MOSFETs used in NanoDragon ESC

Home Forums 1/8, 1/10, 1/12, 1/18 – Discussion MOSFETs used in NanoDragon ESC

Viewing 3 reply threads
  • Author
    Posts
    • #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 8 years, 10 months ago by Avatar photoAaron.

      --
      Site Owner Guy.

    • #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?

    • #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.

      --
      Site Owner Guy.

    • #29834
      Avatar photoAaron
      Keymaster
      • Posts: 2146

      OK hasn’t happened so fast…. 🙂

      On the list of things to do…

      A.

      --
      Site Owner Guy.

Viewing 3 reply threads
  • You must be logged in to reply to this topic.