JPS54158196A - Piezoelectric acoustic device - Google Patents
Piezoelectric acoustic deviceInfo
- Publication number
- JPS54158196A JPS54158196A JP6737278A JP6737278A JPS54158196A JP S54158196 A JPS54158196 A JP S54158196A JP 6737278 A JP6737278 A JP 6737278A JP 6737278 A JP6737278 A JP 6737278A JP S54158196 A JPS54158196 A JP S54158196A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- electrode
- generated
- transistor
- feedback
- 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
- Piezo-Electric Transducers For Audible Bands (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
PURPOSE: To obtain a self-oscillation device featuring the steady operation and large output by combining the piezoelectric element containing the driving electrode and the feedback electrode, the transistor and the transformer each.
CONSTITUTION: With make of the power supply, transistor 20 conducts immediately to supply the current to coil 23. And the voltage is generated at boosting coil 24 to be applied to driving electrode 14. Accordingly, piezoelectric oscillator 13 is bent, and thus the feedback signal of the negative potential is generated at feedback electrode 15 to make transistor 20 nonconductive. As a result, the adverse electromotive force is generated at coil 23 and accordingly at coil 24. Thus, oscillator 13 is bent oppositely to the former case. After this, the above action is repeated. Here in order to secure the steady and large-output self-oscillation, the area ratio must be about 1/4W4 between the driving electrode and the feedback electrode.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53067372A JPS5832392B2 (en) | 1978-06-05 | 1978-06-05 | piezoelectric acoustic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53067372A JPS5832392B2 (en) | 1978-06-05 | 1978-06-05 | piezoelectric acoustic device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54158196A true JPS54158196A (en) | 1979-12-13 |
JPS5832392B2 JPS5832392B2 (en) | 1983-07-12 |
Family
ID=13343108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53067372A Expired JPS5832392B2 (en) | 1978-06-05 | 1978-06-05 | piezoelectric acoustic device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832392B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56160026U (en) * | 1980-04-25 | 1981-11-28 | ||
JPS5885887U (en) * | 1981-12-07 | 1983-06-10 | ソニー株式会社 | piezoelectric vibrator |
-
1978
- 1978-06-05 JP JP53067372A patent/JPS5832392B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56160026U (en) * | 1980-04-25 | 1981-11-28 | ||
JPS5885887U (en) * | 1981-12-07 | 1983-06-10 | ソニー株式会社 | piezoelectric vibrator |
Also Published As
Publication number | Publication date |
---|---|
JPS5832392B2 (en) | 1983-07-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52114915A (en) | Dc-dc converter | |
JPS5528680A (en) | Oscillation circuit | |
JPS55109003A (en) | Oscillation circuit | |
JPS5527014A (en) | Ultrasonic wave atomization excitation circuit | |
JPS54158196A (en) | Piezoelectric acoustic device | |
JPS5293257A (en) | Oscillator | |
JPS5320555A (en) | Constant current circuit | |
JPS54145031A (en) | Ultrasonic liquid atomizer | |
JPS57182620A (en) | Water detecting circuit | |
JPS5533353A (en) | Channel selection device for receiver | |
JPS5586378A (en) | Switching device for power supply | |
JPS553625A (en) | Magnet driving circuit | |
JPS5515511A (en) | Constant current circuit | |
JPS56105516A (en) | Direct current regulated power supply | |
JPS5333347A (en) | Power supply circuit of switching control type | |
JPS5630545A (en) | Ultrasonic humidifier | |
JPS5444423A (en) | Horizontal deflection circuit | |
JPS5318367A (en) | Bias circuit | |
JPS54117663A (en) | Amplifier | |
JPS5467652A (en) | No interruption dc power supply apparatus | |
JPS55125078A (en) | Switching power supply | |
JPS5469945A (en) | Oscillator circuit | |
JPS5639608A (en) | Current miller circuit | |
JPS55133671A (en) | Switching power supply device | |
JPS5552124A (en) | Power supply circuit |