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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: RE: Also, anyone addressed the high B+ issue on the 208 posted by DAK on October 20, 2024 at 08:24:50:
The problem is, knowing what the bias voltage is doesn't tell you what the idle current through the tubes is. High idle current through the 7591s is what will wear them out. I would start by putting a 10 ohm resistor in the cathode of each of the output tubes so you can know what the current is.
Current = voltage / resistance
Tre'
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Follow Ups
- RE: Also, anyone addressed the high B+ issue on the 208 - Tre' 07:43:33 10/21/24 (4)
- What pin on the 7591 do I put the 10R resistor? ntd - DAK 12:10:45 10/21/24 (2)
- RE: What pin on the 7591 do I put the 10R resistor? ntd - Tre' 13:02:53 10/21/24 (1)
- RE: What pin on the 7591 do I put the 10R resistor? ntd - DAK 13:17:31 10/21/24 (0)
- RE: Also, anyone addressed the high B+ issue on the 208 - DAK 12:00:19 10/21/24 (0)
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