Abstract: In accordance with the invention, a temperature compensating device comprises one or more integrated sheet thermistors. Because the sheet thermistors are relatively thick and integral with the substrate, they are less susceptible to changes in air temperature and to temperature gradients. Moreover, the sheet thermistors can be made smaller in area, permitting more compact, less expensive devices that exhibit improved high frequency performance. The devices can advantageously be fabricated using the low temperature co-fired ceramic (LTCC) process.

Abstract: An electrode comprises an electrode main body having a porosity, and the conductivity of the electrode main body at its part ranging from the arc running face to a stated depth is made higher than the conductivity at the section or the conductivity at the part ranging from the back surface to a stated depth. This brings about an improvement in circuit-break performance of a circuit breaker and also prevents the arc running face of the electrode main body from deteriorating.

Abstract: In a garment 10, 12 incorporating an electronic device such as a radio 16, a variable of the device, such as volume, is varied by the use of two cords 22, 24, the electrical resistance of each cord decreasing in accordance with an increase in tension applied to the cord; pulling one cord increases the volume of the radio and pulling the other cord decreases the volume. The stronger the pull, the faster the change in volume. The ends of the cords lie outside the garment and carry toggles 26, 28 for easy operation by a gloved hand. Alternatively the ends of the cord outside the garment may be connected to opposite ends of a manual grip 48.

Abstract: The present invention reveals an over-current protection apparatus comprising a first electrode plate, a second electrode plate, a third electrode plate, a conductive element and a high resistance material layer, where the high resistance material layer may contact the first electrode plate to form a conducting path, the conductive element is connected to the first electrode plate and the second electrode, the thermally expanded conductive element can cut off current, the high resistance material layer is connected to the third electrode plate and the second electrode plate, and the thermal expansion coefficient of the high resistance layer is less than that of the conductive element. By virtue of the thermal expansion of the conductive element due to an over-current, the first electrode plate is departed from the third electrode plate so as to enforce the current flows through the high resistance material layer for current reduction.

Abstract: A resistor for driving a motor for an air conditioner blower is provided, in which internal resistance bodies are stacked over one after another between insulation plates in the resistor, to accordingly reduce the volume of the entire of the resistor is reduced, and the resistance bodies are separated into a plurality of metal thin plates not a single plate and stacked over one after another, to thereby increase a line width. Also, a temperature fuse is disposed externally. The air conditioner fan blower motor driving resistor is obtained by stacking resistance bodies made of at least two metal thin plates over one after another. The resistance bodies are formed of an independent resistance body forming a second resistance body and a third resistance body on two separate thin plates, and another independent resistance body forming a first resistance body on another thin plate.

Abstract: The present invention includes electronic device workpieces, methods of semiconductor processing and methods of sensing temperature of an electronic device workpiece. In one aspect, the invention provides an electronic device workpiece including: a substrate having a surface; a temperature sensing device borne by the substrate; and an electrical interconnect formed upon the surface of the substrate, the electrical interconnect being electrically coupled with the temperature sensing device. In another aspect, a method of sensing temperature of an electronic device workpiece includes: providing an electronic device workpiece; supporting a temperature sensing device using the electronic device workpiece; providing an electrical interconnect upon a surface of the electronic device workpiece; electrically coupling the electrical interconnect with the temperature sensing device; and sensing temperature of the electronic device workpiece using the temperature sensing device.

Abstract: A variable resistor is constructed to reliably seal the space between a rotor and a substrate without insert-molding the substrate into a case, and to be produced at a very low cost. This variable resistor includes a hollow square-prism shaped case which is open at the top and the bottom, a substrate which is fitted into the lower opening of the case, and on the top surface of which a collector electrode and an arcuate resistor are provided, a rotor rotatably fitted into the upper opening of the case, a slider mounted on the bottom surface of the rotor and making sliding contact with the collector electrode and the resistor, an annular packing member disposed between the rotor and the substrate for sealing the space therebetween, terminals mounted on the substrate and electrically connected to the resistor and the collector electrode, and a metallic cover.

Abstract: A stackable ball grid array (BGA) or fine ball grid array (FBGA) semiconductor package particularly suitable for board-on-chip or chip-on-board applications in which a low-profile BGA or FBGA semiconductor package is needed. The stackable ball grid array (BGA) or fine ball grid array (FBGA) provides a semiconductor package that is capable of being burned-in and tested in a more efficient and cost-effective manner than prior known BGA or FBGA semiconductor packages. A high-density, low-profile memory module incorporating a plurality of the disclosed BGA or FBGA semiconductor packages in a stacked arrangement is further disclosed.

Abstract: A description is given of a passenger detector comprising a flexible support of insulating material, at least two electrode structures placed on said insulating substrate at a certain distance from each other, and a layer of semiconducting material placed above said electrode structures in an active zone of the detector. In conformity with the invention, said layer of semiconducting material has an internal resistance that varies with a deformation of said layer and said layer of semiconducting material is placed in intimate contact with said electrode structures.

Abstract: Disclosed is a highly reliable rotary sensor capable of preventing radial eccentricity of the rotation shaft and performing correct detection. The rotary sensor includes a rotating member having a rotation shaft, a rotation detecting device for detecting the rotation of the rotating member, a bearing having a shaft hole into which the rotation shaft is inserted and which rotatably supports the rotation shaft integrally with the rotating member, and a biasing device for imparting a biasing force in a thrust direction to the rotation shaft, wherein there is formed in the periphery of one end portion of the shaft hole a beveled portion inclined so as to be outwardly flared in the radial direction A of the shaft hole, and wherein the rotating member 11 is provided with a tapered surface corresponding to the beveled portion, the tapered surface being held in press contact with the beveled portion by the biasing force of the biasing device.

Abstract: An electromechanical program timer provides at least a section with a slower timing speed besides a major timing speed. The timer includes a driving motor rotationally drives a driving shaft. A driving gear and an eccentric shaft are formed on the driving shaft for driving a cam disk through a main driven gear and via a pushing pawl to a driven ratchet respectively. The main driven gear includes at least a missing gear portion where the driving gear is free from driving the main driven gear, and the pushing pawl and the driven ratchet take place. The driving shaft engages and rotates the cam disk through the main driven gear in a major timing speed. While at the missing gear portion, the eccentric shaft oscillates the pushing pawl and drives the cam disk through the driven ratchet step by step in a reduced timing speed.

Abstract: The present invention provides for a flip chip resistor having a substrate having opposite ends, a pair of electrodes formed from a first electrode layer disposed on the opposite ends of the substrate, a resistance layer electrically connecting the pair of electrodes, a protective layer overlaying the resistance layer, and a second electrode layer overlaying the first electrode layer and at least a portion of the protective layer. The present invention provides for higher reliability performance and enlarging the potential soldering area despite small chip size.

Abstract: A method of making a chip resistor is provided. According to this method, an aggregate board is first prepared which includes a first region and a second region which are spaced from each other via an excess portion. Then, a conductor pattern is formed which extends to bridge the first region and the second region. Subsequently, a resistor element is formed in each of the first region and the second region for connection to the conductor pattern. Then, the aggregate board is cut at the excess portion. The conductor pattern includes a thinner-walled portion extending across the excess portion and a thicker-walled portion connected to the thinner-walled portion and spaced from the excess portion.

Abstract: A switch device and a method of manufacture are provided that includes providing two substrates. The two substrates collectively include a fluid conductor switch device structure and a trench surrounding the fluid conductor switch device structure. An inner seal material is deposed on one of the substrates and an outer seal material is deposited in the trench. The substrates are joined to one another using the inner seal material and a peripheral hermetic seal is formed between the substrates using the outer seal material.

Abstract: A temperature compensating device comprises one or more columnar thermistors embedded within a substrate. Because the thermistors are substantially covered by the substrate, they are less susceptible to changes in air temperature and to temperature gradients. Moreover, within the substrate the thermistors can be made thicker and smaller in lateral area, permitting more compact, less expensive devices that exhibit improved high frequency performance. The devices can advantageously be fabricated using the low temperature co-fired ceramic (LTCC) process.

Abstract: A membrane button key structure with a built-in speaker consists of a membrane key, a bottom lid and a speaker. The membrane key includes a four-way key and a plurality of hot keys connecting with one another through a membrane and corresponding to touch switches located on a circuit board. The circuit board has a carved opening with the center of the four-way key located thereabove and the bottom lid located therebelow to form a housing compartment to accommodate the speaker. Besides housing the speaker, the extra space of the housing compartment functions as an acoustic chest for the speaker.

Abstract: A laminated chip-type resistor element having minimal variations in the resistance thereof, includes a plurality of pairs of first and second inner electrodes arranged so that the tips of each of the pairs of first and second inner electrodes are opposed to each other, and the positions of gaps between the first and second inner electrodes are different in the longitudinal direction connecting first and second end surfaces. Third inner electrodes are located outside the first and second inner electrodes defining the outermost layers so as to extend further toward the inside in the longitudinal direction than the gaps, and are electrically connected the outer electrode toward the gap.

Abstract: A position sensor is arranged to detect the position of a mechanical interaction, such as the application of manual pressure. A first fabric layer has electrically conductive fibers machined therein to provide a first conductive outer layer allowing conduction in all directions along the layer. A second fabric layer has electrically conductive fibers machined therein to provide a second conductive outer layer allowing conduction in all directions along the layer. A central layer is disposed between the first outer layer and the second outer layer. The central layer includes conductive elements. A first insulating separating element is disposed between the first conductive outer layer and the conducting elements. A second insulating separating element is disposed between the second conductive outer layer and the conducting elements. The conducting elements provide a conductive path between the first conducting outer layer and the second conducting outer layer at the position of a mechanical interaction.

Abstract: The present invention discloses a foil keyboard with a security system for detecting and preventing unauthorized mechanical access to the key contacts. The foil keyboard comprising a foil having for each key an elastic key spring area in which an electrical contact is arranged, a printed circuit board (PCB) having electrical contacts that are contacted by the electrical contacts of the keys during the key travel, and a security system which is fully integrated into the foil and the PCB. A closed circuit between keyboard foil and PCB forms a security grid that secures that unauthorized mechanical accesses against key contacts are recognized.

Abstract: A gallium based switch or sensor devices, and a process for producing such devices, in which gallium or a gallium alloy, the surface oxide is separated either in-situ or ex-situ and placed in a switching capsule. Reagents which separate the oxide without dissolving either gallium alloy or the oxide are found and can be used in the in-situ or ex-situ configurations. In-situ fluids separate the oxide layer allowing switch functionality. A electrically non-conducting carrier liquid may contain the oxide separating agent and may be used within the switching capsule. The oxide separating fluid further prevents oxidation of the metal or alloy and thereby prevents wetting of the capsule surface by the metal or alloy to allow for good electrical performance of the switch.

Abstract: An insert is provided to be attached to a shield on a surgical trocar obturator handle. The insert is actuated by the surgical trocar cannula handle so that it causes the shield to expose the sharpened obturator tip after insertion of the obturator and shield within the cannula. After usage, the insert is deactivated so that the shield again covers the obturator. The obturator can then be removed from the cannula handle and obturator shield, and the obturator handle can be discarded safely.