Patent ID: 7852609

Claim:
An electrical power strip comprising a base having at least one side and comprising at least one primary receptacle and at least one secondary receptacle; a power cord connected one side of the base and selectively connecting to an external power source; and a control module being mounted in the base, being connected to the power cord and comprising a first power input terminal and a second power input terminal connected to the power cord to obtain power; at least one primary contact set corresponding and being connected respectively to the primary receptacles and being connected in parallel to the first power input terminal; a voltage regulating circuit being connected to the power cord through the two power input terminals to output a regulated voltage; a current indicating circuit being connected to the second power input terminal, the primary contact set and the voltage regulating circuit to output direct current; a comparator having an output, being connected to the voltage regulating circuit and the current indicating circuit to check for the existence of the regulated voltage and the direct current and when both are present, outputting a control signal; a driving circuit being connected to the two power input terminals; at least one secondary contact set corresponding and being connected respectively to the secondary receptacles in parallel and connected to the second power input terminal and the driving circuit; a delay circuit connected between the output of the comparator and the driving circuit to delay the control signal.