Patent ID: 7439815
Filing Date: 2008-10-21
Classification: B06B

Abstract:
1. A method for operating an ultrasound oscillation system ( 1 ) including an ultrasound oscillator and components forming therewith an oscillation circuit, said method comprising the steps of: for generating an excitation current, applying an excitation voltage to the ultrasound oscillation circuit ( 1 ) whose frequency is adjustable for operating the ultrasound oscillation system ( 1 ) at a predetermined operating point (AP), wherein, with the switching on of the ultrasound oscillation system ( 1 ), the frequency is changed starting out with a starting frequency (f start ) until the operating point (AP) is reached, And, upon switching the ultrasound oscillation system ( 1 ) off, recording the frequency of the excitation voltage and using the recorded value for determining the starting frequency (f start new ) when the ultrasound oscillation system is switched on the next time.