Quote:
Originally Posted by Kos-Mos
Really easy to make one.
But if you factor-in the time it takes to manually assemble the units, you better make runs of 100s at the time, and have the PCB acid-etched and isolated already.
Unless you want to make only one for yourself...
PCB-free has one very major flaw... no sinking capacity. I make some PCB-free units, but I add a piece of aluminium as wide and as thick as the FET I am using (Surface-mounted D2PAK), including the wire connections. That phisically protects the thing and helps sinking heat a lot.
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Thats a good idea actually. I never thought of adding an additional sink to the fet.
I think I'll build one and do a crap tonne of firing and hit it with a temp gun. see how warmt hey get with and without the heat sink.
I do not plan to mass produce these. as to many people have already covered that
I'm just looking for a cheaper alternative when I have more rifles and for my friends who arn't looking to sink a butt load of money into a mosfet.
Me building a 5 doller option over the 85 dollar TM is abig difference. that 80 can be dumped into a mech box etc.
I have a TM an dlove the little computer. but the main idea of a fet is to save your trigger contacts and for a slightly better response. Even on a standard non lipo battery. Thats hard to sell for 85 dollars. But at 5 dollars I can talk people into it.
Plus send some work my gun techs way. I'm still horrible at mechbox's. heh