JPH0139595B2 - - Google Patents
Info
- Publication number
- JPH0139595B2 JPH0139595B2 JP57210025A JP21002582A JPH0139595B2 JP H0139595 B2 JPH0139595 B2 JP H0139595B2 JP 57210025 A JP57210025 A JP 57210025A JP 21002582 A JP21002582 A JP 21002582A JP H0139595 B2 JPH0139595 B2 JP H0139595B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- piezoelectric vibrator
- self
- piezoelectric
- circuit
- 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.)
- Expired
Links
- 239000002184 metal Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000002902 bimodal effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57210025A JPS58111987A (ja) | 1982-11-29 | 1982-11-29 | 圧電式警報器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57210025A JPS58111987A (ja) | 1982-11-29 | 1982-11-29 | 圧電式警報器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58111987A JPS58111987A (ja) | 1983-07-04 |
| JPH0139595B2 true JPH0139595B2 (en]) | 1989-08-22 |
Family
ID=16582566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57210025A Granted JPS58111987A (ja) | 1982-11-29 | 1982-11-29 | 圧電式警報器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58111987A (en]) |
-
1982
- 1982-11-29 JP JP57210025A patent/JPS58111987A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58111987A (ja) | 1983-07-04 |
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