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Old 2nd March 2012, 04:24 PM   #31
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I'm working on a revision to the layout in a possible Thor MKII PCB.

Made more room for the compensation caps, moved some components around, most noticable is the heatsinks and output Laterals FET's. Overall the layout is cleaner and more streamlined than the first.

Price would be $25USD for a pair of boards. All depends on how it goes with my remaining boards.

Attached is the layout.

Regarding building the Thor amp with the current amp boards, the 100nF cap across bias resistor R5 should be omitted, it is not needed, was a TBD component that managed to stay in the design all through the design phase, layout phase and manufacturing of boards.
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File Type: png ThorMKII_Layout.png (124.9 KB, 363 views)
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Old 2nd March 2012, 07:19 PM   #32
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Thor Supply Board.
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File Type: png Thor_Supply_Layout.png (97.9 KB, 352 views)
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Old 2nd March 2012, 07:51 PM   #33
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Did you know the heat sinks are backwards in you amp board layout?
The arrow points to the mounting face.

Otherwise, beautiful layout.
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Old 3rd March 2012, 10:31 AM   #34
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Quote:
Originally Posted by Avro Arrow View Post
Did you know the heat sinks are backwards in you amp board layout?
The arrow points to the mounting face.

Otherwise, beautiful layout.
Well, havent really though about that. Besides, they are totally symmetric so you can mount stuff on either side.

And thanks.
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Old 3rd March 2012, 11:19 AM   #35
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Well, moved the heatsinks around so the FET's mount on the arrow side.
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Old 3rd March 2012, 11:47 AM   #36
Nisbeth is offline Nisbeth  Denmark
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Did you post this to hoved-fi.dk (weel, I guess you didn't, but you should )

/U.
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Old 3rd March 2012, 12:46 PM   #37
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Quote:
Originally Posted by Nisbeth View Post
Did you post this to hoved-fi.dk (weel, I guess you didn't, but you should )

/U.
No I haven't. I might consider it, but then I would have to keep up to date with 2 different threads about the same thing.

Lets see what happens.
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Old 3rd March 2012, 01:12 PM   #38
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Looking at my Power supply design, I have considered putting a cap multiplier after the regulation.

Simulations are very encouraging, goes from around 1mV p-p ripple to something below 10uV p-p.

But still just considering it.
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Old 3rd March 2012, 01:38 PM   #39
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Received payment for 1 pair of boards, have 1 payment pending. That leaves 3 pairs of the first boards left.

When they are sold and if there is still interest some interest in boards, MKII will be finalized, ordered, built and tested.

Same performance, better layout. Slighty larger board, on the order of less than 1mm in width and length as well as the mounting holes moved slightly. This is due to the first board being in imperial, while I used metric for MKII.

Old boards are 99 x 99mm while MKII are 100 x 100mm.

Everything, including Amp boards, Supply board and No-Thump board is made to fit in a 1NGXA283 case from Modushop.biz
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Old 4th March 2012, 01:30 PM   #40
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Well, because I have no life and because I can, Thor MKII is now finished.

Now on to adding a cap multiplier to my supply board.
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File Type: png ThorMKII_Layout.png (130.6 KB, 296 views)
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