Patent ID: 8134298

Claim:
A decorative light string device, comprising: a power plug receiving AC (Alternating Current) power, a tail socket coupled to said power plug, and a LED (Light Emitting Diode) string with one end thereof coupled to said power plug and another end thereof coupled to said tail socket, wherein said power plug has a first diode and a first charging capacitor coupled to said first diode to define a first charging polarity thereacross; and said tail socket has a second diode and a second charging capacitor coupled to said second diode to define a second charging polarity opposite said first charging polarity thereacross, each of said first and second diodes having an node and cathode terminals, one of said first and second charging capacitors being coupled to said LED strings and the cathode terminal of said diode corresponding thereto, and the other of said first and second charging capacitors being conversely coupled to said LED string and the anode terminal of said diode corresponding thereto, whereby a DC (Direct Current) voltage substantially twice a peak voltage of said AC power voltage, is generated across said LED string; and, wherein said first capacitor, said first diode, said second capacitor, and said second diode are directly coupled to said LED string.