Quote:
Originally Posted by Naglfar
Now I don't know much about this application of MOSFETs, however, my electrical background would seriously advise you to research this particular use before doing anything.
Airsoft guns draw A LOT of current, and this project WILL backfire unless you know what you are doing. Don't think this is a quick fix.
No, I'm not bashing the MOSFET trigger, I plan to build one myself because I have the electrical knowledge to know what I am doing, but I still need to learn more about how people have used them in airsoft before I even think of starting the project.
|
What's going to kill a FET, especially a MOSFET, is going to be heat and/or cemf and/or inductive spike. Simply installing a $25 MOSFET without installing diode protection for that FET and without multiple FETs to share the load is a complete waste of time and money.
If you have experience in electronics, you'll know what I mean and be able to do it simply and effectively. Use no less that 2 FETs and your shunt can be placed on the same "board" as your FETs.
The way some have done it here with 1 FET and a few minutes of soldering is not the best way, that's for sure. Follow the design of a switch for a cordless drill. It does everything you could ever want for an AEG, including dynamic braking, and inductive spike shunt. The ones I've replaced in my drills have all had 2 FETs and they pass current in the same range as an AEG, but new ones for a Makita, Milwaukee, etc. can cost up to $150 each.