Horn analyzer

A horn analyzer is a test instrument dedicated to determine the resonance and anti-resonance frequencies of ultrasonic parts such as transducers, converters, horns/sonotrodes and acoustic stacks, which are used for ultrasonic welding, cutting, cleaning, medical and industrial applications.

In addition, digital horn analyzers are able to determine the electrical impedance of piezoelectric materials, the Butterworth-Van Dyke (BVD) equivalent circuit and the mechanical quality fator (Qm).

In digital analyzers, frequency detection and impedance calculation are performed automatically through embedded software.

Horn analyzers are widely used by manufacturers of power ultrasonic equipment, to allow the proper tuning and quality control of sonotrodes, transducers and boosters.

[2] In an acoustic set, the parts act like narrow pass-band filters, and their central frequencies should be perfectly aligned to avoid heating losses and to improve energy transmission.