Electronics Definition and 643 Threads

I want to know the BJT implementation of flip flop with the help of proper circuit diagram..

I have been wondering for a while about how electronics are effected in space and what can be done to combat any adverse effects. My dream, get a homemade satellite into space. I don't need people telling me how impossible of an idea this is to accomplish, I simply came for answers. The...

So basically i have this powerful electromagnet that generates an electromagnetic field that can levitate another magnet and withhold a load of 12oz and still levitate: My problem is, I want to be able to use electronics and send wireless signals through this strong magnetic field. I can...

I have just read the following line: A vacuum tube was a glass device which used filaments as a source of electronics and could control and amplify electronic signals. Please remember that I'm not a student of science or math, so please keep your reply simple as much as possible. What...

Hi, I was wondering if anyone could recommend a good solid book(s) for self study of electronics design? I emphasize design because I recently finished an electronics course in college and have found that I am decent at solving book problems but horrible at designing circuits. I still have no...

hi all..can anyone give me some basic math book that would enable me to understand quantum physics and electronics(semiconductors,electromagnetic theory). Perhaps a good book that starts from vector basics would do fine i think. please guide me. thanks in advance.

Homework Statement See attachment. Homework Equations The Attempt at a Solution I am not familiar with questions like this. The usual op-amp i see have either of the terminals earthed so i need some hints to get started. Thanks.

Could you recommend me a book(or books) about electronics, electrial engineering, radio engineering : actually I don't know how does it call but I want to learn how to make radios, phones, displays, mice, computers, simple controller for computer and be able to make them. I am a beginner and...

hi there I am a mech eng second year student and i have some electrical modules that i have to do though i just don't have much of a intuitive feel for it like i do for mechanical stuff. anyway some stuff i really should know but dont. 1) ac circuits. these as a whole confuse me, my...

What career should I choose? I really don't know what I would like more and this is my first semester in college so I need two more years to learn about either of these field, however, I am taking a Basic Electric Circuits course for electronics engineering right now and well... most of is...

Hello, I am designing a solar powered rc plane as a project. I have an electric motor assembly intended to be used with an 11.1 volt battery. My solar array outputs around a steady 7.5 volts. When configured with a battery the motor drew around 9-10amps of current under full load. Making the...

what is the meaning of feed back in electronics? thanks.

breaking from the mold... I received my midterm exam back today for electronics I. While I did set the curve, I still performed extremely poor. I wonder if some curious minds could look at my performance and shed some light on some of the critical mistakes that I made... [please see...

I am first year electronics engineering student. I have been looking to do electronics projects . So I am looking all over internet to find the good electronics project tutorial. Most of them I found was useless. They give schematics and tell how they work and they stop there for now I have...

Homework Statement What is the impedance of the circuit? Homework Equations Z=1/iwC ... Z = R ... etc.. The Attempt at a Solution What kind of equivalent circuit can i replace it with ? I tried only two resistors and two capacitors first .. then upgrade it by two resistors and one...

is industrial electronics has scope in world

I am first year engineering(electonics ) student. I have much passion in this subject. But I know the passion is not everything. Following right way is important. Whenever I lok my textbook, then enormous and complicated circuits dance infront of me. Anyway I tackle them by brain an understan...

Hi.. I just want to ask a few questions about the Biomedical Electronics Engineering course that i have taken for my Undergraduate studies.. Here are the questions: 1. What are the future of this course? 2. Is this course really beneficial? 3. Where does the job opportunities in this...

Developing smaller, more efficient, and more powerful electronic devices has been the trend. However, as the size of the individual bits approaches atomic dimension, tunneling effects as well as heat-control are expected to cause major problems and essentially render the conventional use of...

I'm trying to learn to design digital circuits so as a project I wanted to build a counter that would work as follows: When a reset button is pushed, it will set the counter at 0 When a + button is pushed, it will add one to the counter when a - button is pushed, it will subtract one from...

Back up system designed to prevent the loss of memory in a car radio when the radio is removed from the car, how will you do this through electrical explanations..

So I'm currently in electronics engineering, however, I was planning on transferring to a school about 50 miles away so that I can switch to electrical engineering because my current school does not offer it. I asked my advisor and he said the difference between the two programs is the name...

I posted this thread in the Engineering forum, but haven't got any reply back yet. This topic is somewhat science-related, so I guess someone in this forum may give me some helps. Thanks.

Hi, I'm freshman in Electrical Engineering. I'm going to do a project on a major challenge in electrical engineering nowadays. I intend to discuss the limit of microelectronics at micro-scale and so the challenge is to go deeper into lower scale, i.e. nano and pico scale (pico-scale is quite too...

Hi all! Now from here, I'm going to do my engineering in Electronics and Telecommunication. But still I have the chance to change my discipline next year (as you all know). Do you think there is job opportunity in this field. Do you think there will be job for Computer Science and...

Almost a year ago I came upon a term, perhaps in some dictionary, defining the practice of electronics companies such as laptop makers where they miss some of the features intentionally to include in future releases. I no longer remember it. Could you please help me with that term?

HI all. I wanted to make a toy car (except battery and motor completely mechanical) which should turn and move along on detecting an obstruction. I saw such a toy car but unable to get the design. Please help guys...

I just started work in the lab and I'm finding myself having to build lots of circuits. Only problem is I have never studied these before ever, and don't even know the basics really. Can anyone recommend a concise intro to electronics which covers all the things I should know but not the things...

HI ALL Well i want to know the power electronics required to transmit signals for sensors,limit switches ,push buttons up to PLC, and if analog device signals like potentiometer could be transmit tted with these ,how can i do this . i am using Plastic Optical Fibre and please help me with the...

Firstly, sorry if this is in the wrong section. I'll happily move it if it should be somewhere else. Homework Statement What is the impedence between the base of the BJT and ground of the common emitter amplifier circuit. Homework Equations Ic = IE The Attempt at a Solution So I...

Can you please suggest some good books a learning Java and electronics? I have learned C++ and I plan to learn Java now. I also want to begin learning electronics by myself. Thank you Elixer

Hello gang. [I used the search but couldn't find much except for recommendations for Horowitz's Art of Electronics, so I apologize in advance if I missed a similar thread somewhere] I realized that my knowledge of electronics, circuits, and the like is appallingly bad for someone who claims...

A few questions about noise. I am doing a noise budget and I am not sure if everything is correct... 1/f flicker noise Resistors show this noise. Horowitz specifies microvolt per decade frequency per applied volt. This would give me a false reading on a four point measurement, at least...

Homework Statement A 1N4737 zener diode has a 7.5 V zener voltage and is rated at 1 W power dissipation. It is to be used in the circuit shown at right to regulate the voltage to a small radio circuit which requires a constant voltage of 7.5 V. The supply voltage can vary between 9 V and 12...

I'm trying to figure out how to build a breadboard instrument using either push buttons or logic switches as they keys that will play each note. The issue that i am having is that I don't think finding all of the perfect resistor and capacitor combinations for each note is a good idea. So, i...

Hello I'm designing a box for 6 PCBs. It will fly on stratospheric balloon. Do you know a solution of mounting PCBs to box walls, which will provide strong and stable connection? I was thinking about slots in internal walls, but that can be not enough. I found interesting solution...

I've been reading (and a few people mentioned it as well) that electronics, software etc is moving to Asia. By moving I mean that you can hire a company there to do the job for you for less money because salaries there are lower. The reason I can think of is that electronics / software doesn't...

I am planning to do a project based on wireless data transfer. I have a basic background in electronics only as far as flip-flops, shift registers, basic RAM/ROM circuits, etc. I plan to learn about wireless data transfer mechanism that is specifically relevant to the project. Can anyone give me...

Hi I'm doing my pre-final year Electronics and communication engineering in India. But i want my career to be in theoretical physics. My ultimate aim is to find the secret behind the birth and working of our universe. Previously due to my family's compulsion i took engineering. Now i want to go...

It says using diodes, resistors, and zener diodes only, design a circuit whose output remains zero for vin<3.6V, but equals vin minus a drop of 3.6V for vin>3.6V. and the circuit has to work when the input voltages are below 0 as well as above 0. and help is appreciated.

Hello. I was wondering if anyone here could recommend a book on analog electronics that doesn't shy away from the math, but isn't too advanced for my level (electronics-wise, not math-wise). For reference, I've gone through Floyd's Electronics Fundamentals (although I don't necessarily...

Hey guys, I'm a student in electrical engineering and I'm interested in learning about wireless communications and RF electronics but I don't really know where to start. I've taken three semesters of engineering electromagnetics but I still wouldn't say that I know much of anything about...

I am currently looking at a Tyco Electronics Multimode Relay MT. (Schrack division). I am wondering what it means in the description when it mentions CO contact configuration.

can someone recommend me a good electronics book to learn about h parameters of transistors

hi i am a physics graduate and have studied electronics but had problem grasping it. please suggest me online resources where I can learn electronics from the basics. thanks I Newton

Hi All, I've been looking around for a nice hand-held box for some of my various projects to go into. I usually find what I want through Digikey/Mouser/Jameco but thought I would ask you all if you know of any other good companies out there that specialize in interesting enclosures that can...

A beginning electronics book offered by radio shack that you can read is, a book by Forest Mims at Radio Shack, it's pretty popular so most who shop at radio shack have heard of it, and it's intended for beginning electronics, so after this, what could be kinda the next book you can read that...

Homework Statement Hi, One end of a metal wire (say, NiCr) of a given length and cross-sectional area is attached to an end of another NiCr wire of of a given length and cross-sectional area. If the free end of the longer wire (R1) is at a given electric potential, and the free end of the...

Hi guys This is not a question! I want to discuss something. Why can't cars be more mechanical than electronical? I mean every new day i see some electronic component being developed for cars and companies attract the fools who really don't know what really a car is (at least to it's...

Homework Statement (a) How many states does this system have? (b) How many rows will there be in a state transition table? (c) Provide the state transition table. (d) Draw a state diagram of the system. (e) Describe what the circuit does in words. Homework Equations The Attempt at a...