发明名称 |
IMPROVED APPARATUS FOR PREVENTING RAT |
摘要 |
PROBLEM TO BE SOLVED: To stop the operation when detecting the abnormal state of a coil. SOLUTION: This rat-preventing apparatus generating intermittent pulsed electromagnetic field through one or more coils CL1 leads the pulsed electromagnetic field to a power line in a building through each magnetic core coupled with the coil. A microprocessor IC1 is connected to the coil(s) to automatically detect the cycle rate of line voltage and to precisely control a coil-switching circuit. The microprocessor IC1 can detect the abnormality of the coil(s) such as short-circuit or open-circuit by being provided with coil supervisory signals. When the above abnormality was detected, the microprocessor IC1 disconnects control signals to the coil CL1 and an indicator LED1 until a normal state of the coil(s) is detected.
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申请公布号 |
JP2000333587(A) |
申请公布日期 |
2000.12.05 |
申请号 |
JP20000124603 |
申请日期 |
2000.04.25 |
申请人 |
GLOBAL INSTRUMENTS LTD |
发明人 |
CHARLES R PATTERSON;THOMAS D KLEIN JR |
分类号 |
A01M29/00;A01M31/00;G05B9/02;H05C1/04;(IPC1-7):A01M29/00 |
主分类号 |
A01M29/00 |
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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