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if no sine wave , then very simle circuit .
The sine wave generation from DC power is very difficult
therefore plese refer the sinewave inverter ..
i have no complete circuit about sinewave inverter but concept is simple
the concept is make high voltage DC(220v) by switching method and...
It is simple
if you are use the atmel at89c2051 chip
1'st read from senser by cpu port and then tx to PC by RS232 port.
the time count use by cpu interrupt.
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