| 摘要 |
An electric safety circuit for use with an electric receptacle includes a relay and contacts in which power from a mains is supplied through the contacts to the receptacle only when the contacts are closed; a transistor for controlling the relay to open or close the contacts; an enabling device for supplying an enabling signal to the transistor to close the contacts when a plug of an electrically connected device is inserted into the receptacle, the electrically connected device is turned on, and there is no electrical contact by a person with the power supplied to the electrically connected device; and a disabling device for supplying a disabling signal to the transistor to open the contacts when there is electrical contact by a person with the power supplied to the electrically connected device.
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