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[SNO] 23 [PROJECT NAME] 
Power Grid Control through PC: This circuit is a level sensor or proximity sensor. It can be used to detect the level of a liquid in a tank without any contact. It operates by detecting the distance from the target by reflection of an infrared beam. The range of the device can be set from a few cm. to about 50 cm. by means of a trimmer. The range of the device is dependent on the infrared transmitting and receiving LED’s used and is mostly affected by the color of the reflecting surface. Surfaces with black color greatly lower the device's sensitivity.
Top 25 Electrical Mini Projects for Engineering Students
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