A Novel Driving Ultrasonic Atomizer Based on Class-E Amplification Circuits

In this paper, we propose a novel ultrasonic atomizer driving circuit based on Class-E power amplifiers. The introduced driving circuit adopts a Class-E radio frequency (RF) power amplifier with zero voltage switching, MOS transistor model AOD4130, driving chip model MIC4426, and 1.7 MHz resonant frequency atomizer. Besides, we also study the selection of RF choke in Class-E amplification circuits and the influence of the duty cycle of the driving signal on the atomization amount of the atomizer. Numerical simulations and hardware validations reveal that the inductance value of the RF choke is 100 μH and the ultrasonic atomizer with a duty cycle of 50% results in a promising atomization amount and high circuit efficiency.