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Old 23rd May 2020, 01:16 AM   #9501
kodabmx is offline kodabmx  Canada
Spreading triode love.
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Haha. It's one of a pair that's out of the frame. Just needs dusting, I promise
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Old 23rd May 2020, 09:04 PM   #9502
alex mm is offline alex mm  Romania
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I'm working on PP EL 84 +ECC83 audio amplifier and toroidal transformers . pictures attached .

B.R. Alex
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File Type: jpg IMG_20200523_232939.jpg (584.3 KB, 146 views)
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CD player Onkyo C-N 7050 , Preamp's :Adagio tube
and Goldmund Mimesis 27 , Speakers :Taga Harmony Platinum F-120 Amp's: 2XGoldmund Mimesis9.2, A33, 2XGROMES A260 tube , SARA , QUAD 405-13
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Old 24th May 2020, 01:42 AM   #9503
dch53 is offline dch53  Australia
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Beautiful work!

What is the material in the centre of the output toroids and what is it for?

Did you make the mains transformer cover yourself or purchase it?

Last edited by planet10; 24th May 2020 at 04:16 AM. Reason: remove excess quote
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Old 24th May 2020, 04:34 AM   #9504
alex mm is offline alex mm  Romania
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Thanks, it is a kind of plastic for filling the empty space and fixing element. The cover for mains transformer can be buy on ebay from China .Schematic, attached.
B.R.Alex
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File Type: jpg Screenshot - 07-Apr-2020 , 10_50_33 AM.jpg (110.4 KB, 203 views)
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CD player Onkyo C-N 7050 , Preamp's :Adagio tube
and Goldmund Mimesis 27 , Speakers :Taga Harmony Platinum F-120 Amp's: 2XGoldmund Mimesis9.2, A33, 2XGROMES A260 tube , SARA , QUAD 405-13

Last edited by alex mm; 24th May 2020 at 04:37 AM.
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Old 24th May 2020, 04:40 AM   #9505
kissabout2002 is offline kissabout2002  Italy
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Quote:
Originally Posted by alex mm View Post
I'm working on PP EL 84 +ECC83 audio amplifier and toroidal transformers . pictures attached .

B.R. Alex
Beautiful congrats, so do you mean you did those toroidal ? ....all the best
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Old 24th May 2020, 09:59 AM   #9506
gideon1990 is offline gideon1990  Netherlands
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Quote:
Originally Posted by dch53 View Post
Beautiful work!

What is the material in the centre of the output toroids and what is it for?

Did you make the mains transformer cover yourself or purchase it?
plastic beads like those can be bought very cheap in bulk, it cuts down on how much of the much more expensive casting material you need.
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Old 24th May 2020, 03:41 PM   #9507
alex mm is offline alex mm  Romania
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Today, have finished, inside connections, tests will follow soon ! Thanks , no, toroidal are factory made .
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File Type: jpg IMG_20200524_180301-001.jpg (979.7 KB, 193 views)
File Type: jpg IMG_20200524_180324-001.jpg (745.2 KB, 171 views)
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CD player Onkyo C-N 7050 , Preamp's :Adagio tube
and Goldmund Mimesis 27 , Speakers :Taga Harmony Platinum F-120 Amp's: 2XGoldmund Mimesis9.2, A33, 2XGROMES A260 tube , SARA , QUAD 405-13
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Old 25th May 2020, 10:05 AM   #9508
LKA is online now LKA  Europe
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my "old" 25W/4R PP UL after upgrading the driver stage PP-UL-EL34 - Google Photos
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File Type: jpg PP25-2020-pic4.jpg (204.7 KB, 224 views)
File Type: jpg PP25-2020-pic5.jpg (109.6 KB, 171 views)
File Type: jpg PP25-2020-pic1.jpg (294.2 KB, 139 views)
File Type: jpg PP25-2020-pic3.jpg (298.3 KB, 163 views)
File Type: jpg PP25-2020-pic2.jpg (377.8 KB, 174 views)
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Old 25th May 2020, 12:12 PM   #9509
mhouston is offline mhouston  Australia
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Originally Posted by LKA View Post
my "old" 25W/4R PP UL after upgrading the driver stage PP-UL-EL34 - Google Photos
Looks great. Good work.
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Old 25th May 2020, 12:24 PM   #9510
gerrittube is online now gerrittube  Netherlands
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Hi LKA, very nice build. What’s the change in your driver stage? CCS?

Regards, Gerrit
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