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Old 14th November 2012, 03:25 PM   #1
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Location: Toronto, Ontario
Default SSE - D3, D4 and TR1

I received my SSE board a few days ago. I am seeing two additional diodes D3 and D4 and TR1 (thermistor ?) connected to
the rectifier tube but I don't see these in the assembly manual or parts list. I'll be using tube rectification.

Maybe this was discussed on the forum sometime back, I'll have go back and see.
In the meantime can someone tell me the Digikey part numbers for these ?
Wish I'd known about these before as I've already obtained all my parts from Digikey.

Last edited by spendorite; 14th November 2012 at 04:52 PM.
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Old 14th November 2012, 06:34 PM   #2
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The answer is in this thread: Starting a SSE build
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Old 14th November 2012, 07:30 PM   #3
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Thanks a lot Spoon109, I checked the thread and got my answer.
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Old 15th November 2012, 12:44 AM   #4
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The parts are not needed, you can place jumpers in all 3 places and the new SSE board will be exactly like the SSE board sold for the last 6 years.

However, adding these parts can extend the life of todays less than stellar rectifier tubes. About 3 years ago there was a six month period where Shuguang, Sovtek, and JJ all shipped some bad batches of 5AR4's. Some builders saw 1 or 2 tubes blow up on initial startup. Once a good tube was found, they lived for years. Sooner or later this situation will happen again.
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
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