Recent content by a-tom-ic

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    Graduate Is there a e-ray refraction theory?

    An a bit unkind response to someone trying to help you, don't you think? (Not judging the correctness of either of the responses)
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    Kindle e-reader and scientific papers

    You might consider some other devices too, which are 9.7": - Pocketbook 902/903/912 - Onyx Boox M92 im thinking about using them for PDFs but have not decided which one is the better of the two. (Not only in terms of hardwarefeatures but also in terms of support, firmware update policy...
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    Mathematica How to define local variables and constants in mathematica

    You might want to clear the globals at the beginning of your notebook (only works if you process the notebook as a whole): http://reference.wolfram.com/mathematica/howto/ClearMyDefinitions.html Another option could be to use local variables...
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    MATLAB Create Dynamic Legend in MatLab

    I'm not that sure that i understood what you wanted, however this thread came into my mind: https://www.physicsforums.com/showpost.php?p=3292100&postcount=4
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    Graduate How to Derive the Equation for an RLC Circuit?

    Hi Ai En, as a solution you could use the voltage divider formula to get a first equation: \frac{V_{out}}{V_{in}} = \frac{R_L}{R_L + j \omega L + \frac{1}{j \omega C}} afterwards if you think that's useful you can try to manipulate this formula until you get the one given to you. Since i...
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    Graduate How to Derive the Equation for an RLC Circuit?

    - Show us the picture of the RLC Circuit your using. - Tell us how Vout is defined. - Tell us what [omega][/2] stands for (use the boards LaTeX syntax).
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    How do I remove the blue box around axis labels in SciDAVis?

    Probably you should try the Help & Tipps forum of SciDavis itself: http://sourceforge.net/projects/scidavis/forums/forum/708156
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    Software to plot high quality figures

    Inkscape is free too and does the same as coreldraw and illustrator
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    Software to plot high quality figures

    So which of the programs mentioned do you use now?
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    Basic electronics problem with an amplification factor for a transistor

    Im sorry feme that i might complain now, but I am a bit worried that you do not read what we write? My last picture in attachment.
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    Software to plot high quality figures

    You could as well use: TikZ - Examples: http://www.texample.net/tikz/examples/tag/3d/ However that is not a drawing program :). If drawing is more your interest: 2D-Vectordrawing: CorelDraw, Inkscape, Illustrator ( I am pretty sure you could draw the simple 3d-picture of the paper you...
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    Basic electronics problem with an amplification factor for a transistor

    Both KVLs are correct, use them! (However you will not need the one for the output for the transistor. Only if you want to calculate Vce too it will be useful.)
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    Basic electronics problem with an amplification factor for a transistor

    You ignored that there is a voltage drop between the collector and emitter pin of the transistor (you called that "Vce"). Vce is missing in your KVL equation in the last picture. Therefore your solution is wrong. Since i assume you have your bias current calculated already, why not just use...
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    Basic electronics problem with an amplification factor for a transistor

    The thing is, engineers are a) lazy, b) do not want to clutter their schematic drawing. Therefore the arrow is the equivalent to a voltage source. See attached picture part 1! Part 2 is the same circuit explicitly redrawn with the voltage sources, so it should be more clear that there are...
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    Basic electronics problem with an amplification factor for a transistor

    See attached picture. The value 100 was an example for the current amplification factor B or beta however you call it. It was just an example. In YOUR case you used 60. Im out now. Other questions for other people or when I am back =P