Quote:
Originally Posted by Visionoz
IIRC Alex Cherney has a Sony NEX5 modded by these folks
HTH
Cheers
Bill
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I've got a 40D en route modded by them for visual plus Ha so it ought to behave like a cross between a 60Da and a Baader modified camera. Here's hoping. I'm building as cooler box for it now.
By the way, I've been looking more closely at that design of Gary Honis - using both the older esky/peltier and the more recent customised box designs. One thing they have in common is that the outside peltier in each case is mounted in air-to-plate fashion - the cold side is mounted to the outside surface of the metal box - with a second smaller heatsink/fan inside. There is no insulation inside either. All the styrene insulation is on the outside.
That means that in both designs, he is using the entire metal housing as the internal heat sink - not just the little sink/fan thingy.
That becomes interesting when you reflect on some recent discussions in this thread about the relative differences in size between inside and outside heat sinks and the implications this may have for efficiency.
The designs I've been working on do not try to cool the entire metal box. They are air-to-air designs - so the cold-side is attached directly to its own heatsink/fan and has no physical connection to the metal box - so the only inside heatsink in the actual box/chamber is the heatsink directly attached to the cold side of the peltier.
And I have insulation both inside and outside the box. So the cooling effect is achieved by what blows straight off the back of the peltier and not radiated from the whole metal box. I don't know how much of a difference this will make. Maybe none. But it just struck me that it is quite different in the cooling mechanism from the Honis model.
Peter