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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 12th February 2013, 04:35 AM   #21
rknize is offline rknize  United States
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Because the circuit is cathode-biased, small changes in B+ from rectifier changes won't result in much change in the output tube operating conditions. The circuit automatically tries to compensate. The only way to do it effectively is to make the resistor itself easily swappable or have multiple resistors that are switchable.
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Old 12th February 2013, 12:22 PM   #22
rock12 is offline rock12  United States
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look at thread from march28,2010 SSE questions, post #61 shows a nice wiring diagram for a cathode bias switch somewhere there is a pic also
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Old 13th February 2013, 02:57 AM   #23
the trooper is offline the trooper  United States
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Will do thanks for the tip
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Old 22nd February 2013, 01:32 AM   #24
the trooper is offline the trooper  United States
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Default sse build

Started working on the simple se top plate. I will be posting pictures of chassis this weekend
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File Type: jpg SDC11518.JPG (261.6 KB, 240 views)
File Type: jpg SDC11519.JPG (262.3 KB, 239 views)
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Old 22nd February 2013, 02:29 AM   #25
boywonder is offline boywonder  United States
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Originally Posted by the trooper View Post
Started working on the simple se top plate. I will be posting pictures of chassis this weekend
Nice! paper templates......they work great!
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Old 23rd February 2013, 05:09 PM   #26
the trooper is offline the trooper  United States
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Default chassis

And this is how you put burn marks on nice lumber.......I should have this built by the end of the day
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Old 24th February 2013, 04:05 AM   #27
the trooper is offline the trooper  United States
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Default done

just needs a sanding and finish.
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Old 30th March 2013, 10:27 AM   #28
gthang is offline gthang  United Kingdom
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Your case work looks excellent. I'm planning and SSE project myself, was thinking along similar lines. What tool did you use to cut the 2mm? recess along the edge of the 4 pieces of wood?
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Old 30th March 2013, 05:35 PM   #29
jrn77478 is offline jrn77478  United States
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Your case work looks excellent. I'm planning and SSE project myself, was thinking along similar lines. What tool did you use to cut the 2mm? recess along the edge of the 4 pieces of wood?
Judging from the tool marks, a table saw?
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Old 4th April 2013, 04:01 PM   #30
the trooper is offline the trooper  United States
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Thank you for the compliment, I used a table saw for the recess and just mitered the corners. Blade must have some varnish build up. The top plate is from online metals. I would wait to have the metal on hand befor making any cuts, they only guaranty size to + or - 1/8"
Edcor just sent me a shipping notice so I should have this all done soon!
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