Abstract: An educational kit for teaching kids/beginners about designing electronic circuit is provided. The educational kit according to the current application comprises of; 1) a square hard board comprised of a stiff non- conductive material, 2) a steel plate encasing back side of the square board, 3) pluralities of various kinds of electronic components which have wire type leads/terminals for connection, 4) pluralities of small permanent magnets of circular shape, and 5) a separate manual wherein various electronic circuits are printed thereon. Pluralities of dents of circular shape and square shape are developed on the front side of the board to receive magnets and electronic components, respectively. Another embodiment of the hard board has pluralities of circular or square dents spaced with same intervals. The educational kit of the current application renders easy set up and change of the configuration of electronic circuits even for beginners and kids.

Abstract: An educational kit for teaching kids/beginners about designing electronic circuit is provided. The educational kit according to the current application comprises of; 1) a square hard board that is comprises of; a face board made of stiff non-conductive material, including but not limited to, plastic such as PVC (Poly vinyl chloride), wood, paper hard board, etc.; a brim made of the same material of the face board with 3 mm thickness and 2.5 cm width and a steel plate adhered to the back side of the square board with glue, 2) pluralities of various kinds of electronic components, such as resistor, capacitor, etc., which have wire type leads/terminals (5) for connection, 3) pluralities of small permanent magnets (4) of circular shape, 4) a part box (1-2) that holds the electronic components and the small permanent magnets, and 5) a separate manual (6) wherein various electronic circuits are printed.

Abstract: An educational kit for teaching kids/beginners about designing electronic circuit is provided. The educational kit according to the current application comprises of; 1) a square hard board comprised of a stiff non- conductive material, 2) a steel plate encasing back side of the square board, 3) pluralities of various kinds of electronic components which have wire type leads/terminals for connection, 4) pluralities of small permanent magnets of circular shape, and 5) a separate manual wherein various electronic circuits are printed thereon. Pluralities of dents of circular shape and square shape are developed on the front side of the board to receive magnets and electronic components, respectively. Another embodiment of the hard board has pluralities of circular or square dents spaced with same intervals. The educational kit of the current application renders easy set up and change of the configuration of electronic circuits even for beginners and kids.

Abstract: A lamp device includes a lamp, a socket, two magnetic electrodes, and two electrode boxes. The lamp comprises a bulb portion, a stem portion, and two magnetic contacts. The socket has a receptacle portion configured to accept the lamp. The two magnetic electrodes are disposed in the receptacle portion. Each of the two electrode boxes encloses each of the two magnetic electrodes. The magnetic electrode is free to move in the electrode box, and the magnetic electrode makes an electrical contact all the time. The lamp device may further comprise a guiding groove and an insulating wall. The guiding groove may be provided on a bottom surface of the lamp between the two magnetic contacts.

Abstract: A lamp device includes a lamp, a socket, two magnetic electrodes, and two electrode boxes. The lamp comprises a bulb portion, a stem portion, and two magnetic contacts. The socket has a receptacle portion configured to accept the lamp. The two magnetic electrodes are disposed in the receptacle portion. Each of the two electrode boxes encloses each of the two magnetic electrodes. The magnetic electrode is free to move in the electrode box, and the magnetic electrode makes an electrical contact all the time. The lamp device may further comprise a guiding groove and an insulating wall. The guiding groove may be provided on a bottom surface of the lamp between the two magnetic contacts.

Abstract: An electrical wall outlet comprises an insulating cover portion, LEDs, a pair of magnetic electrodes, and insulating pads. The insulating cover portion encloses outlet electrodes of the wall outlet. The one or more outlet electrodes are ferrous. The LEDs are disposed on the front surface of the insulating cover portion. The pair of magnetic electrodes are disposed on the rear surface of the insulating cover portion, extending from a pair of common terminals of the LEDs that are disposed on the insulating cover portion, toward to one of the one or more outlet electrodes of the electrical wall outlet. The pair of magnetic electrodes are flexible to bend. Also, the pair of magnetic electrodes are resilient to recover when the insulating cover portion is plucked out. The insulating pads keeps the magnetic electrodes from touching parts other than the electrodes of wall outlet.

Abstract: An electrical wall outlet comprises an insulating cover portion, LEDs, and a pair of magnetic electrodes. The insulating cover portion encloses outlet electrodes of the wall outlet. The one or more outlet electrodes are ferrous. The LEDs are disposed on the front surface of the insulating cover portion. The pair of magnetic electrodes are disposed on the rear surface of the insulating cover portion, extending from a pair of common terminals of the LEDs that are disposed on the insulating cover portion, toward to one of the one or more outlet electrodes of the electrical wall outlet. The pair of magnetic electrodes are flexible to bend. Also, the pair of magnetic electrodes are resilient to recover when the insulating cover portion is plucked out.

Abstract: A night-glow color coded device system is provided. The system comprises an operational device, a case, first night-glow patches, second night-glow patches, and color codes. The case encloses and supports operational parts. The first night-glow patches are attached on at least one of the operational parts. The second night-glow patches are attached on the case in a vicinity of the operational parts, and the second night-glow patches indicates information on the operational parts. The color codes are provided on the case, and indicates at least one of the information. The first night-glow patches glow in a fluorescent light different from the second night-glow patches, and the information comprises operational status including ON and OFF of the operational device.

Abstract: A toilet include a toilet water tank, a flapper valve and a float pusher that supports closing the flapper valve properly and moves up and down in the toilet water tank by buoyancy force, a vertical guide that guides the float pusher in moving up and down along the vertical guide. The flapper valve is adapted to open for releasing water from a toilet water tank and to close for the purpose of refilling water in the toilet water tank. The float pusher includes a through hole, a bottom surface, a top surface, an outer surface connecting the top surface and the bottom surface and a water recess that is adapted to contain water. The water recess is provided on the top surface. The through hole is provided between the top surface and the bottom surface.