PT78908A - Resonant tag circuit and deactvador for use in an electronic security system - Google Patents

Resonant tag circuit and deactvador for use in an electronic security system

Info

Publication number
PT78908A
PT78908A PT78908A PT7890884A PT78908A PT 78908 A PT78908 A PT 78908A PT 78908 A PT78908 A PT 78908A PT 7890884 A PT7890884 A PT 7890884A PT 78908 A PT78908 A PT 78908A
Authority
PT
Portugal
Prior art keywords
circuit
deactvador
tag circuit
security system
electronic security
Prior art date
Application number
PT78908A
Other languages
Portuguese (pt)
Other versions
PT78908B (en
Original Assignee
Lichtblau G J
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
Priority claimed from PCT/US1984/000613 external-priority patent/WO1985004975A1/en
Application filed by Lichtblau G J filed Critical Lichtblau G J
Priority to PT78908A priority Critical patent/PT78908B/en
Publication of PT78908A publication Critical patent/PT78908A/en
Publication of PT78908B publication Critical patent/PT78908B/en

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  • Burglar Alarm Systems (AREA)

Abstract

The tag circuit has at least one resonant frequency and is sensed and electronically deactiveted to destroy the resonant characteristics at the detection frequency. The circuit is electronically deactivated by a breakdown mechanism operative to cause vaporisation of a conductive area or short-circuiting of capacitor plates. A deactivator provides electromagnetic energy at a resonant frequency of the circuit of sufficient energy to cause electrical breakdown and deactivation of the circuit.
PT78908A 1984-04-23 1984-07-13 Resonant tag circuit and deactvador for use in an electronic security system PT78908B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT78908A PT78908B (en) 1984-04-23 1984-07-13 Resonant tag circuit and deactvador for use in an electronic security system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1984/000613 WO1985004975A1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for use in an electronic security system
PT78908A PT78908B (en) 1984-04-23 1984-07-13 Resonant tag circuit and deactvador for use in an electronic security system

Publications (2)

Publication Number Publication Date
PT78908A true PT78908A (en) 1984-08-01
PT78908B PT78908B (en) 1986-06-03

Family

ID=34797911

Family Applications (1)

Application Number Title Priority Date Filing Date
PT78908A PT78908B (en) 1984-04-23 1984-07-13 Resonant tag circuit and deactvador for use in an electronic security system

Country Status (1)

Country Link
PT (1) PT78908B (en)

Also Published As

Publication number Publication date
PT78908B (en) 1986-06-03

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Legal Events

Date Code Title Description
NF3A Restitutio in integrum

Effective date: 19940421