Welcome Again! In this post, we will discuss the main part of the whole Quadcopter/Multirotors system. Here we will learn about Repair burnt ESC with these easy steps | Electronic Speed Controller Repair. Before knowing about Repair burnt ESC with these easy steps you must know the basics of Quadcopters or UAV or Multirotors. As we are discussing Repair burnt ESC with these easy steps | Electronic Speed Controller Repair so we must know about the system on which we want to implement it.
Repair burnt ESC with these easy steps
As we had discussed in our previous post the reason behind what the ESC get burns or is damaged. You can also get to know more about the reason behind the ESC burns. As during any Research and Development i.e R&D any damage to any component especially components of Multicopters which we know are very expensive proves to be much costlier for our R&D. So it is required to take the precaution during R&D or also if any damage happens, we can try to repair it. Same is for ESC i.e. Electronic Speed Controller, we can also repair the burnt ESC.
Before this, you must know about What is ESC? How ESC Works? Electronic Speed Controller
ESC i.e. Electronic Speed Controller consists of an array of MOSFET having NMOS all Half H-Bridge. The ESC are mostly burnt due to the improper connections like when the connections are made in reverse polarity. So we should remember to use the sockets so as to prevent such damages.
Electronic Speed Controller Repair
ESCs consists of MOSFET, Transistors, Resistance. Back to the point, assuming you know what is MOSFET, the transistor is LR7843 N-Channel MOSFET, with 3.3 m Ohm on-resistance (Rds-on) as shown in the datasheet. Simply speaking, MOSFET is a transistor just like BJTs but is voltage controlled. Well, considering power loss, if my outrunner draws 30A continuously, the power loss as heat for each MOSFET will be (30*30)*0.0033=2.97Watt, so 6 MOSFET will dissipate 17.82W of heat for a continuous 30A draw, which is awful for such a small heat sink in my project. So there are 2 options to overcome such problem, either using a larger heat sink or use MOSFETs with lower turn-on resistance.
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