What is an Ultrasonic Generator?

The central element of an ultrasonic cleaning system is the ultrasonic generator, the source that provides the electrical energy to the system's ultrasonic transducers. The job of ultrasonic generator is to receive and convert energy from the power source to the proper frequency, voltage, and amperage. Electrical current from the power line is transmitted at approximately 100 to 250 volts AC and a frequency of 50 or 60 Hz. The majority of ultrasonic cleaning systems require the ultrasonic generator to supply the ultrasonic transducer at a significantly higher voltage and the specific frequency intended for the ultrasonic cleaning system's operation.

Ultrasonic generator selection should be based on the specific cleaning requirements of the application so that the best results can be achieved. In addition to needing the power and frequency to match the transducer requirements, the cleaning tank must be able to accommodate the largest part to be cleaned. Additionally, the power, frequency, and the tank size must be appropriate for the type of contaminant and the mechanical strength of the parts involved in the cleaning application.

Thanks to technological advances, ultrasonic generators are capable of obtaining feedback from the transducers enabling them to maintain maximum ultrasonic cleaning results by adjusting frequency and power output.  When necessary, ultrasonic generators can provide customized variations in waveform, which optimizes the ultrasonic cleaning capability, but at the same time decreases the likelihood of parts damage during cleaning.

The proper frequency is essential for effective ultrasonic cleaning. Low frequencies result in a cleaning solution with large, active cavitation bubbles. Since the cleaning action produced by low frequencies is more powerful, this method is best for sturdy components that will not be damaged with hard surfaces that are not susceptible to pitting. Mid-range frequencies produce smaller cavitation bubbles resulting in a  gentler cleaning action. The highest frequency ranges are used for extremely delicate components such as medical components and electronic components.

When ultrasonic cleaning is required for an individual process involve the same types of parts, single frequency ultrasonic generators are typically used. Multi-frequency ultrasonic generators capable of producing numerous frequencies are also available for facilities that require ultrasonic parts cleaning for a variety of parts with differing characteristics.

CTG is your knowledgeable and experienced source for a diverse range of parts cleaning equipment, including a full line of high-performance ultrasonic cleaning equipment. Contact us today to discuss your parts cleaning needs.