ABSTRACT:
Now-a-days technology has developed to a large
extend. At the same time the need for systems with automation and high security
are preferred. In this projects we are indicating high voltage and low voltage
of loads by using voice IC. In this projects for demo purpose we are using two
bulbs as loads. We are using current sensor to sense current consumed by loads
and ADC is to convert analog signal into digital. That converted data is given
to micro controller.MC checks whether current values increases from its
threshold level or not. If so, then it gives voice announcement by using
speaker.
This projects uses regulated 5V, 500Ma power
supply, 7805 three terminal voltage regulator is used for voltage regulation.
Bridge type full wave rectifier is used to rectify the ac output of secondary
of 230/12V step down transformer.
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DIAGRAM:
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