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
Application number
ES466877A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALCAZAR FABREGAT J L DEL
Original Assignee
ALCAZAR FABREGAT J L DEL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALCAZAR FABREGAT J L DEL filed Critical ALCAZAR FABREGAT J L DEL
Priority to ES466877A priority Critical patent/ES466877A1/en
Publication of ES466877A1 publication Critical patent/ES466877A1/en
Expired legal-status Critical Current

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)
ES466877A 1978-02-10 1978-02-10 Improvements in electronic alarm provisions. (Machine-translation by Google Translate, not legally binding) Expired ES466877A1 (en)

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)

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