| 摘要 |
Safety appparatus for sensing an electrically powered device connected to an AC power source to prevent the start-up of the device upon power restoration when the power device is in its "ON" operative condition includes a current sensing circuit that is responsive to reconnection of such a load to prevent the establishment of an electrical circuit path through the device. Included are circuits for sensing the presence of the AC power and for the generation of the sensing current are also presented.
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