Abstract:
A motor control device includes a circuit board having a control circuit controlling electric power to be supplied to a motor, a base fixedly supporting the circuit board, a flexible printed circuit supplying electric power to the motor, a pin terminal disposed on the circuit board, being electrically connected with the control circuit, a dummy pin terminal disposed on the circuit board, being electrically free from the control circuit, a wiring pattern land disposed on the FPC, being electrically connected with the pin terminal, and a dummy wiring pattern land disposed on the FPC, being connected with the dummy pin terminal.
Abstract:
A component-embedded substrate includes an electrically insulating base (11) of resin, an electric or electronic embedded component (8) and a dummy embedded component (7) both embedded in the insulating base (11), a conductor pattern (18) formed on at least one side of the insulating base (11) and connected directly to or indirectly via a connection layer (6) to the embedded component (8) and the dummy embedded component (7), and a mark (10) formed on a surface of the dummy embedded component (7) and used as a reference when the conductor pattern (18) is formed, whereby positional accuracy of the conductor pattern (18) relative to the embedded component (8) can be improved.
Abstract:
To provide a substrate mounting structure with which reliability can be improved. This substrate mounting structure includes an ACF (2) disposed on a surface (1a) of a glass substrate (1) and SMDs (3) mounted on the surface (1a) of the glass substrate (1) via the ACF (2) and disposed in an SMD mounting region (10a) on the surface (1a) of the glass substrate (1). Then, dummy components (4) are respectively disposed in a region adjacent to one side of the SMD mounting region (10a) and in a region adjacent to the other side thereof.
Abstract:
The invention provides a safety unit integrated on a PCB (printed circuit board) and the PCB, and pertains to the technical field of circuit protecting device. The safety unit comprises: first electrode terminals; copper wire connected to the first electrode terminals at both ends respectively; an insulating paint film covering the copper wire; a chip fixed resistor disposed on the insulating paint film; and second electrode terminals connected to both ends of the chip fixed resistor respectively; wherein the first electrode terminals, the second electrode terminals and the copper wire are firmly pressed to be fixed onto the substrate of the printed circuit board. The safety unit provided by the invention possesses such characteristics as being simple in structure, low in cost and small in volume.
Abstract:
An electronic module with an integrated electromagnetic shield using surface mount shield wall components has been disclosed. Each surface mount shield wall component provides side shielding of the circuitry within the overmolded electronic module and provides an exposed conductive shield wall section to which a top conductive shield can be applied. By including the shield structure as part of the overmolded electronic module, the need for a separate shield and separate process steps for installing the separate shield can be eliminated. Each surface mount shield wall component comprises a non-conductive portion that provides stability during a reflow soldering process, but at least a sacrificial portion of the non-conductive portion can be removed to reduce the amount of area occupied by the overmoldable shield structure.
Abstract:
A component crimping apparatus control method which enables a measuring tool to directly measure a temperature of a part pressed by a pressing head. The component crimping apparatus control method is applied to a component crimping apparatus which crimps a component onto a plate-shaped workpiece, and causes a measuring tool shaped identically as the workpiece to measure a temperature or a pressure of a pressed part in a pressing process of pressing a component onto the workpiece using a heated pressing head. The method includes acquiring information indicating whether or not the measuring tool is held in the component crimping apparatus, and, in the case where the information indicating that the measuring tool is held is acquired, positioning the measuring tool identically as the workpiece, and executing the pressing process on the component to be attached to the measuring tool after the positioning.
Abstract:
Dummy data wires or PCB tracks are employed that run close to and parallel with the wires or tracks that carry the actual data between the card and the microprocessor. These dummy data tracks or wires are driven with dummy random data at a similar data rate to that used on the real data track(s) or wire(s). As the dummy tracks or wires are close to the “real” data tracks or wires and the dummy data is random, attempts to capacitively sense the actual data will be disrupted. To counter this method of detection the dummy data track may be connected to loads (resistive, capacitive or both) to ensure that current flows when dummy data is applied to the tracks. The loads may be selected such that the current flows are similar to those in the real data track. This is achieved by determining the terminating impedances on the real data track and using similar values on the dummy data tracks. Or, the strategy may be to ensure that the current flow in the dummy data tracks are much higher than the real data track current, in which case the total magnetic field will be dominated by the dummy data and the “real” signal will be “drowned out” by the dummy data signals.
Abstract:
An apparatus tool for filling vias in a product greensheet and/or repairing vias in a product greensheet. The apparatus tool utilizes a transfer greensheet having filled vias in a fixed array, which vias are punched into the product greensheet to either repair or fill the via of the product greensheet. The apparatus tool employs position determining means such as a camera, a punch head and a corresponding punch die and an activating means to activate the punch head to punch the transfer greensheet via to fill the product greensheet via. The transfer greensheet has a fixed array of filled vias and a transfer greensheet station employs a fixed plate having a plurality of vacuum ports positioned in the non-via areas of the transfer greensheet which secures the transfer greensheet during the repair or fill method. The product greensheet is held by a vacuum plate.
Abstract:
An electronic device, and associated method, provided with a circuit board (10), with a set of input contacts (IN/COM), a set of output contacts (OUT/COM) and an electrical circuit (18) connected between the input contacts (IN/COM) and the output contacts (OUT/COM) and a controller. The controller carries out a real-time test of the circuit board using a test signal introduced into the electrical circuit, the electrical circuit (18) being designed as a passive network having a characteristic transfer function and provided with at least two separate partial circuits (18′, 18″) wherein the separate partial circuits are electrically connected in the assembled state by cooperation with at least one of: at least one device components and/or assembly components (181).
Abstract:
There is provided a master glass having a structure capable of preventing damage caused by static electricity. The master glass is a substrate on which a deposition process is experimentally performed by being experimentally loaded loading the master glass into a deposition apparatus before starting the deposition process of the substrate for electronic devices. In one embodiment, a master glass includes first conductive patterns and a second conductive pattern. The first conductive patterns are formed to correspond to a deposition pattern required in a substrate for electronic devices. The second conductive pattern electrically connects all the first conductive patterns to one another.