Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [basic]

Fundamentals of electricity, electronics, components, or theory

571 questions
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Can a circuit be powered from Earth with a return ground on Mars?

Could you use a hot wire (120v 60 hz) from earth and a copper rod inserted into another extraterrestial body (mars) to complete a circuit? If impedance wasn't something to worry about (pretend Mars is only a mile away or something). I've asked this…
user2476549
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How can I learn electronics at home?

Possible Duplicate: Learning about electronics I am 40. I am an architect by profession. I am very interested in learning electronics. I don't have time to go to college for an electronics degree. What should I do to learn electronics at…
user6990
11
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7 answers

From zero to "almost pro": Newbie trying to learn. Good, quick resources?

I am a total zero in electronics. I just know what is a resistor and what is a capacitor. I also know what is a 555 just because I've been told what it does, 15 years ago. Apart from this and a bunch of other names, nothing more. However, I do have…
Stefano Borini
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Do capacitors waste power as heat or whatever on AC?

Capacitors store energy then give it back once required. A perfect capacitor is nearly lossless on DC power because you only fill it once then it keeps energy in it until you discharge it so no power loss to mention, but on AC the capacitors will be…
Islam Ghunym
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8 answers

What are analog and digital signals?

I came across the concept of analog and digital signals in my data communication course. We studied that analog signals are continuous signals and teacher presented a diagram like the sine wave and that digital signals are discrete; He showed a…
Zia ur Rahman
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How do you interpret/draw out the simplified circuits in Sedra's Microelectronics?

I legitimately do not understand how the simplified drawings in this book are meant to be interpreted. Coming from a basic circuit analysis class which had everything explicitly drawn, I'm having a lot of trouble even interpreting the simplest…
mokanul
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4 answers

Where can I find beginners electronics project schematics online, for free?

I have bought the following books in order to start learning basic electronics: Electronics All-In-One Desk Reference For Dummies Robot Building for Beginners (Technology in Action) My desire though, is for a good book that has a lot of projects…
Jacob Heckman
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What is the difference between wavelength and period?

Currently I have some problems with basic terms and need some help please. I'd like to know: What difference exists between wavelength and period ? When should I use the name wavelength and when period ?
Jorgos
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What is the difference between clock and pulse?

What is the difference between clock and pulse ? For example: Is the CLK-signal a pulse ? By the way, why do they invented the term frequence ? In my point of view, they could have said 20 times that period in a second?
Jorgos
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Basic nature of electric current/voltage

I'm curious about electronic/electric. I just want some visual, easy to understand explanation/depiction about basic nature of electric current/voltage, relations between them, why electrons make a light up, a batteries run gradually out and…
bnguyen82
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How is he not shocked?

I'm new to electronics, and I can't make sense of this video. At the 9:10 second mark, he holds a metal spoon across the ends of a wire that's carrying around 100 amps, and he's not harmed. Later the same setup produces over 400 amps, the spoon…
ACDC
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What's a good way to start learning how electronics and circuits work?

I literally already tried getting a degree in Electrical Engineering, and I hated it, and I switched to Computer Science. But here's the thing-- I find circuits and electronics and electrical devices FASCINATING! I just don't understand them. My…
temporary_user_name
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Is it safe to cut these wires?

My kid got a face mask with flashing eyes, but there's also some annoying sounds that comes with it. Is it totally safe to cut the white wires or could the awesome flashing lights stop working too (red and black wires)? Do we need to see the other…
tallberg
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Current Divider with dependent source

I'm currently studying electronics for the first time. The objetive of this exercise is to calculate the current I and the dissipated power in the dependent source. However, I'm having a hard time because I believe this circuit to be a current…
Luís Pires
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Starting point for a 10 year old

I am a EE and would like to get my 10 y.o. nephew familiar with the fun side of electrical projects. I'd like to start with basic principles and projects to re-enforce the basics. The goal is to build a repertoire of small projects…
gatorback
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