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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: 7189s in Dynaco ST-35 - Ouch! posted by Ivan303 on July 21, 2002 at 12:49:18:
Ivan,Believe it or don't, I think that pins 1 & 6, in a 7189A are intended NOT to be connected to anything. The internal connection of 1 & 6 is just to draw heat off (like an internal heat sink) to the socket.
I believe that the 7027A uses this same idea, for unused pins of the 6L6 types.
I guess I was think more like the NOS 7189 and 7189A. Though I notice that the Reflector 7189A mil spec do demand more power than the EL84.
I presume (big WAG) that if the plate voltage is more or less constant---that the extra load demanded by the 7189A is done via extra current draw on the PS. Thus, the disaster.
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Follow Ups
- Re: 7189s in Dynaco ST-35 - Ouch! - steven oda 13:27:12 07/21/02 (1)
- Great - Thanks (nt) - Bryon 19:08:44 07/21/02 (0)
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