发明名称 |
PHASE DIFFERENCE DETECTOR |
摘要 |
PURPOSE:To detect whether two elecricity quantities are within a specified phase difference range or not without errors and without any restriction on sampling frequencies by providing a sampling circuit of two input a.c. electricity quantities alpha,beta an A/D converting circuit and an arithmetic circuit. |
申请公布号 |
JPS5387277(A) |
申请公布日期 |
1978.08.01 |
申请号 |
JP19770001164 |
申请日期 |
1977.01.11 |
申请人 |
TOKYO ELECTRIC POWER CO;TOKYO SHIBAURA ELECTRIC CO |
发明人 |
HITOI YOSHIJI;MITANI IZUMI |
分类号 |
G01R25/00;H02H3/26;H02H3/38 |
主分类号 |
G01R25/00 |
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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