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Old 29th August 2009, 06:57 PM   #11
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Originally Posted by jmillerdoc View Post
I just finished the Oddblocks project at www.Diyaudioprojects.com, which uses this type of CCS arrangement with a LM317 as a self inverting circuit. It sounds fantastic! I have never seen it using 2 CSS like here, I wonder what the purpose of x2 LM317's serve?
I think if I were to go this route again I woud use Bruce Heran's design for the EL84. Thanks though, again a very interesting design.
Jeff
By using two LM317's you fix the standing current in both valves which avoids core saturation in the OT. It never needs adjustment. The caps allow the differential nature of the output to be preserved.

Shoog
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Old 30th August 2009, 05:27 AM   #12
DougL is offline DougL  United States
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If I was looking for a project that used 8K:8 transformers,
the one I admire most is http://syclotron.com/?page_id=3, SY's RED LIGHT DISTRICT. Solid engineering, clear documentation. Looks like a straightforward build. no exotic parts.

Doug
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Old 30th August 2009, 07:33 AM   #13
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Originally Posted by DougL View Post
If I was looking for a project that used 8K:8 transformers,
the one I admire most is http://syclotron.com/?page_id=3, SY's RED LIGHT DISTRICT. Solid engineering, clear documentation. Looks like a straightforward build. no exotic parts.

Doug
Doesn't sound very special though.

Shoog
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