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Old 23rd September 2009, 07:32 PM   #11
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use a small copper bar with two holes in it, one hole each side of the fet. use this bar as a clamp when you put screws into the heatsink. i'd draw a picture, cept i think i'm going to fall asleep at my desk.
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Old 23rd September 2009, 08:30 PM   #12
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Didn't Steen(oe) show how to do that some years ago?

RK

Last edited by R-K Rønningstad; 23rd September 2009 at 08:34 PM.
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Old 23rd September 2009, 08:41 PM   #13
Magura is offline Magura  Denmark
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Quote:
Originally Posted by R-K Rønningstad View Post
Didn't Steen(oe) show how to do that some years ago?

RK
Lots of us has shown that.
I know for sure that I have posted pics of such a solution, but ......

I did a search, but came up with nothing.


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Old 23rd September 2009, 08:48 PM   #14
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OK, anyway, it should not be that difficult clamping it with a solid aluminium bar. Gonna finish my ZV9 this winter (yes, I will!!!) and will stumble into this. Gonna take a jpeg of my solution... Or should I drop it and get those old Sony VFETs???????????
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Old 23rd September 2009, 08:50 PM   #15
Magura is offline Magura  Denmark
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There's a GB going for the southsemi jfets, in case you haven't noticed.


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Old 23rd September 2009, 09:12 PM   #16
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Thank you, yes, I saw it. And there are Sony VFETs available as well....
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Old 23rd September 2009, 10:37 PM   #17
toufu is offline toufu  United States
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I soldered the Lovols to the plates of busted MOSFET's.
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Old 24th September 2009, 12:52 AM   #18
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Quote:
Originally Posted by d to the g View Post
use a small copper bar with two holes in it, one hole each side of the fet. use this bar as a clamp when you put screws into the heatsink. i'd draw a picture, cept i think i'm going to fall asleep at my desk.
Too funny.
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Old 24th September 2009, 12:53 AM   #19
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I just drilled a piece of L-channel aluminum on two sides and mounted to the point it would not move when poked at with a small screwdriver. Easy and cheap. The L acts like a secondary heatsink as well.
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Old 26th September 2009, 07:15 PM   #20
Gyuri is offline Gyuri  Hungary
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A little bit forgot the ZV9, because of F4.
But I picked it out now. The thing works very well, but i'm must finished it.
Do pictures interest somebody possibly?

Click the image to open in full size.

To avoid misunderstandings not with the weller, but I soldered it with the method written down earlier, avoiding the sudden refrigeration.

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