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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: I read it wrong, I'm sorry. You're right. posted by Tre' on October 16, 2014 at 11:00:13:
I mean I tested with 4 tubes. The tubes all give the same values more or less (12 - 15mA).
But WAY out of spec... like completely.
12mA @ 167V seems not a very linear region to me. I aimed for 25mA, but got a bit less bias than expected. Apparently the heater draws a bit less current then the data sheet says.
NC
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Follow Ups
- NP, but are high mu tubes really that out of spec?? - Nickel Core 11:10:19 10/16/14 (3)
- that sure has been my experience with octals... perhaps worse with 9 pin because of closer quarters?~nT - Cleantimestream 06:05:04 10/17/14 (0)
- I think they can be. (nt) - Tre' 11:54:45 10/16/14 (1)
- I think I solved the mystery, now verifying... (nt) - Nickel Core 11:56:41 10/16/14 (0)
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