JPS5619207A - Tuning fork oscillator having steady amplitude - Google Patents
Tuning fork oscillator having steady amplitudeInfo
- Publication number
- JPS5619207A JPS5619207A JP9523279A JP9523279A JPS5619207A JP S5619207 A JPS5619207 A JP S5619207A JP 9523279 A JP9523279 A JP 9523279A JP 9523279 A JP9523279 A JP 9523279A JP S5619207 A JPS5619207 A JP S5619207A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- output
- amplitude
- tuning fork
- feedback loop
- 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.)
- Granted
Links
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE: To always obtain the steady amplitude with no effect of the peripheral conditions, by giving the control to the amplifier for piezoelectric element via the rectifier, the DC amplifier and the reference voltage and then reducing the amplitude fluctuation of the feedback loop.
CONSTITUTION: Amplifier 4 has the output level which is increased and decreased by the voltage variation of the power supply, and receives the output of DC amplifier 6 in the form of the power supply voltage. As a result, the output of amplifier 6 decreases as the detection signal of piezoelectric element 2A increases. Thus the output level of amplifier 4 is reduced. And in the adverse case, the output level is increased to function to secure the constant detection signal of element 2A. And amplifier 4 gives the negative feedback loop to the positive feedback loop for connection of the oscillation in order to secure a constant amplitude of tuning fork oscillator 1. In case the polarity of reference voltage 7 is connected adversely, the output polarity of rectifier 5 and the input polarity of amplifier 6 are reversed respctively. As a result, a tuning fork oscillator can be obtained with the steady amplitude at all times and with no effect of the peripheral conditions.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9523279A JPS5619207A (en) | 1979-07-26 | 1979-07-26 | Tuning fork oscillator having steady amplitude |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9523279A JPS5619207A (en) | 1979-07-26 | 1979-07-26 | Tuning fork oscillator having steady amplitude |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619207A true JPS5619207A (en) | 1981-02-23 |
JPS617042B2 JPS617042B2 (en) | 1986-03-04 |
Family
ID=14132008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9523279A Granted JPS5619207A (en) | 1979-07-26 | 1979-07-26 | Tuning fork oscillator having steady amplitude |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619207A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62196353U (en) * | 1986-06-02 | 1987-12-14 |
-
1979
- 1979-07-26 JP JP9523279A patent/JPS5619207A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS617042B2 (en) | 1986-03-04 |
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