ES466877A1 - Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding) - Google Patents
Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES466877A1 ES466877A1 ES466877A ES466877A ES466877A1 ES 466877 A1 ES466877 A1 ES 466877A1 ES 466877 A ES466877 A ES 466877A ES 466877 A ES466877 A ES 466877A ES 466877 A1 ES466877 A1 ES 466877A1
- Authority
- ES
- Spain
- Prior art keywords
- translation
- machine
- legally binding
- google translate
- electronic alarm
- 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
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
- Burglar Alarm Systems (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Improvements in the electronic alarm arrangements, characterized in that the alarm originates in a sensor part consisting essentially of an oscillating device whose capacity is formed by the object to be protected with respect to earth, so any variation of said capacity or of the impedance thereof, leads respectively to a modification of the frequency or voltage of the system, said modification being used through a selective filter, to give rise to the activation of an optical, acoustic or other alarm device. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES466877A ES466877A1 (en) | 1978-02-10 | 1978-02-10 | Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES466877A ES466877A1 (en) | 1978-02-10 | 1978-02-10 | Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES466877A1 true ES466877A1 (en) | 1978-10-01 |
Family
ID=8475458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES466877A Expired ES466877A1 (en) | 1978-02-10 | 1978-02-10 | Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES466877A1 (en) |
-
1978
- 1978-02-10 ES ES466877A patent/ES466877A1/en not_active Expired
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