CH589889B5CH444574ACH444574ACH589889B5CH 589889 B5CH589889 B5CH 589889B5CH 444574 ACH444574 ACH 444574ACH 444574 ACH444574 ACH 444574ACH 589889 B5CH589889 B5CH 589889B5
Authority
CH
Switzerland
Application number
CH444574A
Original Assignee
Seiko Instr & Electronics
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3818973Uexternal-prioritypatent/JPS49138769U/ja
Priority claimed from JP3818873Uexternal-prioritypatent/JPS49138768U/ja
Application filed by Seiko Instr & ElectronicsfiledCriticalSeiko Instr & Electronics
Publication of CH589889B5publicationCriticalpatent/CH589889B5/xx
G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
G04F5/063—Constructional details
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
H03H9/21—Crystal tuning forks
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Physics & Mathematics
(AREA)
General Physics & Mathematics
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Chemical & Material Sciences
(AREA)
Crystallography & Structural Chemistry
(AREA)
Acoustics & Sound
(AREA)
Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits
(AREA)