| 11. | In his senior year he wrote a " Study of the negative transconductance of pentodes ".
|
| 12. | The vacuum tubes indicated in Hewlett's patent were pentodes rather than the triodes shown here.
|
| 13. | All these models employed output transformers and beam tetrode or pentode tubes ( for increased efficiency ).
|
| 14. | The series shares the EIA 9BF pinout with a number of other miniature pentode tubes of the era.
|
| 15. | Beam tetrode audio power output valves were introduced in 1937, and quickly replaced conventional pentodes in this application.
|
| 16. | This was solved by the Neutrodyne circuit, and later the development of the tetrode and pentode around 1930.
|
| 17. | An important part of the neutralization of a tetrode or pentode is the design of the screen grid circuit.
|
| 18. | A similar series was published after 1945 utilising the then ubiquitous EF50 RF pentode amplifier valve ( tube ).
|
| 19. | The "'EL34 "'is a thermionic valve or vacuum tube of the power pentode type.
|
| 20. | The pentode was invented in 1926 by Bernard D . H . Tellegen and became generally favored over the simple tetrode.
|
