英语词汇“vacuum-tube keying”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	vacuum-tube keying
释义	vacuum-tube keying vacuum-tube keying [′vak·yəm ¦tüb ′kē·iŋ] (electronics) Code-transmitter keying system in which a vacuum tube is connected in series with the plate supply lead of a frequency-controlling stage of the transmitter; when the key is open, the tube blocks, interrupting the plate supply to the output stage; closing the key allows the plate current to flow through the keying tube and the output tubes.
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