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Recent content by joao_lima

  1. J

    LT Spice number of sample points

    Hello, Is it possible to change the number of sample points simulated to create a curve in LT Spice? If yes how can I do it? Greetings, joao_lima
  2. J

    LT Spice controlled sources

    Hello, I would like to know how is the relation between the voltage and the current in a voltage controlled current source. In my case I have a gain of 1 does that means that for 1 Volt I will have 1 Amper? If not which is the relation between the two of them? Regards
  3. J

    [SOLVED] Faraday's law and RC circuits

    I can't understand mathematically how the capacitor voltage is approximately proportional to he RC input voltage integral, can you clarify that for me? Regards, João
  4. J

    [SOLVED] Faraday's law and RC circuits

    Hey, I am trying to understand an statement made in another post but thought it would be better to start a new thread. In accordance to Faraday's law is stated that the magnetic flux in a transformers core is proportional to the integral of the applied voltage in the inputs of the transformer...
  5. J

    LT Spice capacitor value

    Hello, I am analyzing a circuit in LT Spice and there is one capacitor with the following value "Capacitance = {VSEC/500} IC = {IVSEC/VSEC*500}". I provide the values for IVSEC and VSEC, but I don't get this IC. I tried consider this as a constant and solve the problem for IC but when I put the...
  6. J

    How to measure the leakage inductance in a transformer?

    The number of winding is important because I am modeling it in a LT Spice environment and a few of the parameters require the number of windings in the high voltage side. I would consider a bad use of the instrument by myself, I am trying to get to a reliable way to make the measurement, again...
  7. J

    How to measure the leakage inductance in a transformer?

    Do you have a reliable way to measure the winding without opening the transformer? Also can you suggest a way to measure the leakage using the PM6304? Thank you Regards joao_lima
  8. J

    How to measure the leakage inductance in a transformer?

    Hello The Electrician, I am working with a 4.5 VA transformer 230/18 V, with a rated current of 19.57 mA in the primary and 250 mA in the secondary. I have stipulated the number of winding of 9598 based on the resistance measured using a DC sign of a LCRmeter. With the resistance value I...
  9. J

    How to measure the leakage inductance in a transformer?

    Hello, I am trying to measure the leakage inductance in each winding of a monophasic transformer. I tried to measure it at the same frequency that the transformer operate, 50 Hz, but the value keeps changing very fast. Does anyone have a suggestion to measure this value? Regards, joao_lima

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