Recent content by Phellippe Marques

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    Single Line Diagram - Power Systems

    Hey everybody, Its recurrent in Power System Analysis and Electrical Instalations the SL diagram. I need recommendations of books in which I can read about it. I've done a little research but couldn't find anything. Thats amusing, in which classes are this diagram teached for the first time...
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    Make a Monophase AC Motor Run: 3 Speeds Fan w/ Digital Logic

    Hey, Thanks for your reply. I don't have any experience with motors, I just have an idea about how it works, I've already done Electrical Machinery 1 and 2. But I really don't know how to make it start from speed 0. I opened the stator and I guess its an monophase induction motor because the...
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    Make a Monophase AC Motor Run: 3 Speeds Fan w/ Digital Logic

    Hey, everyone, I got this motor from my fan, I am trying to run it but there are a few more wires that I was expecting. Can someone please give me some light? What are all those wires and how to make ir run. PS: 3 speeds fan w/ digital logic on the top (taken off)
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    Capacitance of two unequal spheres

    If you have the charge stored in the spheres you can find and vectorial equation for the electric field, right? With this equation you can use numerical methods to evaluate the integral of electrical field through the line which is the smallest path between the spheres (a line) and evaluate the...
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    How can I calculate dilectric constant from conductivity

    Why can't I see the equations, only what I presume to be the code for equations?
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    Real Scientists Discuss Benefits of Science Documentaries

    What real scientists think about science documentaries. Its pretty obvious that one can't learn science from them. So you could be wasting your time studying real science instead of watching pointless documentaries. On the other hand they are pretty interesting and can be the spark one need to...
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    Collection of Science Jokes P2

    How about silicium?
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    Exploring Tesla's Autos & Induction Motors

    Guys, I understood both the Dc-Ac conversion process in order to feed the 3phases induction motor, and the idea of controling the parameters to keep the output torque constant. I thank you all for the attention and help. Its enough for me, for me, the topic may now be closed
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    Exploring Tesla's Autos & Induction Motors

    Thats enlighting for the power supply question. How about the constant torque?
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    Exploring Tesla's Autos & Induction Motors

    As a EE student, I studied Induction motors: three and single phase. I saw somewhere that Tesla's autos are using induction motors feeded by batteries. But I've never heard about DC induction motors.. I also heard that Tesla autos have torque constant for every speed, but that's also not how...
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    2n3904/2n3906 driving mosfet gate

    Just curiosity, I am starting to study electronics, I understand the push-pull circuit, but I can't find out the purpose of this circuit, why the transformer and the mosfet? What does this circuit do?
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    A block diagram reduction [sign error]

    I am really not aware of the movement you did from the first to the second pic, moving the feedback. To solve this problem first I would move G1 to the right, we would have G1G2 and G1H1. Then I would use the feedback formula to H1 and the unit. Then I would make the parallel formula with the...
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    Differences Between Radios & Antennas for CCNA

    Thanks for your answers, dude
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    Differences Between Radios & Antennas for CCNA

    What would be a better word for replacing "catch"? English is not my mother language.
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    Differences Between Radios & Antennas for CCNA

    Is it possible to catch 2 different signals with one single antenna and then decompose them using a Fourier transformation? Also didnt take "telekom" in my grad yet
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