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Hi
I know the Big Nipper have used this to great effecton their robots but I am having a few difficulties on comming up with a design. Having talked to Paul at Technobots he confirmed that they are Plastic fets so they dont need to be insulated. So my Idea was simply to bolt a piece of aluminium, the correct thickness between the two rows of fets and then attach a PC heat sink to the top of that.
Has anyone any other ideas?
Regards
Ian
could you solder 1 row of fets to the bottem side of the circuit board? That would give you enough space to place 2 nice heatsinks.
We cut the PC heatsink in half and took a few fins off, thinned the heatsink base until it fit inbetween the fets and drilled 4 holes in it. Used 2 strips of ally each with 4 holes (just as washers really) and bolted them either side of the fets to squash the fets to the heatsink with lots of heatsink paste inbetween and bolted them on.
Dont surpose anyone took pictures of this at Magna?
Mark
If no pictures come forward would you consider taking one?
Regards
Ian
Got plenty of time this weekend as Ive nothing planned anymore, so will do.
Thanks Very Much mark, Much appreciated.
Regards
Ian
Ian, look at my profile. Hope this helps
Looks good.
Any idea how many amps it can safely handle now? Does the device current limit to a preset level or switch off if it overheats? I cant see either mentioned on its datasheet.
Thanks
Mark
Thanks Mark.
My only slight problem is my Pc Heat sink is has alot tinner of a base. I suppose I will have to look for one.
Thanks
Regards
Ian
The pic on Marks profile has a green automotive fuse in the holder ... this is I believe 30 Amps.