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Rat Repeller Experiment Result,
also use for Bat, Cockroch and Mosquito
This experiment was done by my student Hendi Andrianto and me as supervisor. It has final project to observervation of some Rat, Bat, Cricket and Mosquito. The Setup experiment using Signal Generator, driver amplifier and Piezzo. The signal generator swap to range sound frequency 340 Hz increase up to that animal (Rat, bat, cricket and mosquito) and then get the data of frequency value that made animal annoyance.
The frequency that make annoyance of that animal then be applied as electronic circuit as simple using IC LM 555 to produce that frequency and the result is:
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