MOSFETs used in NanoDragon ESC

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    • April 18, 2006 at 10:15 am #9754
      Avatar photoAaron
      Keymaster
      • Posts: 2146

      The NanoDragon ESC is a combined Reciever and ESC unit that outputs a channel to a “regular” Futaba type servo for steering.

      The ESC utilises 4 TO-220 packaged N-channel MOSFETs for drive. Namely IRF3803 units.

      At 4.5v these have a resistance of about 0.009 ohms dropping to 0.006ohms with a 10V drive.

      As yet I have not measured the drive voltage son the PCB in operation.

      Now the hunt is on for a more efficient replacement and maybe something else for a special project.

      It would appear that the IRF3713 is a drop in which will halve the resistance which is huge!

      Datasheets are attached

      A.

      • This topic was modified 9 years, 9 months ago by Avatar photoAaron.

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      Site Owner Guy.

    • April 19, 2006 at 1:23 am #30463
      ph2t
      Participant
      • Posts: 2088

      0.009 is a pretty good value to start off with man, can you take some DMM measurements on the gate pin to see what the mosfets are being drivin at?

    • April 19, 2006 at 2:05 am #30464
      Avatar photoAaron
      Keymaster
      • Posts: 2146

      Yeah that’s my next plan 😉 Gotta get myself some new clip-on leads for the DMMs – lost them a while back…

      By the weekend I’d be thinking I’ll have the measurements…

      A.

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      Site Owner Guy.

    • May 17, 2006 at 10:09 pm #29834
      Avatar photoAaron
      Keymaster
      • Posts: 2146

      OK hasn’t happened so fast…. 🙂

      On the list of things to do…

      A.

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      Site Owner Guy.

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