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ultrasonic 4047 ??

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ultrasonic 4047 ??

Postby habib_bw » Tue Dec 27, 2011 9:34 pm

hi there plz can anyone help???

my project is to make a fan stop if i come near the ultrasonic receiver/transmitter
my tools are (4047 ic) - opamp lm358 - comparator lm339n -and forsure the ultrasonic receiver/transmitter
can anyone show me how to make the circuit
12v battery
habib_bw
 
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