Title:
TUNING FORK TYPE CRYSTAL OSCILLATOR
Document Type and Number:
Japanese Patent JPS5492091
Kind Code:
A
Abstract:
PURPOSE: To prevent the oscillation of the 1st and 2nd higher harmonics regardless of the constitution of the oscillator circuit by providing the concavity at the prescribed area of the oscillator itself.
CONSTITUTION: An oblong concavity 7 is provided in the range of 0.65∼0.85 and in the range of 0.85∼0.95 each with the tip dof the tuning fork bar is set to 1 when the base part of the bar is set as the original point. As a result, the oscillation can be suppressed for the 1st and 2nd higher harmonics.
Inventors:
KOGURE SHIGERU
Application Number:
JP7078A
Publication Date:
July 20, 1979
Filing Date:
December 28, 1977
Export Citation:
Assignee:
SUWA SEIKOSHA KK
International Classes:
G04G3/00; G04C3/12; H03H9/21; H03H9/215; (IPC1-7): G04C3/00; G04C5/00; H03H9/14