@article{oai:jaxa.repo.nii.ac.jp:00032204, author = {西岡, 通男 and 佐藤, 浩 and NISHIOKA, Michio and SATO, Hiroshi}, issue = {3_A}, journal = {東京大学宇宙航空研究所報告}, month = {Jul}, note = {低雑音の定温度型熱線風速計および直線化器を試作した.風速計は帰還回路に2次の高域しゃ断フィルタを組入れることもでき,出力雑音は風速換算値で従来より一けた小さく0.03%~0.06%にできる.直線化器は温度補償ができ取扱いの容易なトランジスタチェイン[8]回路である.試作器は2チャンネルであるが,チャンネル間の相互干渉もなく,試測定の結果は良好であった.この報告の前半では熱線の特性や回路原理さらに周波数応答や雑音などに関して議論し,後半部では試作器の回路とその取扱いを説明している.また周波数応答の簡単な測定法が述べられ,試作器の風速変動に対する周波数応答が記されている., A constant-temperature hot-wire system was newly designed and constructed. In order to reduce the noise, a 2nd-order high-cut filter was inserted into the feedback loop. The stability criterion was made and the operation of the system was proved to be satisfactory. The noise level was reduced down to one tenth of the original system. The linearization of the output was made by a transistor chain of common emitters. Details of construction and operation are presented., 資料番号: SA0125354000}, pages = {571--589}, title = {低雑音,定温度型熱線風速計の試作}, volume = {6}, year = {1970} }