摘要:
There is provided a multilayer coil component in which the stress concentration at an overlapped area, such as the area between a pad area and a via-hole conductor, is mitigated to obtain preferable characteristics and troubles such as a short-circuit failure and a mounting failure are eliminated. A method for fabricating the multilayer coil is also provided. In the multilayer coil component, ceramic layers (1) and coil conductors (11) are stacked each other and pad areas (12) formed at the end of the coil conductors (11) are interlayer-connected through via-hole conductors (13) to form a spiral coil. The thickness of the pad areas (12) is formed thinner than that of the coil conductors (11), thereby mitigating the concentration of the stress at the overlapped areas between the pad areas (12) and the via-hole conductors (13).
摘要:
Method for building a device (1) having fluidic and electrical functions, comprising: mounting a building part (2) with fluidic and electrical functions on a substrate (3) that is provided with a fluidic circuit (4); fluidically connecting the building part with the substrate; electrically connecting the building part with the substrate; and mechanically connecting the building part with the substrate, characterised in that: use is made of flip-chip technology; and a seal is made by means of a gasket (6). With such a method a hybrid microfluidic system can be built in which materials and processes for realizing the various connections (fluidic and mechanical and electrical) can be selected in principle independently of each other so the individual processes can be optimised independently of each other in a large measure. With the application of flip-chip technology great accuracy in the positioning of the building parts can be achieved. The electrical connection is made by means of a current material and a well-developed process. Because in principle conventional, available equipment and technology can be used, development and production costs can remain low.
摘要:
In a method, a first electrode is moved to contact with first paired ends of first paired conductor segments. Next, a second electrode is moved opposing the first paired ends Electric conduction is established between the first electrode and the second electrode via the first paired ends of the first paired conductor segments to weld the first paired ends of the first paired conductor segments based on the electrical conduction therebetween. Next, the second electrode is moved opposing second paired ends of second paired conductor segments while the first electrode is kept in contact with the first paired ends. Electric conduction is established between the first electrode and the second electrode via the welded first paired ends and the second paired ends to thereby weld the second paired ends of the second paired conductor segments based on the electrical conduction therebetween.
摘要:
A bobbin-less coil and a method of manufacturing the bobbin-less coil. In the method, a pair of disk-like guide members (65) and (66) are brought into contact with the axial both end faces of a conductor (61) wound in a coil shape by using a separable tool. Parts of the conductor (61) are engaged with engagement parts (65c) and (66c) formed around the pair of guide members (65) and (66) and the pair of guide members are energized in directions for moving them close to each other, and then the tool is separated from the center of the conductor (61). By this, the shape of the bobbin-less coil (46) in which the inner peripheral surface of the conductor (61) wound in the coil shape is exposed can be retained. Also, since the pair of disk-like guide members (65) and (66) are energized in the directions for moving them close to each other by utilizing the parts of the conductor (61), the need of a special material for energization can be eliminated.
摘要:
A tool and method for winding and forming a field coil for field assembly, such as a stator, includes separable tool halves defining a winding cavity therebetween. The winding cavity receives magnet wire that is wound therein, such as by rotating the tool or a winding nozzle. The magnet wire generally conforms to the shape of the winding cavity such that when the tool halves are separated, a field coil having a net shape is produced. Once the magnet wire is sufficiently deposited within the winding cavity, wires of the coil may be bonded together either through a resistive heating process such as by passing an electrical current through the coil or through other heating or chemical bonding methods to thereby maintain the net shape of the field coil once it is removed from the tool.
摘要:
A method of making a series of N resonant frequency tags, N being an integer greater than 1, with each of the N tags having a resonant frequency which differs from the resonant frequency of every other tag in the series by at least a predetermined minimum frequency range, the method comprising the steps of: forming N first conductive patterns, the first conductive patterns all being substantially the same and each first conductive pattern comprising an inductive element and a first land with a first end of the first land being connected to one end of the inductive element and a second end of the first land being spaced from the first end by a predetermined distance; separately forming N second conductive patterns, the second conductive patterns all being substantially the same and each second conductive pattern comprising a second land and a link element, the second land having a predetermined width; and sequentially securing a second conductive pattern to each of the first conductive patterns at a location so that the second land of each second conductive pattern overlies a portion of the first land of the corresponding first conductive pattern with a dielectric therebetween to establish the plates of a capacitive element for each resonant frequency tag, the location of each second conductive pattern relative to the first land of a corresponding first conductive pattern and thus the amount by which each second land overlies the first land being different for each resonant frequency tag of the series so that the capacitance of the capacitive element of each resonant frequency tag is different from the capacitance of the capacitive element of every other resonant frequency tag of the series by at least a minimum value to thereby cause each resonant frequency tag to resonate at a different frequency from every other resonant frequency tag of the series.