The degree thesis is proposed to design and build devices that used to chase squirrels in the Park, Durian to help minimize damage from squirrels to eat a bite of nationals Park. We therefore devised a chasing squirrels with high frequency ultra sonic (Ultrasonic Generator Sweepable) frequency is used by ultra sonic. In the frequency range 20-60 kilohoenta kilohoenta by an internal circuit consists of the circuit determines the frequency (Frequency Scanner) frequency generator circuit (Frequency Generator) and output circuit h-pool suppliers file mopri (Push-Pull Amplifier) is defined by the frequency, select the values that cause the frequency to a frequency generator circuit and sent to drive the ultra-khotran ultrasonic sensor pigtail sadio solo electronic khotri which is used for high frequency signal distribution, ultra sonic.
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