will I damage my electronic equipment (including an lcd monitor) if I...

Thought I might ask the pros here. I found it difficult to buy tin plated copper and so I took a copper sheet, put it in distilled water with a bar of tin / lead and ran current through it. (anode was in tin / lead bar) The results were amazingly good. Looked like a professional job and I...

hi sorry if the first question is a bit silly, but my knowlegde of electronics is pretty dull. 1. Question is about electron flow through a resistor. Amps are electrons per time unit, right? Voltage is the electrons energy or the amount of energy needed to move them from one point to...

Hey, I was wondering if anyone could provide a bit of a learning roadmap to help me eventually build and understand circuits. Someone suggested The Art of Electronics, but it's a bit over my head. I've been reading http://www.ibiblio.org/obp/electricCircuits/index.htm , but because the book...

I need to design a radio wave transmitter that transmit a specific code and a receiver that will only receive this code. what would be the best book to look into as a crash course for designing this?

Hey guys ... I have inserted a picture of the question as it was easier to scan than to re-write :P It's based on Switching Mode Power Supplies. Homework Statement Check the picture or the upload on photobucket http://i91.photobucket.com/albums/k320/shahilj/Q3.jpg" ... It is basically a full...

I am aware that electronic engineers moslty end up in circuit... so i was curious if we can do something mechanical... ie mecatronics or something like that. so have any bright ideas on how to move to that direction?

Hi all, I will be joining Electronics and Communication Engineering at National Institute of Technology Trichy(India) in a few days. My idea was to get involved in high tech industries like satelllite designing or avionics or things like that. I know i am pretty late when i ask you...

Hi all, could u just recommend some good textbooks about electronics? I'm a little familiar with it as I worked on some circuit in high school. Someone said "the art of electronics" and "Electronic Circuit Analysis and Design" are both good choices. Which one do u prefer? I can't go with both...

Homework Statement I have done an experiment at school, where the voltage drop across an LDR was measured at varying light intensities. The light intensity was determined by the distance of a light globe from the LDR (the light globe was part of an external circuit). Also the current flowing...

I'm sure there is a very simple answer to this but I can't for the life of me find it. I have a kit with the following component...

Here is a question I ponder sometimes: Does anyone know how they ground electronics in space? I was thinking that they might use a virtual ground. Does anyone know how it is done, for sure?

Im interested in doing my undergraduate course in something with regard to Electrical or Electronics. But i paticularly do not understand the difference between the two. I am more inclined toward electronics but because of the few number of institutes that are offering the courses in...

Homework Statement Part 1 - give the truth table for an XOR port part 2 - implement the results (from part 1) using only NOR ports Homework Equations The Attempt at a Solution So far I have tried combining NOR gates and have even used single input NOR gates (effectively turning...

Hi, I'm just getting properly into electronics. I'm curious as to how fast an analogue circuit can operate. I'm trying to make a circuit which can send an ultrasonic pulse but I need the pulse to operate only for 1/100th of a millisecond. Is it practical or even possible for ordinary...

What is the real future of this technology? Is it potentially the next revolution. It seems very intriguing and I am tempted to purchase a couple texts on the subject and work through them over the next few months. https://www.amazon.com/dp/3527312641/?tag=pfamazon01-20 This may be something...

Books?? Please I am interested in electronics and i am in need of a book which will do me good in clearing my fundamental concepts. Any recommendations. I have heard of A P Malvino and B Grob. Since i am i India my exposure to the international market of books. Anyway please help?

Homework Statement Given an ideal power supply of 15 V and a load of 5 kilo ohms, design a circuit using 2 resistors in which the current flowing through the load is close to 2mA Homework Equations None given (I'm assuming V=IR) The Attempt at a Solution I'm a bit confused...

What's the difference between Electronics Engineering and Electrical Engineering?

Hello, I am doing A level Electronics, WJEC. We have a project coming very soon, where we have to have various subsystems, and simulate a system. Could be anything really, from Washing Machine to Car Alarm system. So I was wondering, could anyone give me any ideas for a Project that would be...

I am a EE student and haven't done any hands on stuff yet, but have a broken shortwave radio and i wanted to fix it. I bought a 15/30w iron from radio shack and a desoldering vacuum. I also got some 60/40 rosin core solder with a .32 dia. I am a little worried about the lead in the solder...

I've been lately thinking about the factors behind inventing and the discovering of many things in our life specially in the electronics field, I really wish if I can ask a an electronics scientist or someone who knows the answer for my question, I already know that observation, thinking...

Hi, I am studing about p-n juntions and diodes in my Physical Electronics class. And, unfortunately, the book that I am using is not the greatest book in the world. Do any of you guys have any good books in mind that would be helpful?

Today I BOMBBBBBBBBBBBBBBBBBBED my electronics mid term. I think everyone did. I hope everyone does horrible and fails so my F becomes a B. That test was stupid, wayyy too long and hard. Multiple choice too. I had to guess a few at the last 30 sec and just put something down. I am so...

Greetings; I am just learning about electronics Is there a site that describes what each component in a circuit does with arrows describing electron flow and what it is doing along the way? I need diagrams. Thanks! Vern

http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/npnce.html#c3 Here is the explanation of npn junction in hyperphysics 1,what important to add the cap. inside the input and output circuit? 2,what difference after I select the remove the bypass cap. in the website? 3,what is the...

Hi, I was wondering, if you want to focus on physical electronics within Electrical Enginering, what kind of job you are looking at in the U.S? I mean, what do physical electronics people generally do?

http://www.du.edu/~etuttle/electron/elecindx.htm James B. Calvert, Denver, Colorado, 2001

I would like to start my own electronics engineering company in the future but have no idea what it will make :smile: . If you were to start your own electronics engineering company, what would your company be about?

hey, anyone here who can help me with basic electronics. i am confused with grounding and short circuiting a circuit.what is the difference in them and wat is the physical effect of that

hi! we are currently taking up our Fundamentals of Electronics subject and i just want to ask you guys if you know some websites that would help me understand more the Fundamentals of Electronics. Is there any tutorial site that you can suggest to a newbie like me? Right now we're on our...

hi out of my own interest i want to present papers in various symposiums. i am an electronics n communication enginerin student. i'd b obliged if u could provide me a list of probable topics on which papers could b presented in my field ( ECE) by me. thanks in advance narasimhan:smile:

I've never been to this forum before but I was googling the hutchison effect and also info about radio waves and the human body and that's how I found this place. I've read a topic dating back to 2004 and made me wonder if the human body can influence electronics like causing interference and...

Hey everyone, I need some help here... My question is: When a variable load is applied to a real source , explain the concept of a load line?? This is the load line in electronics...can someone please help me out with it...i can't seem to find a decent link on this topic... Any help...