JPS55166052A - Method of detecting oscillation leakage of crystal resonator - Google Patents
Method of detecting oscillation leakage of crystal resonatorInfo
- Publication number
- JPS55166052A JPS55166052A JP7447679A JP7447679A JPS55166052A JP S55166052 A JPS55166052 A JP S55166052A JP 7447679 A JP7447679 A JP 7447679A JP 7447679 A JP7447679 A JP 7447679A JP S55166052 A JPS55166052 A JP S55166052A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- oscillation
- produces
- amplitude
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To enable detection of unstable resonator due to oscillation leakage in several seconds by rectifying the oscillation output from the resonator through a full-wave rectifying circuit, then introducing one output through a peak detector circuit into a comparator circuit together with other output and detecting the variation amount of amplitude of the output.
CONSTITUTION: A crystal resonator 1 is mounted at an oscillator circuit 2, and power supply voltage 3 is supplied thereto to start oscillating of the oscillator circuit 2. The output f1 from the circuit 2 is applied to a full-wave rectifier circuit 4, which produces an output f2 in stable state and produces an output f3 in unstable state. When one output of the circuit 4 is applied to a peak detector circuit 5, the circuit 5 produces the same output f2 as normal oscillation time. When the output from the circuit 5 is applied to a comparator circuit 6 together with other output from the circuit 4, the circuit 6 can detect the presence or absence of variation amount of amplitude. When the power supply voltage 3 of the oscillator circuit is variable and the voltage is raised, the oscillated amplitude of the crystal resonator is increased to feasibly cause oscillation leakage. Accordingly, the oscillation leakage occurring time is shortened to increase the variation amount of the oscillation so as to readily detect it.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7447679A JPS55166052A (en) | 1979-06-13 | 1979-06-13 | Method of detecting oscillation leakage of crystal resonator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7447679A JPS55166052A (en) | 1979-06-13 | 1979-06-13 | Method of detecting oscillation leakage of crystal resonator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55166052A true JPS55166052A (en) | 1980-12-24 |
Family
ID=13548348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7447679A Pending JPS55166052A (en) | 1979-06-13 | 1979-06-13 | Method of detecting oscillation leakage of crystal resonator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55166052A (en) |
-
1979
- 1979-06-13 JP JP7447679A patent/JPS55166052A/en active Pending
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