The fan sensor of the 8010 is utter rubbish like most inverter fans. They are just a bang bang thing. I would not use them for cooling purposes, any more than using the native ones on most inverters I have been familiar with. They all come on too late, and they all run too fast when they don't need to.
If you want your bulk caps to survive, you want to keep them in the <40c range.. so you want them as cool as possible.... eg a good capacitor will get 2000hours from a 105C environment, but will get 30 years at 35c. With a sensible fan driver system, this is very possible in my area, and 45 is possible in most areas. This is assuming 2-4kw continuous. You simply cannot do that with bang bang junk.... so use the temp pins at your peril. They do very good soft starts.
They are used by me only as a catch all in case the external power supply or the fan itself fail, and they will then shut the unit down before it cooks. There are two sockets, only so that you can monitor the heat sink for shut down, ... ie if things get up into the 60c range... then shut down, else leave it to the dedicated fan circuits to control things. he second is a legacy from using it as a shut down point.
It happened recently that a 10 amp buck converter that I use for the fan power, did fail. The TFB caught it for me.... so it does what it is supposed to do.... catch the faults.
The 100r is purely a 0r resistor plus a 100 ohms... is it was for a single sided board, and I left it there.. legacy.... look at the board to see why.... it was not for noise, but just for the hell of it.
Ok.......now we have a circuit, everyone will want to change things a bit.
There have been a lot of these things built now, and another 3000 in Africa as well apparently, and I can guarantee that if they use those circuit boards, and that layout, they will work just like mine.
I can also point to the backshed, (
http://www.thebackshed.com/forum/forum_posts.asp?TID=8542&PN=1&TPN=1 )where smarter people than me have done the circuits, and then gone freestyle... only to find a year and a half later, that they have blown hundreds of fets, and finally come back to the same design as I use..... and people like Clockman use the same design, and have perfect success with units even bigger than mine...... there is a warning in there.
I might not know what I'm doing, and I maybe the village idiot, but mine work perfectly... ** as they are **....... I was just lucky I guess.
It is heart breaking to see the work some folks put into these things, only to see it blow to bits every time they try it out....
It is simple. If you want it to work perfectly well out of the box, then... copy mine exactly.... then experiment, as you will have a reference to work against.
You will build more than one, as they work so darn well, you will want to make a bigger one or a spare...... but one never seems enough....... now experiment with it. At least you will have one that works properly if the cunning changes you make don't work as advertised.
.............oztules