JPS5619207A - Tuning fork oscillator having steady amplitude - Google Patents

Tuning fork oscillator having steady amplitude

Info

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
Application number
JP9523279A
Other languages
Japanese (ja)
Other versions
JPS617042B2 (en
Inventor
Takuya Hosoda
Yasuo Nihei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ando Electric Co Ltd
Original Assignee
Ando Electric Co Ltd
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
Application filed by Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Priority to JP9523279A priority Critical patent/JPS5619207A/en
Publication of JPS5619207A publication Critical patent/JPS5619207A/en
Publication of JPS617042B2 publication Critical patent/JPS617042B2/ja
Granted legal-status Critical Current

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
JP9523279A 1979-07-26 1979-07-26 Tuning fork oscillator having steady amplitude Granted JPS5619207A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196353U (en) * 1986-06-02 1987-12-14

Also Published As

Publication number Publication date
JPS617042B2 (en) 1986-03-04

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