发明名称 |
Method for detecting input ac voltage. |
摘要 |
<p>A rectified ac voltage which is not smoothed, is compared with a reference voltage directly, and a pulse is generated when the instantaneous value of the rectified ac voltage exceeds the reference voltage. Based on this pulse generation, a judgement is performed as to whether the ac voltage is reaching a predetermined value or not. These operations allow the abnormality of the ac voltage to be rapidly detected with improved accuracy.</p> |
申请公布号 |
EP0286282(A2) |
申请公布日期 |
1988.10.12 |
申请号 |
EP19880302665 |
申请日期 |
1988.03.25 |
申请人 |
FUJI ELECTROCHEMICAL CO.LTD. |
发明人 |
NAKAO, FUMIAKI;SHIMIZU, TOSHIHIRO;KATO, NOBORU |
分类号 |
G01R19/165 |
主分类号 |
G01R19/165 |
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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