AEG mosfet circuit help

Discussion in 'Power Electronics' started by Vuki13, May 26, 2018.

  1. Vuki13

    Thread Starter New Member

    May 26, 2018
    Hello everyone, I am new to the forum and this is my first post.
    I am planning to make a basic mosfet to switch my aeg ( automatic electric gun ) for airsoft. Currently I am using 7.4V li-po battery and with time I will switch to 11.1V li-po battery and I expect around 60-70A peaks and maybe 30-40A constant current draw.
    I bought 10 50n06 n channel smd mosfets and I am planning to use 3 in parallel on a pcb to make the design bulletproof.
    Since I am not much of an expert on this field, I can you help me with choosing the right gate resistor and gate to source resistor?
  2. danadak

    Distinguished Member

    Mar 10, 2018
    Post your current schematic.

    Regards, Dana.
    Last edited: May 26, 2018
  3. avayan


    Oct 30, 2015
    With such a simple system, there is not a whole lot to worry about. If you had to worry about dead time, then the gate resistor would be crucial. But if it is a single low side switch (even when there are three in parallel), any 5 to 30 ohm resistor per gate should do the trick nicely. The pull down resistor is even simpler in nature. 10K is what I would start with. Good luck!