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Abstract
A two-phase lock-in amplifier has been constructed, using Grimbleby's averaging filter switched capacitor and a PLL circuit. The band pass frequency is locked to an external frequency reference. The unit has a frequency response from 5 Hz to 1 KHz and surpasses the performance of commercial products in regard to the response to a modulated signal and the measurement rate.
Journal
- Bulletin of Shimane Medical University [List of Volumes]
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Bulletin of Shimane Medical University 18, 87-92, 1995-12-00 [Table of Contents]
Shimane University
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