| 11. | The principle of operation is identical to that of a vacuum tube triode.
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| 12. | The design used triodes as phase inverters and drivers.
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| 13. | It has a total of about 450 tubes ( mostly dual triodes ).
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| 14. | Prior to WWII, almost all electronic amplifiers were triodes used without feedback.
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| 15. | Even better was a using a vacuum triode because it provided some amplification.
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| 16. | In addition to improving the triode vacuum valve, he developed directional loudspeakers.
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| 17. | Successful embodiments use the 6AS7G and the Russian 6C33-CB power triodes.
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| 18. | The transmitter was a buzzer, and the receiver an amplifier with triode.
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| 19. | His triode tube was tubular and had the capability of being double sided.
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| 20. | In 1918, Edwin Armstrong used only triodes when he invented the superheterodyne receiver.
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