JPS5539453A - Self-oscillating circuit - Google Patents
Self-oscillating circuitInfo
- Publication number
- JPS5539453A JPS5539453A JP11311378A JP11311378A JPS5539453A JP S5539453 A JPS5539453 A JP S5539453A JP 11311378 A JP11311378 A JP 11311378A JP 11311378 A JP11311378 A JP 11311378A JP S5539453 A JPS5539453 A JP S5539453A
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- oscillation
- circuit
- minimum
- frequency
- 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 ensure the steady oscillation with the natural minimum frequency even with use of the piezoelectric element featuring several natural frequencies by installing the piezoelectric element connected in parallel to the phase advancer circuit.
CONSTITUTION: The phase advancer circuit consisting of resistance R3 and capacitor C2 is connected in parallel to piezoelectric element 6 to form the phase advance feedback circuit. The value of R3 and C2 are set so that the oscillation may be given to the oscillation frequency with the value approximate to the minimum natural frequency of element 6 when element 6 is removed. The impedance of the serial circuit of R3 and C2 is set near the minimum natural frequency to the level sufficiently larger than the impedance of the resonance point of element 6 and smaller than the impedance at the antiresonance point. Furthermore the impedance of the same serial circuit is set not to be so much larger than the impedance at the higher-order resonance point of element 6. As a result, the oscillation can always be steady at the minimum natural frequency.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11311378A JPS5539453A (en) | 1978-09-13 | 1978-09-13 | Self-oscillating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11311378A JPS5539453A (en) | 1978-09-13 | 1978-09-13 | Self-oscillating circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5539453A true JPS5539453A (en) | 1980-03-19 |
JPS6117363B2 JPS6117363B2 (en) | 1986-05-07 |
Family
ID=14603829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11311378A Granted JPS5539453A (en) | 1978-09-13 | 1978-09-13 | Self-oscillating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5539453A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009206646A (en) * | 2008-02-26 | 2009-09-10 | Fujitsu Ltd | Oscillation circuit |
-
1978
- 1978-09-13 JP JP11311378A patent/JPS5539453A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009206646A (en) * | 2008-02-26 | 2009-09-10 | Fujitsu Ltd | Oscillation circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6117363B2 (en) | 1986-05-07 |
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