JPS5719687A - Mass wave receiver - Google Patents
Mass wave receiverInfo
- Publication number
- JPS5719687A JPS5719687A JP9434180A JP9434180A JPS5719687A JP S5719687 A JPS5719687 A JP S5719687A JP 9434180 A JP9434180 A JP 9434180A JP 9434180 A JP9434180 A JP 9434180A JP S5719687 A JPS5719687 A JP S5719687A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- current
- mass wave
- semiconductor element
- rectified
- 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.)
- Pending
Links
- 239000004065 semiconductor Substances 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/01—Measuring or predicting earthquakes
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To forecast effectively the occurrence of earthquakes by means of using a noninduction coil or a semiconductor element to transfer the mass wave into electric current. CONSTITUTION:A cross-type nonconduction coil B receives the mass wave, and an alternating current picked-up therefrom is applied to an LPF22 having a choke coil 20 and a capacitor 21 so as to remove the high-frequency wave. The alternating current is rectified by a bridge rectifier circuit 23, and the rectified current is supplied as a pulse current to a high speed recorder E to be recorded therein. A semiconductor element C may be used in place of the coil B' to obtain the similar resultant records.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9434180A JPS5719687A (en) | 1980-07-09 | 1980-07-09 | Mass wave receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9434180A JPS5719687A (en) | 1980-07-09 | 1980-07-09 | Mass wave receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5719687A true JPS5719687A (en) | 1982-02-01 |
Family
ID=14107582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9434180A Pending JPS5719687A (en) | 1980-07-09 | 1980-07-09 | Mass wave receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5719687A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007142984A (en) * | 2005-11-21 | 2007-06-07 | Pioneer Electronic Corp | Mounting bracket and speaker unit |
JP2009017102A (en) * | 2007-07-03 | 2009-01-22 | Sekisui House Ltd | Ceiling attachment structure for speaker, and speaker |
-
1980
- 1980-07-09 JP JP9434180A patent/JPS5719687A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007142984A (en) * | 2005-11-21 | 2007-06-07 | Pioneer Electronic Corp | Mounting bracket and speaker unit |
JP2009017102A (en) * | 2007-07-03 | 2009-01-22 | Sekisui House Ltd | Ceiling attachment structure for speaker, and speaker |
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