发明名称 |
Power supply negative phase detecting circuit |
摘要 |
<p>A power supply negative-phase detecting circuit (10) for electronic equipment (12) using a three-phase AC power supply source includes a pulse generator (13) for generating a first pulse indicating the phase difference between any pair of two phases of three-phase AC power to be supplied to the electronic equipment and a second pulse indicating the phase difference between another pair of two phases of the three-phase AC power, a differentiating circuit (25) for generating a third pulse from the second pulse in synchronism with the rise-up of the second pulse so that the third pulse has a pulse width smaller than the phase difference between the first and second pulses, and a switching unit (14) for subjecting the first pulse and the third pulse to OR operation and turning on/off the power supply to be supplied to the electronic equipment on the basis of the OR operation result of the first and third pulses. <IMAGE></p> |
申请公布号 |
EP1180840(B1) |
申请公布日期 |
2014.09.03 |
申请号 |
EP20010118266 |
申请日期 |
2001.07.30 |
申请人 |
SANYO ELECTRIC CO., LTD.;SANYO ELECTRIC AIR CONDITIONING CO., LTD. |
发明人 |
OOHASHI, EIJI |
分类号 |
G01R29/16;H02H7/097;H02H3/34;H02H11/00 |
主分类号 |
G01R29/16 |
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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