Title:
【発明の名称】超音波モ-タの駆動装置
Document Type and Number:
Japanese Patent JPH0667224
Kind Code:
B2
Abstract:
In a driving circuit for a piezoelectric ultrasonic motor (23) supplying driving signal from an astable oscillator (51), which comprises an oscillation IC (49), a capacitor (48) and charge-discharge resistors (45, 46, 47), is controlled by controlling leakage current through a leakage resistor (47) to a point E, through controlling of the voltage of the point E by a temperature-dependent voltage producing circuit 52.
More Like This:
| JP2013223818 | PIEZOELECTRIC ACTUATOR AND ELECTRONIC APPARATUS |
| JPH1098889 | ULTRASONIC MOTOR DEVICE |
Inventors:
Kenichiro Takahashi
Noriyuki Harao
Hirozo Tagami
Noriyuki Harao
Hirozo Tagami
Application Number:
JP236587A
Publication Date:
August 24, 1994
Filing Date:
January 08, 1987
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H02N2/00; H01L41/04; H02N2/14; H03L1/02; (IPC1-7): H02N2/00
Attorney, Agent or Firm:
Akira Kobiji (2 outside)
Next Patent: FOUR-LIGHT-WAVE MIXED LIGHT SUPPRESSING CIRCUIT