Title:
TEST EQUIPMENT FOR PIEZOELECTRIC TRANSDUCER
Document Type and Number:
Japanese Patent JP3647903
Kind Code:
B2
Abstract:
PURPOSE: To provide a test equipment which can test a piezoelectric transducer used in an air back system of ear or the like, on the spot.
CONSTITUTION: The test equipment comprises a piezoelectric transducer 7, a means in a physical system, for deforming the piezoelectric element 7a, a test signal circuit 8 for generating a sounding electric signal for characterizing the functional condition of the piezoelectric element 7a, by connected with the piezoelectric element 7a to be instantaneously energized, for deforming the piezoelectric element 7a, and mechanically rumbling the piezoelectric element 7a, and a test response circuit 7c for determinating the function of the piezoelectric element 7a in response to the sounding electric signal.
Inventors:
Dee Mitchell Hanks
Rally esmets
Rally esmets
Application Number:
JP20282694A
Publication Date:
May 18, 2005
Filing Date:
August 04, 1994
Export Citation:
Assignee:
HEWLETT-PACKARD COMPANY
International Classes:
G01L25/00; G01P15/09; G01P21/00; G01R29/22; (IPC1-7): G01L25/00; G01R29/22
Domestic Patent References:
| JP4063069U | ||||
| JP4090943A |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Yasushi Endo
Arihara Koichi
Matsushima Tetsuo
Yasushi Endo