翻訳と辞書 Words near each other ・ context-free ・ context-sensitive menu ・ contextually communicating sequential processes ・ continental drift ・ continuation ・ continuation passing style ・ continuations ・ continuous function ・ continuous system modeling program ・ continuous system simulation language ・ continuous wave ・ contract programmer ・ contraction ・ control ・ control and status register ・ control bus ・ control code ・ control flow ・ control language ・ control program Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク continuous wave ： FOLDOC continuous wave (CW) A term from early radio history, when the {spark gap} method of transmission was replaced by vacuum-tube oscillators. A spark gap initiates a ringing, damped sinusoidal wave in a tuned circuit consisting of an inductor and capacitor. The energy in this circuit is constantly changing between the capacitor's electrostatic field and the inductor's magnetic field. The energy is then coupled, loosely (so as not to dampen the wave too quickly), to the radiating antenna. In contrast, a vacuum-tube oscillator constantly adds energy to the tuned circuit, compensating for the amount coupled to the antenna, and the transmitted energy or "wave," is therefore "continuous". Many (especially radio amateurs) continue to understand "CW" to mean transmission by means a signal of a single frequency which is either on or off (e.g. Morse code), as opposed to a carrier which varies continuously in amplitude, frequency or phase. Some would even call the former "unmodulated" even thou スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.