Saturday, August 29, 2009

WATER LEVEL CONTROLLER

first part of project


INTRODUCTION

It is the circuit which will be used in house water tank, water tanks of buildings. It is a fully automatic circuit, if someone used this circuit then there is no need of fill the water tank daily, switch on/off the motor daily. It automatically operate without the permision of the user. Once the circuit operates, it will do their job for infinitely unless the circuit is damage.

PRINCIPLE

It is based upon the principle of conduction of water. We give earth to the water. When the water rises in the tank then the desired pins are conducting. Therefore the logic circuit acts as zero. It may be noted that the gates used in our circuit is made from the transister transister logic. If the input of any gate is kept open then it doesn’t mean that the input is zero. Open input acts as one. When we grounded the pin then it acts as zero.

continued to WATER LEVEL CONTROLLER 2

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