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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: What mains tranny -240 volt primary for a stereo PP 6BM8? posted by fatbottle on December 6, 2006 at 06:04:44:
FB,It depends on the tube. G2 in an EL84/6BQ5 is tough. Depending on the anode voltage used, a piece of wire or a 100 Ohm resistor is fine for triode wiring. OTOH, g2 in a 6p15p-ev/SV83 is quite fragile. This case requires g2 to be tied to the plate by a 1 KOhm resistor, when triode wiring.
I'm not sure how much of a beating g2 in the 6BM8's pentode section can take. FWIW, I've never seen a design that used 6BM8s in ultralinear mode. That suggest fragility to me.
Eli D.
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Follow Ups
- Re: Triode Wiring - Eli Duttman 16:39:27 12/06/06 (3)
- Re: Triode Wiring a Beam Tetrode - Ron Oehlert 13:15:47 12/07/06 (1)
- Re: Triode Wiring a Beam Tetrode - Eli Duttman 10:18:35 12/08/06 (0)
- Re: Triode Wiring - fatbottle 07:44:12 12/07/06 (0)
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