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Ultrasonic Remote Control Circuit

This is a remote control circuit using ultrasonic signals. The Ultrasonic Remote Control Circuit is built around IC1 (NE 555). IC1 astable operating system is a multi-vibrator in the output of the amplifier IC1 is 40KHz.The complementary pair of transistors (Q1 and Q2) and transmitted by the ultrasonic transmitter K1. Switch S1 is used to activate the transmitter.Note:switch S1 can be a push

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