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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: OOOPS! APOLOGIES!! I take it back, you're right. Here's the scoop: posted by radiance on July 6, 2006 at 18:30:13:
The 10 is a thoriated tungsten (dull emitter) per the data sheet. Bright emitters are pretty rare outside big transmitters.The original 201 was a bright emitter in 1920 but was replaced by the dull emitter 201A in 1922 as this reduced the heater power required to 1/4.
The 210 was the first power triode available but wasn't introduced until 1925 so it used the more efficient thoriated tungsten.
Mark Kelly
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Follow Ups
- 10 - Mark Kelly 18:56:19 07/06/06 (5)
- Just to confuse things... - jub_jugs 01:41:47 07/07/06 (3)
- Yeah, long plated some WE's - Ivan303 07:22:17 07/07/06 (2)
- if you were designing the perfect SET tube, would you... - radiance 11:11:26 07/07/06 (1)
- Re: Designing the perfect SET tube, I would... - Dave-A 19:20:42 07/07/06 (0)
- thank you, I have saved the data sheet; I had found... - radiance 21:06:38 07/06/06 (0)
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