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Light Seeker Circuit

, and . International Journal of Innovative Science and Modern Engineering (IJISME), 4 (7): 4-5 (September 2016)

Abstract

Light seeker uses two LDRs to find the difference between the intensity in two different directions. This circuit uses operational amplifier to amplify the small difference in voltage measured by LDRs. The amplifier stage’s output can further be used to control or send signal to microprocessor or microcontroller. The advantage of using this circuit is that it can measure the minute differences with utmost accuracy and it has no digital components thus it provides a wide range of operation. This circuit uses very simple electronic devices and thus it is very economic and useful.

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