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#1611 |
diyAudio Member
Join Date: Dec 2009
Location: Bay City, Michigan
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Thanks Evan. Need any aluminum dust ??
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Bob M. "Arrange Whatever Pieces Come Your Way." |
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#1612 | |
diyAudio Member
Join Date: Oct 2010
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Quote:
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#1613 |
diyAudio Member
Join Date: Dec 2009
Location: Bay City, Michigan
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This build has been running without a C9 cap (ghosted blue). Instead of just asking where to place it (them), I drew out the circuit so any additional suggestion could be added. The CL-60s run very hot which I believe is normal, but not sure they are in the best location.
So how many C9s and where? ![]()
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Bob M. "Arrange Whatever Pieces Come Your Way." Last edited by bcmbob; 3rd April 2014 at 03:51 PM. |
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#1614 |
Official Court Jester
diyAudio Member
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NTC needs to be hot , to drop resistance
greenhorn alert !: pull off mains cord!! , then touch NTC ! that way you'll burn just finger , not brain ![]()
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my Papa is smarter than your Nelson ! clean ![]() ![]() ![]() |
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#1615 |
R.I.P.
Join Date: Jul 2004
Location: Scottish Borders
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Fitting bypass relay contacts will get the temperatures down.
And prepare the NTCs for the next occasion they are required.
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regards Andrew T. |
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#1616 |
diyAudio Member
Join Date: Dec 2009
Location: Bay City, Michigan
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My fingers are just fine - thank you! As for the brain part, remember I lived through the "60s" so I'm working mostly with cinders there.
![]() My thought was the CL-60s should cool somewhat after the resistance falls, but they stay right up there. I won't fret about it. Andrew - your idea sounds slick, but I believe would require an additional power source - correct? No mention of the C9 filtering. Does that imply it may be considered optional and required on noisy mains only? I see there are two in the BA-1 PS schematic: "Capacitors C1 and C2 are line-rated types only, as they will be filtering AC line voltages."
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Bob M. "Arrange Whatever Pieces Come Your Way." Last edited by bcmbob; 3rd April 2014 at 07:49 PM. |
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#1617 |
diyAudio Member
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Not if you use an AC relay. Look at the attached soft-start circuits.
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#1618 |
Official Court Jester
diyAudio Member
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__________________
my Papa is smarter than your Nelson ! clean ![]() ![]() ![]() |
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#1619 |
diyAudio Member
Join Date: Dec 2009
Location: Bay City, Michigan
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Some clever ideas. I'll take a shot at incorporating something similar in the upcoming complementary (& hopefully balanced) build.
Thanks
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Bob M. "Arrange Whatever Pieces Come Your Way." |
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#1620 |
diyAudio Member
Join Date: Aug 2005
Location: Big D
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How about a BA-3 3-deep Turbo? With 32V rails and 1A bias per device what would we get for output power? Would the big chassis heat sinks be big enough? Would I need a fire extinguisher? What would it take to get to 50 watts?
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