In sweep operations, the output frequency of the ultrasound generator is modulated around the central frequency, which can adjust itself on its own.

Various effects are produced by the change in speed and magnitude of the frequency modulation. The frequency can be modulated from once every umpteenth second to several hundred per second, with the variation range extending from several hertz to several kilohertz. The sweep may also be used to prevent damage to extremely delicate parts or in order to reduce the effects of the waves in the washing tanks. The sweep operation can also be extremely useful in facilitating the cavitation of terpenes and petroleum-based chemicals. A combination of the impulse and sweep operation can produce even better results when the cavitation of terpenes and petroleum-based chemicals is required.

Frequency and Range

Frequency and range are properties of sound waves. The animation below shows the frequency and range using the spiral model introduced earlier. If A is the basic sound wave, B, with reduced movement of the means (less intense compression and rarefaction) when the front of the wave passes, represents a sound wave with a smaller range or “noise”. C represents a higher frequency sound wave, indicated by the higher number of wave fronts passing a given point within a certain period of time.

A
B
C