How to convert ultrasonic amplitude and power?

The amplitude value and power of the ultrasonic generator can be converted from the amplitude (A) to the amplitude decibel value (A_dB) by the following formula :A_dB = 20 × log10(A/A0), where A represents the amplitude and A0 is the reference value of the amplitude (usually 1um).

With this formula, the amplitude value can be converted from the original unit to the decibel unit.

Power (P)and power decibel value (P dB) conversion:

P_dB=10 x log10(P/PO)

Where P represents power and PO is the reference value of power (usually lW). With thisformula, the power value can be converted from the original unit to the decibel unit.

It should be noted that these formulas are based on the logarithmic relationship for conversion,so in practical application, it is necessary to pay attention to the selection and conversion of units.

In addition, the power of the ultrasonic generator can also be calculated by other formulas, such as P=(πxfxA~2ΔT)/(2x p), where P represents the output power of the ultrasonic generator,f representsthe ffequency of the ultrasonic wave.

A represents the amplitude of the ultrasonic wave, e represents the dielectric constant of the medium, orepresents the conductivity of the medium, AT represents the propagation time ofthe ultrasonic wave,and p represents the density of the medium. However, this formula is more complex, contains morephysical parameters, and needs to be selected and used according to specific application scenarios.