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An optical instrumentation using dual sensor-dummy against noises

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5 Author(s)
Mine, K. ; Kyushu Kyoritsu Univ., Kitakyushu, Japan ; Kubota, N. ; Morimoto, F. ; Sanada, M.
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Methods of Alternating Noise Canceling (ANC) were previously developed for the optical instrumentation: one using a dual photo sensor and another using a single photo sensor that could cancel normal mode noise (NMN) on a transmission line, even if the noise was equal status noise. A method using a sensor with a sensordummy resistance was also previously developed using ANC method against NMN not only on a transmission line but also on a sensor line. In this case, the sensordummy resistance had to be adjusted to a suitable averaging value against the changing impedance of the photo sensor. A new method of ANC is developed using a photo sensor and a dual sensor-dummy i.e. an inverse-connected sensordummy. This method doesn't need adjustment for any dummy resistance

Published in:

Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE

Date of Conference:

10-12 May 1994