@article{oai:jaxa.repo.nii.ac.jp:00031955,
 author = {林, 友直 and 橋本, 正之 and HAYASHI, Tomonao and HASHIMOTO, Masashi},
 issue = {1_A},
 journal = {東京大学宇宙航空研究所報告},
 month = {Jan},
 note = {対数差動回路を用いた電子衝撃形電離真空計について述べてある.これは対数変換素子を用いて,イオン電流と電子電流をそれぞれの対数に比例した電圧に変換し,次に,この二つの電圧を差動増幅器に加えることによって圧力の対数を出力として得のであるる.この方法によれば電子流制御回路が不要となるので電力消費がきわめて少くなり,同時に,装置全体を非常に小形化することができる.対数変換素子として真空管の初速度特性および半導体ダイオードの順方向特性について調べ,さらに幾つかの回路を比較検討している., The performance of an electron bombardment type ionization gauge with logarithmic differential circuit is discussed. By using logarithmic elements ion and electron currents are both converted into the voltages which are proportional to the logarithms of each input current. These voltages are introduced to a differential amplifier and the logarithm of the pressure is obtained as the output voltage. Since emission regulator is unnecessary the power consumption_ is fairly saved and the whole unit can be made very compact. The initial current characteristics of vacuum tubes and the forward characteristics of semiconductor diodes are investigated as the logarithmic elements and several circuits are proposed for comparison., 資料番号: SA0125030000},
 pages = {37--47},
 title = {対数差動形電離真空計},
 volume = {3},
 year = {1967}
}