Photoelectric tracking circuit composed of silicon photocell

Published:2011/3/30 0:58:00 Author:Nicole | Keyword: Photoelectric tracking circuit, silicon photocell | From:SeekIC

As shown in the figure, using two silicon photovoltaic cells with similar performance as light receiving device, when incident light flux is the same Vo = 0, agency works with predetermined manner. when the optical system has slight deviation, the received luminous flux of two silicon photovoltaic cells will change, then Vo ≠ 0, after amplified, the differential output signal can drive the implementing agencies (such as micro-motor) to orrect the system state, until Vo=0, so as to achieve tracking.



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