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Old 3rd June 2013, 03:50 PM   #1071
Zen Mod is offline Zen Mod  Serbia
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even if cut in half , their length will be wasted

maybe to cut them in 4 and make something as old Aleph series looking case - heatsinks on all 4 sides

all you need then is to make some nice inlets for corners , to make them pretty ...... same as substantial L shaped heat spreaders for inside corners

however , when I think little more - do not cut them , they're useless , send them to OPLDF

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Old 3rd June 2013, 04:41 PM   #1072
WalterW is offline WalterW  Netherlands
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OPLDF ???
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Old 3rd June 2013, 04:47 PM   #1073
Zen Mod is offline Zen Mod  Serbia
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Official Pass Labs Disposal Facility

in Serbia , where else ........

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Old 3rd June 2013, 04:56 PM   #1074
WalterW is offline WalterW  Netherlands
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Old 3rd June 2013, 05:49 PM   #1075
mns80 is offline mns80  Finland
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Quote:
Originally Posted by Zen Mod View Post
even if cut in half , their length will be wasted

maybe to cut them in 4 and make something as old Aleph series looking case - heatsinks on all 4 sides

all you need then is to make some nice inlets for corners , to make them pretty ...... same as substantial L shaped heat spreaders for inside corners

however , when I think little more - do not cut them , they're useless , send them to OPLDF

I was actually thinking of that in the beginning but settled for cutting them in half as I a little like the idea of a half meter high monoblock should handle about 500W that way without being too hot if I interpreted the graph correctly.
Of course they would dissipate more cut in 4 but maybe that could be saved for another time or project. I would like the enclosure to turn out high and narrow but that would mean that I have to put the transfomer(s) in front or behind the heatsinks.

Yes, they are quite useless, been that for over half a year now hopefully not for too long still.
I belive the postage would be quite steep sending them to OPLDF
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Old 8th August 2013, 11:33 PM   #1076
lhquam is offline lhquam  United States
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If using the BA-3 front-end with a crippled F4, there is one more capacitor in the chain than is necessary. In the BA-3 there is the output capacitor C3. In the crippled F4 there are C1 and C2. Is there any agreement about which one to eliminate?
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Old 8th August 2013, 11:39 PM   #1077
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little one....or both
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Old 9th August 2013, 01:48 AM   #1078
lhquam is offline lhquam  United States
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little one....or both
Opps, I asked about the BA-3 with F4 on the wrong thread. I shoulda asked one of the other threads.
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Old 16th August 2013, 09:58 AM   #1079
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Using Nelson's power supply design, C-R-C followed by a polyprop of 10uF to supply the front end only.
I was thinking I could use 4700uF instead of 10,000uF for the C-R-C but could I reduce the value of the final cap from 10uF because the front end is only drawing under 50mA I believe or is the current draw not related to the final cap?
Chris
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Old 16th August 2013, 11:26 AM   #1080
Itsmee is offline Itsmee  England
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You could use 4700uF and get away with it, but Nelson uses 2 15,000uF in the B1 and that draws about half the BA2 front end, he doesn't do anything without good a reason; no problem with using 1uF in place of the 10uF.

Why not go the 'whole hog' and use a separate regulated supply at a slightly higher voltage (+-30V), I can heartily recommend ZM's Shunty, this way you can avoid using huge caps.
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