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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by marcosmelchiori

  1. M

    voltage amplifier

    Here goes something. If I were you I´d go for the swtching step up regulator, for a more professional solution. Any way, if you are itented to make a cheap, home made solution this could be good for you. It´s a 555 used in astable oeration followed by a rectifier that will produce -Vp. That´s...
  2. M

    voltage amplifier

    Not really The pulsating output would depend on the load. In fact, depending on the capacitor values and the load to be feed, the output would be DC. If it doesn´t work, mail-me for another solution.
  3. M

    Voltage regulator

    thanks I´de like to thank everybody for the help and say that I´m still willing to know if there is any regulator with a bit more than 60V. Here goes some answers for your questions: - The source for this high voltage is a generator moved by gasoline. I´ve thought about reducing the relation...
  4. M

    Voltage regulator

    I forgot to ad that a switching device will do. The currente should be abou 4A.
  5. M

    Voltage regulator

    Does anyone know about a voltage regulator with these characteristics: Vin >= 60V Vout >= 16V? Thanks.
  6. M

    Help on brushless motor control

    Thanks I´d like to thank for the interest you´ve decicated do far. About the 3 phase term, I believe it´s the most widely used term, even though it might seem incorect. It describes a brushless motor wich has three DC inputs, that´s all. About the motor ratings, here it goes: Kv = 839...
  7. M

    Help on brushless motor control

    I´m intented to use a FET brigde to control a 3 fase DC brushless, sensorless motor. The project must prevent violent load variation on the motor shaft. I´m in a big doubt. What in fact these variations may cause? If my load is suddenly decreased or increased, may any FET be harmmed? I will...

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