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Rca 21-t639

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11-12-2006, 11:44 PM

Steve K

VideoKarma Member

Join Date: Sep 2002

Location: Thousand Oaks, CA

Posts: 503

Actually a 6AX4 is a damper tube. I am surprised that the diagram calls it a ballast as a ballast tube is usually a resistance device that is found in a power supply to keep current constant.

Steve

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