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rc helicopter motor

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rc helicopter motor Customers Reviews

  • Great ESC for airplane and mybe cars

    posted by danithebest91

    low price and high power with a good heatsink:75A continuous, drop at 50A at 100°C the cooling in fly is enough to void this , the internal resistence is low because use all n-channel fet P75N02LDG.Fast response during fly.
    recomanded for 500 watt brushless motor
    it is a good choice if you are beginner, good compromise between performance and price
  • Must have replace part!

    posted by cfilho

    - Just like the original ones;- The wires are just as long as the original ones;- The end of the wires are ready to be soldered to the board;- Nice Price.
    My tail motor broke after my V911 crashed. I've decided to buy tow pairs of motors just in case. I'm satisfied with the price and the quality.It's highly recommended the help of someone used to work on board soldering to install the new motors.
    Buy it! If you have a V911 Helicopter, you'll need it sooner or latter. [hehehe]
  • Nice

    posted by Oznog

    Two 35v 470uF electrolytic input caps
    5v reg TA7805F, max Vin 35v
    Atmel ATMEGA 8L
    LT1262, a 5v-to-12v charge pump, presumably to make 12v for gate drive
    Three IR2101S gate drivers. Uses floating high sides, the high side can go up to 600v.
    12x output transistors, 2x per half-bridge:
    In mine, 11x are FDD6688 (30v Vds, 84A, 5mOhmn @
    10V Vgs) and oddly enough ONE FDD8896 (30v Vds, 94A, 5.7milliohm Rds-on @ 10v)
    Cheap controllers often don't use gate driver chips. So this is pretty decent.
    The 5V reg is not well heatsinked. If operated with a high input voltage, if you draw a lot of current out of the BEC you can easily overheat the 5v reg. True in most of these.
    Absolute max voltage is 30V here, limiting factor is the transistor Vds-max.
    It sounds like it CAN go up to 6lipo (4.2v*6=25.2v). Just barely, but it can. Should be able to work on a 24V sealed-lead-acid battery too, but that could be 28.8V while charging, very risky. If the ESC isn't turned on until it's taken off the charger and left to rest a minute, it'll be FINE.
    Oddly enough, when both sides of the H-bridge are off, the transistor voltage breakdown rating is up to 60v, in which case the 35v rating of the caps and voltage reg are the limiting factors.
    I've never actually turned it on. This is an Aspie Tech Review.


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