February 5, 200917 yr comment_203481 The boards would already be connected to the angled aluminum (done by the builder) Comments? I think this is best, this way the boards can be tested once assembled. Once the heatsink angle iron is fitted, you don't have to worry about undoing it, shipping and risking damage as the end user is trying to refit the angle iron. Report
February 5, 200917 yr comment_203487 Maybe the prime builders ought to have a separate thread to facilitate the design and integration process, which should include as a minimum: prototype board design and its testing/validation, parts selection and specs, amp chassis integration issues, parts procurement/cost, and assembly/test/distribution issues. Any thoughts? Report
February 5, 200917 yr comment_203506 Okay cool... I just need to know specs and price range. Let me know when the info is solidified What's hip in toroidals these days? Plitron? Report
February 5, 200917 yr comment_203508 ok, here's what I'm thinking in terms of responsibility: pars - boards / BJT matching Not sure how I am going to do the boards? Other than that... Report
February 6, 200917 yr comment_203562 n_maher - internal wiring procurement and distribution wut? Report
February 6, 200917 yr Author comment_203563 wut? I dunno, we like need wire and you seem to always have a lot of it lying around ... I can always give this one to someone else if you aren't up for it! Report
February 6, 200917 yr comment_203569 Just this... I remember studying partial diff. eqs in college Looks like fluid mechanics or quantum mechanics or something.... That was many beers/years ago. Report
February 6, 200917 yr comment_203573 I remember studying partial diff. eqs in college Looks like fluid mechanics or quantum mechanics or something.... That was many beers/years ago. Continuum mechanics? Definitely using continuity to simplify. Report
February 6, 200917 yr comment_203579 I dunno, we like need wire and you seem to always have a lot of it lying around ... I can always give this one to someone else if you aren't up for it! I'm not sure I've ever had that much just laying around. But if you guys want some exotic wire for this project I'll work my contacts and discounts and see how cheaply it can be had. Report
February 6, 200917 yr comment_203612 Ya'll head on up to Nate's House 'O' Wire. If we don't have the wire you're a lookin' fer, I'll eat a bug. Free cotton candy fer the little uns. Report
February 6, 200917 yr comment_203620 Pars, Is that Dynafet board design done yet? Fuck you. Still contemplating post 161 Report
February 6, 200917 yr comment_203621 Fuck you. Still contemplating post 161 ah yes.... it must be studied closely Report
February 6, 200917 yr comment_203623 I can foresee this project... for those in a rush... it is not Report
February 6, 200917 yr comment_203626 Pars, Did those Dyhani transistors I sold you work out ok? Report
February 6, 200917 yr comment_203630 Not quite that far yet, but I'm sure they will. Boards are pretty much done other than putting the transistors in. I also need to decide how i will mount these to the heatsinks (angle bracket or standing up straight onto rectangular section aluminum). SumR transformer on order, plus case. BTW, did anyone happen to download j4cbo's Eagle schematics and/or board files on headwize? Looking at the board, it may be possible to do this in the freeware version of Eagle. Maybe. http://headwize.com/ubb/showpage.php?fnum=3&tid=6584&srch=dynafet; Edited February 6, 200917 yr by Pars Report
February 6, 200917 yr comment_203632 Not quite that far yet, but I'm sure they will. Boards are pretty much done other than putting the transistors in. I also need to decide how i will mount these to the heatsinks (angle bracket or standing up straight onto rectangular section aluminum). SumR transformer on order, plus case. Did you see my post earlier here. I used an angle aluminum bracket. I have two unpopulated Dynahi boards and one unpopulated Dynahi PSU pcb I ought to put up for sale at some point. Report
February 6, 200917 yr comment_203635 Yes, I was looking at that as yours is a very well done example of angle bracket. I just always wondered why most people did it that way instead of mounting the output BJTs straight up onto a rectangular section about the thickness of the board offset (3/8") or so? I guess the angle bracket does lend itself to the board mount for that side and all. It would be nice in the Dynafet project to make the boards so they could kinda interchange in a Dynahi as far as mounting, etc. so you could swap boards in the same amp chassis. Report
February 6, 200917 yr comment_203638 I wonder if Jacob P. is still on Headwize. I bet he might jump at the chance to finish off this board for us... Report
February 6, 200917 yr comment_203640 Yes, I was looking at that as yours is a very well done example of angle bracket. I just always wondered why most people did it that way instead of mounting the output BJTs straight up onto a rectangular section about the thickness of the board offset (3/8") or so? I guess the angle bracket does lend itself to the board mount for that side and all. It would be nice in the Dynafet project to make the boards so they could kinda interchange in a Dynahi as far as mounting, etc. so you could swap boards in the same amp chassis. Man you read my mind Report
February 6, 200917 yr comment_203643 I wonder if Jacob P. is still on Headwize. I bet he might jump at the chance to finish off this board for us... Hmm, I wonder. I wasn't sure if he might not even be a regular here or HF... board says Jacob Potter. Report
February 6, 200917 yr comment_203644 Hmm, I wonder. I wasn't sure if he might not even be a regular here or HF... board says Jacob Potter. I just PMed him at Headwize... let's see what happens. Report
February 6, 200917 yr comment_203647 First stab at a BOM. I took the Google one from Headwize and started updating it with some info Marc provided. http://home.comcast.net/~youngc1/DynaFET BOM.xls Report
February 6, 200917 yr comment_203652 I just PMed him at Headwize... let's see what happens. and PMed him on HF (though he has not been there since october) Report
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