Abstract: The invention provides a slim type packaging structure with high heat dissipation, which is to provide a hole on the surface of a substrate, and then a die is placed inside the hole. Besides, a plurality of wire is separately connected from the die to the substrate. Alternatively, a heat-dissipating panel with good conductivity can be placed inside the hole, and then the die is placed on the heat-dissipating panel. Thus, after the substrate is soldered on the circuit board, a direct heat-dissipating path can be formed between the die and the circuit board; therefore, the die can dissipate heat without passing through the substrate. Hence, the slim type packaging structure with high heat dissipation provided by the invention can achieve double effects of good heat dissipation and package volume slimming as well as have the advantages of low cost and simple design.

Abstract: An anti-biofouling system adapted to be used for an underwater structure immersed in seawater is disclosed. The anti-biofouling system includes a conductive layer, comprising carbon fiber, graphite powder and binder, formed on a surface of the underwater structure for serving as an anode, a cathode, and a power supply for providing a current, thereby performing an electrolytic reaction for the anti-biofouling system such that a fouling organism is prohibited from attaching on the surface of the underwater structure.

Abstract: An anti-biofouling system adapted to be used for an underwater structure immersed in seawater is disclosed. The anti-biofouling system includes a conductive layer, comprising carbon fiber, graphite powder and binder, formed on a surface of the underwater structure for serving as an anode, a cathode, and a power supply for providing a current, thereby performing an electrolytic reaction for the anti-biofouling system such that a fouling organism is prohibited from attaching on the surface of the underwater structure.

Abstract: A replaceable cartridge type high speed nickel-cadmium battery charger comprising a base, a circuit board, an upper cover, and a replaceable charger cartridge, in which the base has a hollow interior space and a round hole in the middle; the circuit board with circuits on it is assembled within the hollow interior space of the base; the upper cover has a plurality of convectional radiation holes on the left side of its upper surface, a LED indicator at its left edge, and a replaceable charger cartridge chamber on the right side; and the replaceable charger cartridge has a battery chamber, two conductive metal plates at the front side and a lock hole on the bottom so as it can be placed in and removed from the charger cartridge chamber, and locked to the base by means of a bolt passing through the round hole in the middle of the base to the lock hole.