In this second of a two video series, I will discuss the design and function of the two most commonly utilized amplifier output tubes, the Pentode and the Beam Tetrode or Beam Power Tube. The strengths and weaknesses of each will be covered in detail. We will take a look at the visible characteristics as well as discuss the parallel technical developments which took place in both England and the U.S. NOTE: For best continuity and comprehension, it is recommended that you watch Part 1 first.
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