公开(公告)号：DE50010627D1

公开(公告)日：2005-08-04

申请号：DE50010627

申请日：2000-08-29

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： MORALES SERRANO FRANCISCO ,  LAUTER JOSEF ,  REICHINGER CHRISTIAN

IPC: B06B1/06 ,  B26B19/28 ,  G11B7/085 ,  G11B21/02 ,  H01L41/04 ,  H01L41/09 ,  H02N2/06

Abstract: The device has a bimodal piezoelectric resonator with at least two control electrodes for driving the resonator in different directions, a drive circuit for delivering control signals to the control electrodes and a regulating circuit for the control signals. When one control electrode is driving the resonator in one direction, the other is delivering a feedback signal to the regulating circuit. Independent claims are also included for an electric razor and for an electronic device for reading disc-shaped media, esp. CDs and DVDs.