Mosfet project - Status update 2018 Sep By: AirsoftTech.Dk

[@sephilion7229]

Nice job, it looks great improvements on the way. May be the soldering temperature is the problem in the first failed attempts. Those mosfets are easy the blow up. And also can you explain why don't you have TVS diode in your circuit. Again nice job.

[@AirsofttechDk]

Some of the failed attempts may be soldering temperature, but I have tried using many different approaches (including reflow, temperature controled heat guns, and just the simple "don't heat to much and quickly cool down after") so I know that there is still issues with the design :-/ .... As for the TVS , Most modern mosfet's has TVS imbedded, so it's simply not needed ... Using an external one just takes some of the heat away from the mosfet (With the added rick of it breaking instead) ... So I would like to exclude it if at all possible .. (It just requires that one checks that the internal one is good enough)

[@ichamachtir7609]

Hi, did you progress on your project? What is the ref of the small mosfet? Maybe it can not be drived by small tension? On other videos I have see, he use more thicker copper on the PCB. And for some mosfet packages require holes hinder the mosfet and heatsinks in the opposite side of the PCB. On a old video you make a tutorial for a web PCB design tool's. The tool seems to be obsolete. What are you using now for PCB design?

[@HuheJass]

The new king arms m1928 includes a small inline mosfet- do you think the stock one is good enough or would you upgrade it to something better? It also comes with deans connection for the battery but has tamiya plugs from the stock to motor that I plan on changing out to deans

[@AirsofttechDk]

The stock one is good enough for m100-m120 springs .. if you go any higher, or if you plan on switching motor for higer ROF then you realy should switch out the mosfet to ...