| 单词 | pentode |
| 例句 | Remember how he went to all the trouble of building a pentode vacuum tube for a job that could have been done by transistors. Anything You Can Do! Remember how he went to all the trouble of building a pentode vacuum tube for a job that could have been done by transistors he already had had a chance to get and didn't. Anything You Can Do ... In the final amplifier stage Harry used a Telefunken pentode, the famous and very efficient RL12P35 which was used in the German tank transmitters in all stages, oscillator, P.A. and audio amplifier/suppressor grid modulator. The Dawn of Amateur Radio in the U.K. and Greece: a personal view In 1935 George and his father Costas built a one-valve transmitter using a type 59 pentode with suppressor grid modulation, and succeeded in contacting most of the world with this QRP rig. The Dawn of Amateur Radio in the U.K. and Greece: a personal view My first transmitter was just an electron coupled oscillator using a type 59 output pentode from a radio. The Dawn of Amateur Radio in the U.K. and Greece: a personal view |
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