| 摘要 |
A current-transformed power source connecting circuit device comprises a power source plug-in, in connection with an external power source; a current transformer, having a primary and a secondary windings, the primary winding of which is connected in series to a current path of the power source plug-in for detection of a current; a main socket, capable of connecting externally to a main electrical apparatus, one end of which is connected to the current transformer; a rectifying means, in connection with the secondary winding of the current transformer, for rectification of a current from the current transformer; a switching means, for receiving a voltage from the rectifying means, which is switched on at a time that the received voltage is sufficient and switched off at a time that the voltage is insufficient; and at least one subsidiary socket, for connecting with the switching means and parallel-connection with the main socket, capable of connecting to a peripheral electrical apparatus.
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