I have recently gotten in the habit of taking off electronic components from motherboards, circuit boards, etc. and I want to know what the capacitance is of the capacitors I take off.

Any help?

Hai, I am Jagan.I have completed my engineering in the field of Electronics and Communication Engineering.But i have been scheduled to work in the area of soldering the circuits,design and assembling of electronic components in my company.I think that you would have understood.I am scared that in what way that task would match my engineering study and does the job has enough scope to improve? Please guide me…..

Im newbie with electronic components but is there like a timer component for an electric circuit which like you can control how long current is allowed to flow?

I know that the inside of the cube is mostly hollow, and I began to wonder if it was possible to stuff electronic components or wires in there. What I want to know is if there is a way to have the completed state of the cube complete an internal circuit that could trigger an outside action such as turning on a light, either through a transmitter or wired to the cube itself.

I’ve thought about lining the inner sides of the pieces with a thin metal sheet that basically makes a complete current only in the solved state, but I’m not sure how to do it or how practical it would be. And then there’s also the issue of how to trigger that outside action once solved, whether it be through wires running from the cube itself or some form of wireless communication. And finally this has to all fit inside the cube.

My question is: How should I go about doing this, or is this an impossible task without major modification to the cube or a custom built cube? Suggestions?
I just realized that aluminum foil makes a great conduit for the internal wiring system. It’s flat, cheap, and conducts.

Hi,

I’m building a simple circuit with two 4000 series logic ICs, an LDR and a buzzer amongst a couple of other things.

I’m not sure what type of capacitors to buy to go in it.
I need a 0.001 mf, a 10mf, and a 100mf capacitor but am not sure what type.

Please could you provide a link from this site:

http://www.rapidonline.com/Electronic-Components/Capacitors

of the type of capacitor I should buy. I am thinking electrolytic?

Thank you very much.

Froskoy.

Has anyone ever thought, experimentally, about trying to use compound spirals, maybe even with different materials, or semiconductor styles, in different parts, and other compound shapes, and materials for electronic components?
Example: On the surface of circuit board, etch a twin spiral, with two conductors running parallel to each other as they spiral toward the center, with a solder hole at each ones’ ends so they could be connected to make parallel induction coils, with or without a center connection and with or without a center tap, at the same time (with who knows, what types, or how many possible uses), or left separate to make a capacitor, or used as two parallel inductors.
Or make a coiled wire and then, coil the coiled wire, or wind the coiled, coiled wire again, around a core, or center tap, or any other arrangement(s) – basically letting the mind keep wondering, and keep testing and calculating…..
Want more?
Have they ever tried regular material induction cores, with open ends, or closed at one, or at both ends, even tapped in different ways etc, spiraled Inside of differently shaped (circular, triangular, etc…), solid molded plastic, or other materials, etc, etc, etc…..?
These shape ponderings might lead to some wiled stuff!!!
Since there will always be new things!
Thanks for thinking/pondering with me!

Maybe even with different materials, or semiconductor styles, in different parts, and other compound shapes, and materials for electronic components?
Example: On the surface of circuit board, etch a twin spiral, with two conductors running parallel to each other as they spiral toward the center, with a solder hole at its’ end, or at a location in it, so they could be connected to make parallel induction coils, with or without an inner end connection and with or without a center tap, at the same time (with who knows, what types, or how many possible uses), or left separate to make a capacitor, or used as two parallel inductors, which would probably work and behave like a tank circuit, and could be adjusted by how the lines are spaced, and by how many time each is wound, or maybe even a type of antenna, or set of antennas.

Or make a coiled wire, and then, coil the coiled wire, or wind the coiled, coiled wire again, around a core, or center tap, another wire, or any other arrangement(s) – basically letting the mind keep wondering, and keep testing and calculating…..

Want more?
Have they ever tried standard material and/or other material, induction cores, made with open ends, closed at one, or at both, tapped in different ways, spiraled in different shapes (circular, triangular, etc…), or coated with molded plastic, at different thicknesses, etc, etc….?
Since there will always be new things, these shape ponderings might lead to some wiled stuff!!!

To me, learning from a book is basically memorizing what is already known, but real learning happens when your imagination kicks-in!

Thanks for thinking/pondering with me, and I hope it gets and keeps you wondering too!!!

Maybe even with different materials, or semiconductor styles, in different parts, and other compound shapes, and materials for electronic components?
Example: On the surface of circuit board, etch a twin spiral, with two conductors running parallel to each other as they spiral toward the center, with a solder hole at its’ end, or at a location in it, so they could be connected to make parallel induction coils, with or without an inner end connection and with or without a center tap, at the same time (with who knows, what types, or how many possible uses), or left separate to make a capacitor, or used as two parallel inductors, which would probably work and behave like a tank circuit, and could be adjusted by how the lines are spaced, and by how many time each is wound, or maybe even a type of antenna, or set of antennas.

Or make a coiled wire, and then, coil the coiled wire, or wind the coiled, coiled wire again, around a core, or center tap, another wire, or any other arrangement(s) – basically letting the mind keep wondering, and keep testing and calculating…..

Want more?
Have they ever tried standard material and/or other material, induction cores, made with open ends, closed at one, or at both, tapped in different ways, spiraled in different shapes (circular, triangular, etc…), or coated with molded plastic, at different thicknesses, etc, etc….?
Since there will always be new things, these shape ponderings might lead to some wiled stuff!!!

To me, learning from a book is basically memorizing what is already known, but real learning happens when your imagination kicks-in!

Thanks for thinking/pondering with me, and I hope it gets and keeps you wondering too!!!

I’m learning programming for the first time (starting with C for beginner) but I first I want to understand exactly what happens when I type the key, let’s say "b" on my keyboard and seeing letter "b" appear on a notepad for instance.

My guess is this and I’m not sure to what extent it is correct:

First, a computer is, physically speaking, nothing but electricity and circuitry (matter; electronic components such as resistors, capacitors etc and electrical power which comes from the battery/wall and finally the way all these are connected to one another)

1. The keyboard, being an electronic device, needs electricity in order to work so it is powered by the computer through the USB port.

2. By pressing any key ("be" in our case), I’m actually closing a circuit which makes some current/voltage flow (high for 1 and low for 0)

3. Some programs (Operating system which then communicates to notepad God knows how) convert this series of high’s and low’s or 0’s and 1’s into what I see on my screen as letter "b" on the notepad.

Am I close to the reality of computing?

I mean how does the computer know that I have actually pressed the key "b" on the keyboard and not "a", does every key send some sort of special current or something? This part I need clarifying the most!

Does this have anything to do with "Hex"?

Thank you.
where does the processor come into play in all of this? my processor is 2 GHz, what does this mean in terms of typing and seeing something on the screen?

Maybe even with different materials, or semiconductor styles, in different parts, and other compound shapes, and materials for electronic components?
Example: On the surface of circuit board, etch a twin spiral, with two conductors running parallel to each other as they spiral toward the center, with a solder hole at each ones’ ends so they could be connected to make parallel induction coils, with or without a center connection and with or without a center tap, at the same time (with who knows, what types, or how many possible uses), or left separate to make a capacitor, or used as two parallel inductors.
Or make a coiled wire and then, coil the coiled wire, or wind the coiled, coiled wire again, around a core, or center tap, or any other arrangement(s) – basically letting the mind keep wondering, and keep testing and calculating…..
Want more?
Have they ever tried regular material induction cores, with open ends, or closed at one, or at both ends, even tapped in different ways etc, spiraled Inside of differently shaped (circular, triangular, etc…), solid molded plastic, or other materials, etc, etc, etc…..?
These shape ponderings might lead to some wiled stuff!!!
Since there will always be new things!
Thanks for thinking/pondering with me!