Recent content by Xavier Pacheco

  1. Xavier Pacheco

    How to match this gate driver to this mosfet?

    Thank you. I will change to the 2EDN driver which has two drivers instead of one. Of course I will just use one, the other will be useless. The reason is because the 1EDN drivers are not available. Seems like they are out of production. I mean, according to the datasheet, the 1EDN has two...
  2. Xavier Pacheco

    How to match this gate driver to this mosfet?

    Hi, I've selected this MOSFET for a motor control application [picture attached]: IRF200P222 Datasheet: https://goo.gl/nt9Nou I'm going to use low side configuration. I've chosen the 1EDN751x gate driver which has two possible ways of using it. I attach them. What is the best way to use it...
  3. Xavier Pacheco

    Typical Application Connection IRAMX20UP60A

    Hello, Looking into the datasheet of the IRAMX20UP60A, I found a typical application connection which I am trying to understand. I attach a picture of the application circuit. The part inside the black square is what I don't understand. As far as I understand, if a low signal goes into the base...
  4. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    I am sorry. My intention was not to confuse any of you. I am not an expert in the topic, that is why I appreciate your effort to give me a hint. Now, let me try to explain to you the problem again. I have an alternator, which I have attached some information above. I want to control the...
  5. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    What do you mean by "I assume you are increasing the voltage out into a fixed load in order to increase the effort needed to turn it"? Sorry, but I am still confused. Do I need to include the resistor load shown in the picture attached below? The alternator output voltage is Ok for supplying...
  6. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    Thank you. I think you got the point. I have attached additional pictures about what I have. This is the point: That's a fitness bike system which has a display and an alternator control board. The display has many functions. Imagine you just have the alternator, and you want to control its...
  7. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    I have attached the alternator that I have. I just need to control its magnetic field strength, that is why I thought of PWM.
  8. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    So, do I just need to build a normal PWM and supply it with the "B" Terminal (Output voltage) of the Alternator?
  9. Xavier Pacheco

    How to control the field current of an alternator by using PWM?

    Hello, How can I use a PWM to control the field current of an alternator? That is, a regulator to vary the strength of the magnetic field?
  10. Xavier Pacheco

    Variable Frequency Op-Amp Astable

    So if assemble the exact circuit as shown and I use a trimmer instead of common potentiometer, would I have a reasonable range of frequency?
  11. Xavier Pacheco

    Variable Frequency Op-Amp Astable

    I am trying to design an oscillator which ranges from a very low value (near 0) to 2kHz. I found an useful lead which I attach below. However, I am not familiar enough with this circuit so I am not sure about how to calculate and modify the range of this circuit. I would appreciate any leads...
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