Preface

The term “high technology” is perhaps one of the more overused descriptions in our technical vocabulary. It is a term generally reserved for discussion of integrated circuits, fiber optics, satellite systems, and computers. Few people would associate high technology with vacuum tubes. The notion that vacuum tube construction is more art than science may have been true 20 or 30 years ago, but today it is a different story.

The demand on the part of industry for tubes capable of higher operating power and frequency and the economic necessity for tubes that provide greater efficiency and reliability have moved power tube manufacturers further into the high-tech arena. Advancements in tube design and construction have given end users new ...

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