A Comparative Study Between Transformer Coupled Un-Tuned and Tuned Power Derivative Circuits for Ultrasonic Cleaning System

This paper discusses the challenges in developing a high-efficiency driver circuit for an ultrasonic cleaning system. The main issue lies in finding the suitable driver circuit and drive signal to ensure the correct frequency level for the ultrasonic transducer. This difficulty affects the removal of contaminants from inaccessible areas due to the inability to control cavitation bubbles. To address these problems, the authors studied the behaviour of piezoelectric transducers and designed driver and output power circuits. The LTspice XVII software was used to design and simulate various circuits, and it was found that trapezoidal pulses were the most suitable drive signals for avoiding power loss and achieving reasonable efficiency. The generated output frequency of 38.6 kHz provides sufficient energy for cleaning various small metallic items like jewellery, wristwatches, glasses, etc. The findings of this study will be helpful for those conducting research in this area in the future.