Preliminary Study of Ultrasonic Generator Design Based on Microcontroller
DOI:
https://doi.org/10.35895/rf.v5i1.18Keywords:
Cavitation, Frequency, Ultrasonic GeneratorAbstract
Ultrasonic waves have been used in various fields such as cleaning, purification, and homogenization of particles by cavitation in liquid mediums. Cavitation is the formation, growth, and destruction of micro-sized gas bubbles. In this study, an ultrasonic generator based on an Arduino microcontroller has been designed. This research aims to produce square waves by utilizing the PWM method from Arduino Uno, where the frequency and duty cycle generated can be changed according to user needs. The method used in this study is an experimental method with components consisting of Arduino Uno, Mono Digital Audio Amplifier TPA3118, Power Supply 12 V, and Ultrasonic Transducer 40 kHz 60 W. Frequency and duty cycle are regulated using push buttons. The Arduino wave output will be amplified using an amplifier which is then used to produce the ultrasonic transducer. In the test of the generators made, several variations of duty cycles of 15%, 25%, 50%, 75%, and 85% were used. The result of this study is that ultrasonic generators can produce output frequencies of up to 58 kHz with error values of 0.83%, 0.97%, 0.92%, 0.70%, and 15% for each duty cycle.
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