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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Extend tube life options.. posted by Nickel Core on November 24, 2015 at 07:00:09:
You certainly have an issue here.
The failure modes are #1 filament breakage then #2 Emissions. If you really feel that the benefit is keeping your caps charged, you could put in a stand-by switch right before the output transformer B+ in. Then you would need separate power switches for the B+ and the filament supply.
When you are not listening you can flip the stand-by switch to cut the B+ and then switch off the filament supply. Your 300B would see no voltage but the B+ circuit would be fully energized. Then to play, turn on the filament supply for a minute or so before flipping the stand-by switch.
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Follow Ups
- RE: Extend tube life options.. - Chip647 07:23:36 11/24/15 (2)
- RE: Extend tube life options.. - Nickel Core 07:27:39 11/24/15 (1)
- RE: Extend tube life options.. - drlowmu 11:20:23 11/24/15 (0)
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