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Recent content by MarcusFunt

  1. M

    High voltage PSU Mosfet choice

    A standard tesla coil's output current is way too low for what I need. combine that with 30 times too high frequency (for the one you linked) and an efficiency of less than 8 percent. I am not able to use an air-core transformer/tesla coil. The section bobbin approach is the best one for me...
  2. M

    High voltage PSU Mosfet choice

    My input voltage will be 12vdc from a commercial smps. but the voltage across the MOSFET is dependent on the resonant circuit formed by the primary coil and resonant capacitor. the resonant voltages and current are calculated by LTSPICE: 17A peak. 42vac peak. I will at max be drawing a few...
  3. M

    High voltage PSU Mosfet choice

    Hi Klaus. Thank you for your swift reply. I am very new to this website, therefore I couldn't figure out how to attach the picture. it should however be attached to this post. I am switching the FET at 70khz, so I need a relatively low gate capacitance, but more importantly, my RDS needs to be...
  4. M

    High voltage PSU Mosfet choice

    Hi! I am building a device for a national competition ("Unge forskere") That should be able to sterilize hands with nothing but electricity. For this project, I need a High-Voltage power supply, capable of delivering 12(or so)kV at 30-100khz. Therefore my head automatically went to the very...

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