…The measurement quantity and range are selected by a rotary switch, and the scale has multiple graduations. In addition to the above, there are also electronic testers that have built-in DC amplifiers with high input impedance using field effect transistors. The input impedance is about 11 MΩ for DC voltage measurement and 500 kΩ to 1 MΩ for AC voltage measurement. … *Some of the terminology that refers to "electronic tester" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…測定量と範囲の切換えは回転スイッチによって選択され,目盛は多重目盛となっている。 以上のほか,電界効果トランジスターを使用した高入力インピーダンスの直流増幅器を内蔵したエレクトロニクテスターもある。入力インピーダンスは,直流電圧測定の場合11MΩ,交流電圧測定の場合500kΩ~1MΩ程度である。… ※「エレクトロニクテスター」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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