发明名称 |
Apparatus for deactivating a surveillance tag |
摘要 |
A pulse source powers a wand-like probe with spaced contacts that is arranged to be applied to and drawn along the surface of a surveillance tag that contains a diode semiconductor with exposed terminals. When the probe contacts engage the diode terminals, current is passed through the diode sufficient to destroy its unidirectional conducting characteristics and thereby deactivate the tag. A cut-out circuit is included to prevent the passage of excessive current through the diode or damaging short-circuiting of the power amplifier output.
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申请公布号 |
US4318090(A) |
申请公布日期 |
1982.03.02 |
申请号 |
US19800201050 |
申请日期 |
1980.10.27 |
申请人 |
SENSORMATIC ELECTRONICS CORPORATION |
发明人 |
NARLOW, DOUGLAS A.;STEVENS, EUGENE |
分类号 |
G08B13/24;(IPC1-7):G08B13/24 |
主分类号 |
G08B13/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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