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Registered Member #1153
Joined: Mon Dec 03 2007, 07:27PM
Location: Croatia
Posts: 213
Tom540 wrote ...
yeah you have a point. but hes tested it for hours according to his site. He should test to see if that fan is really needed if not would probably cut a lot of cost out. his heat sinks look like they are cut from a bigger heat sink.
I think you are little right and wrong here. Yes his heat sinks are just chopped big heat sink or made from simple aluminum U profile for construction (more likely).
At least at me, fan cost 5 Eur and good heat sink to mount 4 IGBT-s will coste more than 100 Eur. So by using small cheap heat sinks and fan he can save alot of money, and this is where he is going too i think
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
I just meant at a low bps he should be able to ditch the fan and keep the same heat sinks. My first solid state coil which was around 2kw ran cold and ran at the same bps as his does. The sinks I use on my DRSSTC are 20 watt heat sinks and it runs at a near 300bps. They don't get warm.
Registered Member #1153
Joined: Mon Dec 03 2007, 07:27PM
Location: Croatia
Posts: 213
Mates wrote ...
100Eu heat sink? Maybe made of pure silver But fans are cheap - you are right in this
Remember we dont have here ebay and such great institutions :)
Our electronic supplies are terrible and almost none, prices are at sky and as desert more than half of transistors, mosfets, resistors... is fake
Back on topic
Tom540 wrote ...
I just meant at a low bps he should be able to ditch the fan and keep the same heat sinks. My first solid state coil which was around 2kw ran cold and ran at the same bps as his does. The sinks I use on my DRSSTC are 20 watt heat sinks and it runs at a near 300bps. They don't get warm.
Maybe its simply insurance, and maybe simply he has some mistake why they overheat mod edit: no double posting ¬.¬
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What is he using?
But fans are cheap - you are right in this
