发明名称 |
CIRCUIT FOR ENERGIZING EAS MARKER DEACTIVATION DEVICE WITH DC PULSES OF ALTERNATING POLARITY |
摘要 |
A device for deactivating magnetomechanical EAS markers includes a storage capacitor (12) and a coil (10) for generating a deactivation field. A bridge arrangement of four switches (SW1-SW4) interconnects the coil (10) with the storage capacitor (12) and with circuit ground. The switches are controlled to apply a train of DC pulses to the coil (10) such that the pulses have alternating polarities and decreasing amplitudes.
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申请公布号 |
CA2338849(A1) |
申请公布日期 |
2000.02.24 |
申请号 |
CA19992338849 |
申请日期 |
1999.08.06 |
申请人 |
SENSORMATIC ELECTRONICS CORPORATION |
发明人 |
EASTER, RONALD B. |
分类号 |
G08B13/24;(IPC1-7):G08B13/14 |
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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