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Registered Member #191
Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
Finn Hammer wrote ...
Electroholic wrote ...
I believe he is using the IGBT substrate as part of the waterblock by having it sit directly on top of the water channels, with the perimeter sealed by an o-ring. No more wasting delta T on thermal junctions, just cold water on the back of the IGBT.
Edit: I knew I've seen it somewhere
Jack, that´s close enough, just wondering now, how to deliver the cookie.
The word we wanted to hear is baffle. It is a baffle. This baffle is embedded in an alluminum plate which forms the basis of the manifold. The water enters the big rectangular holes on one side and have to pass the maze channels to exit the row of holes on the other side of the block. The maze shape adds 2 features: first it creates resistance to the flow of the water, series resistance makes the flow equal in each channel. It also forces turbulence to the flow, facilitating heat transfer to the liquid. Third: The plastic insulates radiated heat from reaching cooling backplate made from alluminium.
Cheers, The Midget coilers of Denmark
Aww, I think I'm starting to see the genius behind this design now. Running multiple parallel channels across the width of the device to minimize thermal gradient across the device. And you added baffles to equalize flow rate in different channels and create turbulence. Not sure if I understand your 3rd point, tho, about the radiated heat.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Gatedbreakdown wrote ...
Is that a spool of litz wire, kilovolt?
nope, it's a standard magnet wire but with thin cotton insulation on the outside I got it for (almost) free so thats what I'm going to wind my secondary with. It may be too thin on the inside (ca. 0.35 mm) and get too hot, but we'll see
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I got it for (almost) free so thats what I'm going to wind my secondary with. It may be too thin on the inside (ca. 0.35 mm) and get too hot, but we'll see