Abstract: A folding ladder includes a front frame, a rear frame, a pedal, and a locking mechanism for locking the pedal. The front frame is rotatably connected with the rear frame, and the pedal is rotatably connected with the front frame. The locking mechanism includes a hook member, a snap portion capable of being engaged with the hook member, and a control member that controls the engagement and/or disengagement of the hook member and the snap portion. The snap portion is disposed at the pedal, and the hook member is fixed to the rear frame. The folding ladder further includes a first elastic member and a second elastic member. When the folding ladder is unfolded, the snap portion and the hook member are located under an upper surface of the pedal, the control member is vertically and movably disposed on the pedal.

Abstract: A connection system is provided for modular luminaires, wherein the luminaires are each provided with at least one tapered pillar projecting from a back, the pillar having a top opening. A coupling arrangement is used for coupling the two luminaires together, in the form of a bridge having first and second tapered openings for fitting over the pillars. A sprung retaining clip projects within each opening for passing through the top opening and thereby gripping the pillar.

Abstract: Disclosed are a clock synchronization circuit, a control method, a printed circuit board and a communication device. The clock synchronization circuit includes an external reference signal processing module, a phase detector, a voltage control conversion module, a clock generator, and a first frequency divider.

Abstract: A supercapacitor contains the zwitterionic polymer hydrogel electrolyte. A change rate of a capacitance retention of the supercapacitor, relative to a specific area capacity at 25° C. is less than 25% at extreme temperature. When temperature is increased to 60° C. or reduced to ?30° C. the specific area capacity is changed to 178 mF cm?2 and 134 mF cm?2, which are 104% and 78% of that at 25° C. indicating an excellent electrochemical property at the extreme temperature.

Abstract: A connection system is provided for modular luminaires, wherein the luminaires are each provided with at least one tapered pillar projecting from a back, the pillar having a top opening. A coupling arrangement is used for coupling the two luminaires together, in the form of a bridge having first and second tapered openings for fitting over the pillars. A sprung retaining clip projects within each opening for passing through the top opening and thereby gripping the pillar.

Abstract: A supercapacitor contains the zwitterionic polymer hydrogel electrolyte. A change rate of a capacitance retention of the supercapacitor, relative to a specific area capacity at 25° C. is less than 25% at extreme temperature. When temperature is increased to 60° C. or reduced to ?30° C. the specific area capacity is changed to 178 mF cm?2 and 134 mF cm?2, which are 104% and 78% of that at 25° C. indicating an excellent electrochemical property at the extreme temperature.

Abstract: A heat dissipating structure of LED lamp includes a circuit driving board having LEDs array and a circuit controlling board; a heat-dissipating and light-reflecting aluminum sheet is provided on the upside of the circuit driving board, a heat-dissipating glue layer is attached to the underside of the circuit driving board, and a heat-dissipating aluminum sheet is attached to the other side of the heat dissipating glue layer. The said circuit controlling board can be wrapped with heat dissipating glue, so that the heat being produced during the operation of the line control board can be further dissipated.