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Total 3 documents matching your query.

1. [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 9 Nov 2002 08:40:07 -0800; Bill, - Some high-u tetrodes by function of tube geometry are not best operated with the grid and screen tied together Grounded grid 4-250A & 4-400A tetrodes should actually be operated with proper d; /archives//html/Amps/2002-11/msg00147.html (7,500 bytes)
2. [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 10 Nov 2002 09:07:14 -0800; Hi Jim, - Yep, a lot of 4-250a, 4-400a plug and play has been done through the years. For a new project, I would separate the grids and provide control bias to G1. The series zener in the filament xm; /archives//html/Amps/2002-11/msg00158.html (8,519 bytes)
3. Fw: [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Mon, 11 Nov 2002 07:43:32 -0800; Your were fortunate, but I doubt every tube of the same family and type would default idle at 60mA. Cutoff bias is made with the neg supply method by simply lifting the "grounding side" of the resist; /archives//html/Amps/2002-11/msg00176.html (8,618 bytes)

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