发明名称 |
Utility monitor for detecting and storing power line disturbances |
摘要 |
A utility monitor for detecting and storing power line disturbances is provided which includes peak-voltage sensing means for over-voltages which provides an interrupt signal at the time of a strobe pulse indicative of a voltage rise above a preset threshold and which removes the interrupt signal when said peak voltage drops a preselected amount below the preset threshold value. A peak-voltage sensing means for under-voltages is also included for obtaining an interrupt output at the time of said strobe pulse indicative of a voltage drop below a preset threshold and for removing the interrupt output when said peak-voltage rises a preset amount above the preselected threshold value. A preselected number of cycles of said input sinewave voltage are stored before and after said interrupt.
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申请公布号 |
US4156280(A) |
申请公布日期 |
1979.05.22 |
申请号 |
US19760751575 |
申请日期 |
1976.12.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORP |
发明人 |
GRIESS, ROY K |
分类号 |
H02H3/24;G01R19/165;H02H3/04;H02H3/20;(IPC1-7):G01R19/30 |
主分类号 |
H02H3/24 |
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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