47384 results about "Short circuit" patented technology

An electrosurgical stapling instrument includes an end effector capable of applying bipolar RF energy into tissue. The end effector has a first pole electrode and a second pole electrode for forming an RF contact circuit with tissue. At least one of the electrodes may have a dielectric coating thereon to create a RF circuit with tissue. The dielectric coating can cover one of the electrodes to create a capacitive coupling circuit with tissue, or can have at least one open passageway extending through the dielectric coating to enable tissue contact with the electrode and the passage of RF energy therethrough. The dielectric coating on the electrode can be masked to create passageways through the dielectric, or the dielectric coating can be locally removed with a variety of techniques to form passageways. The dielectric coating may provide a barrier to prevent shorting between the dielectrically coated electrode and a conductive fastener embedded within tissue. Alternately, a cartridge coating can be used to reduce an electric surface sheet charge on the cartridge thermoplastic that can occur during the application of RF energy to tissue.

An electrosurgical generator for supplying RF power to an electrosurgical instrument for cutting or vaporising tissue has an RF output stage (42) with an RF power bridge (Q1, Q2, Q3, Q4), a pair of output lines (74) and a series-resonant output network (48). The output impedance of the output stage (42) at the output lines (74) is less than 200 / √P ohms, where P is the maximum continuous RF output power of the generator. The generator offers improved cutting and vaporising performance, especially in relation to the reliability with which an arc can be struck when presented with an initial low impedance load. Overloading of the output stage is prevented by rapidly operating protection circuitry responsive to a predetermined electrical condition such as a substantial short-circuit across the output lines. In the preferred embodiment, the output stage is capable of maintaining output pulses at least 1kW peak by supplying the power bridge from a large reservoir capacitor (60). Pulsing is dynamically variable in response to load conditions by controlling the maximum energy per pulse in response to the reservoir capacitor voltage.

A bipolar surgical instrument that includes opposing grips that can engage the tissue. A current is delivered from an electrosurgical power source to electrodes disposed on the grips to cauterize the tissue. The electrode configurations provide efficient cauterization of the tissue. In some embodiments, the positive and negative electrodes will be offset from each other to prevent shorting and to provide a thin line of coagulation heating to the gripped tissue. In some embodiments the electrodes are removably coupled to the grips through nonconductive sleeves. In some embodiments, the first electrode is disposed in a groove and the second electrode is disposed on a boss.

A bipolar surgical instrument that includes opposing grips that can engage the tissue. A current is delivered from an electrosurgical power source to electrodes disposed on the grips to cauterize the tissue. The electrode configurations provide efficient cauterization of the tissue. In some embodiments, the positive and negative electrodes will be offset from each other to prevent shorting and to provide a thin line of coagulation heating to the gripped tissue. In some embodiments the electrodes are removably coupled to the grips through nonconductive sleeves. In some embodiments, the first electrode is disposed in a groove and the second electrode is disposed on a boss.

An electrically powered surgical instrument includes a surgical end effector having a surgical procedure effecting actuation assembly. A handle is coupled with the end effector. An electric motor is disposed within a shell of the handle and has power terminals and a drive train actuating the assembly when the motor is supplied with power. A break-before-make power supply switch at the handle selectively controls supply of power to the motor. A post-termination braking circuit electrically short-circuits the power terminals when the switch does not supply power to the motor. A method for post-termination braking of an electrical motor utilizes the permanent magnetic field of the motor to counteract an inertia-induced over-stroke characteristic of the motor, drive train, and / or actuation assembly after powered operation by short-circuiting the still-spinning motor to create an electrically generated magnetic field in opposition to the permanent magnetic field upon ceasing supply of power to the motor.

A power supply control device for controlling power supply to a pair of terminals to which a load is connected, comprising a voltage measuring part for measuring a voltage which has a predetermined relationship with the voltage of the pair of terminals, a short circuit detecting part for detecting whether a short circuit exists between the pair of terminals based on the measured voltage and for making power supply to the pair of terminals stop when existence of a short circuit is detected, and a constant current supplying part for supplying a constant current though the pair of terminals; wherein the short circuit detecting part is configured to detect that the previously detected short circuit is eliminated when the voltage measured by the voltage measuring part is equal to or greater than a predetermined threshold value upon supplying the constant current through the pair of terminals.

An EL element (60) comprises an anode (61), a cathode (67), and an emissive element layer (66) interposed between the two electrodes. A TFT is connected to the anode (61) at its source electrode (33s). The peripheral portion of the anode (61) and the entire region over the TFT are covered with a planarizing insulating film (17), and a part of the exposed portion of the anode (61) is connected to the emissive element layer (66). According to the above arrangement, it is possible to prevent disconnection of the emissive element layer (66) which may be caused by an uneven surface created by the thickness of the anode (61), and to avoid formation of a short circuit between the anode (61) and the cathode (67).

A multi-touch sensor panel can be created using a substrate with column and row traces formed on either side. Metal traces running along the border of the substrate can be used to bring the row traces to the same edge as the column traces. A single flex circuit can be fabricated to connect to the rows and columns on directly opposing sides. Flex printed circuits can be bonded to directly opposing attachment areas of a substrate by cooling one side of the substrate while bonding the other. In addition, “coverlay” material extending over right-angled traces on the flex circuit ensure that those traces do not get shorted should conductive bonding material get squeezed out during bonding. Furthermore, a spacer is placed at the distal end of the flex circuit to apply even bonding pressure over the entire flex circuit attachment area during bonding.

A programmable sub-surface aggregating metallization sructure ("PSAM") includes an ion conductor such as a chalcogenide-glass which includes metal ions and at least two electrodes disposed at opposing surfaces of the ion conductor. Preferably, the ion conductor includes a chalcogenide material with Group IB or Group IIB metals. One of the two electrodes is preferably configured as a cathode and the other as an anode. When a voltage is applied between the anode and cathode, a metal dendrite grows from the cathode through the ion conductor towards the anode. The growth rate of the dendrite may be stopped by removing the voltage or the dendrite may be retracted back towards the cathode by reversing the voltage polarity at the anode and cathode. When a voltage is applied for a sufficient length of time, a continuous metal dendrite grows through the ion conductor and connects the electrodes, thereby shorting the device. The continuous metal dendrite then can be broken by applying another voltage. The break in the metal dendrite can be reclosed by applying yet another voltage. Changes in the length of the dendrite or the presence of a break in the dendrite affect the resistance, capacitance, and impedance of the PSAM.

The instant invention is directed to a separator for a high energy rechargeable lithium battery and the corresponding battery. The separator includes a ceramic composite layer and a polymeric microporous layer. The ceramic layers includes a mixture of inorganic particles and a matrix material. The ceramic layer is adapted, at least, to block dendrite growth and to prevent electronic shorting. The polymeric layer is adapted, at least, to block ionic flow between the anode and the cathode in the event of thermal runaway.

An electrosurgical forceps includes a selectively advanceable knife and a knife deployment alarm configured to emit a signal under predetermined conditions. An alarm is configured to emit a signal when the cutting blade moves relative to the blade channel. A series of resistances are arranged so that a shorting of each resistor is indicative of a predetermined operating condition triggering the alarm to emit a signal. Pressure sensors, optical measurement devices, and electrical contacts are envisioned for determining blade or trigger actuation or translation.

A method for finding an extrema for an n-dimensional array having a plurality of processing elements, the method includes determining within each processing element a first dimensional extrema for a first dimension, wherein the first dimensional extrema is related to the local extrema of the processing elements in the first dimension and wherein the first dimensional extrema has a most significant byte and a least significant byte, determining within each processing element a next dimensional extrema for a next dimension of the n-dimensional array, wherein the next dimensional extrema is related to the first dimensional extrema and wherein the next dimensional extrema has a most significant byte and a least significant byte; and repeating the determining within each processing element a next dimensional extrema for each of the n-dimensions, wherein each of the next dimensional extrema is related to a dimensional extrema from a previously selected dimension.

Abstract of the DisclosureMethods and structures are provided for increasing alignment margins when contacting pitch multiplied interconnect lines with other conductive features in memory devices. The portions of the lines at the periphery of the memory device are formed at an angle and are widened relative to the portions of the lines in the array region of the memory device. The widened lines allow for an increased margin of error when overlaying other features, such as landing pads, on the lines. The possibility of contacting and causing electrical shorts with adjacent lines is thus minimized. In addition, forming the portions of the lines in the periphery at an angle relative to the portions of the lines in the array regions allows the peripheral portions to be widened while also allowing multiple landing pads to be densely packed at the periphery.

A bipolar electrosurgical instrument has opposable seal surfaces on its jaws for grasping and sealing vessels and vascular tissue. Inner and outer instrument members allow arcuate motion of the seal surfaces. An open lockbox provides a pivot with lateral support to maintain alignment of the lateral surfaces. Ratchets on the instrument members hold a constant closure force on the tissue during the seal process. A shank portion on each member is tuned to provide an appropriate spring force to hold the seal surfaces together. During surgery, the instrument can be used to grasp and clamp vascular tissue and apply bipolar electrosurgical current through the clamped tissue. In one embodiment, the seal surfaces are partially insulated to prevent a short circuit when the instrument jaws are closed together. In another embodiment, the seal surfaces are removably mounted on the jaws.

A thermocouple for use in a semiconductor processing reactor is described. The thermocouple includes a sheath having a measuring tip at one end and an opening at the other end. A support member having bores formed along the length is disposed within the sheath. A pair of wires formed of dissimilar metals are disposed within the bores, and one end of the wires is fused together to form a junction. The wires extend along the length of the bores. As the wires exit the bore, they are spatially or physically separated to prevent a short circuit therebetween. The ends of the wires exiting the bore are also free to thermally expand in the longitudinal manner, thereby reducing or eliminating the potential for the wires to fail due to grain slip.

A bipolar electrosurgical scissors for use in open or endoscopic surgery has a pair of opposed blade members pivotally joined to one another and to the distal end of the scissors itself by a rivet which extends through a insulated bushing member. Each of the blade members comprises a blade support and a blade itself, each fabricated from metal, such as stainless steel. The blades are affixed to their associated supports by means of a suitable adhesive or adhesive composite material such as a fiberglass reinforced epoxy exhibiting dielectric properties. Cutting is performed, steel-on-steel, without causing a short circuit between the two blade supports which themselves function as the bipolar electrodes.

A capacitive sensor for determining the presence of an object, such as a user's finger or a stylus, is provided. The sensor comprises a substrate, for example made of transparent plastics material, such as PET, on which electrodes are deposited. A resistive drive electrode for example formed of transparent ITO, is arranged on one side of the substrate and a resistive sense electrode, which again may be of transparent ITO, is arranged on the other side of the substrate. Thus an overall transparent sensor may be provided. A shorting connection is also provided which is configured to connect between two locations on one of the electrodes. The electrodes are connected to respective drive and sense channels. By providing the shorting connection between two locations on one or other (or both) of the electrodes, a lower resistance connection is provided between other locations on the electrode and the corresponding drive or sense channel.

Self-aligned contacts for transistors and methods for fabricating the contacts are described. An etch resistant material is patterned to create an opening that resides above a transistor gate structure. A selective etch is performed through the opening that does not etch the transistor gate structure but does etch material that resides laterally with respect to the transistor gate structure in order to expose tops, immediately adjacent to the transistor gate structure, of drain and source regions of a diffusion layer of the transistor. Conductive material is deposited that covers respective tops of the drain and source regions of the diffusion layer of the transistor to a depth that does not short the drain and source region of the diffusion layer of the transistor. A layer above the conductive material is formed. Contacts are formed through the layer above the conductive material to respective portions of the conductive material that cover respective tops of the drain and source regions of the diffusion layer of the transistor.

A thermocouple for use in a semiconductor processing reactor is described. The thermocouple includes a sheath having a measuring tip at one end and an opening at the other end. A support member having bores formed along the length is disposed within the sheath. A pair of wires formed of dissimilar metals are disposed within the bores, and one end of the wires is fused together to form a junction. The wires extend along the length of the bores. As the wires exit the bore, they are spatially or physically separated to prevent a short circuit therebetween. The ends of the wires exiting the bore are also free to thermally expand in the longitudinal manner, thereby reducing or eliminating the potential for the wires to fail due to grain slip.

A multi-band planar antenna applicable as an internal antenna in small-sized mobile stations, and to a radio device including an antenna according to the invention. The basis is a conventional dual band PIFA with its feeding and shorting conductors and a non-conducting slot. The planar element (220) has a second slot (232) known as such, which starts at the edge of the planar element on the other side of the feeding conductor (221) and shorting conductor (211) than the above-mentioned slot (231). In addition the structure comprises a second shorting conductor (212) on the other side of the second slot, than the feeding conductor. The second slot acts as a radiator, which for instance broadens the upper band of a dual band antenna. The second shorting conductor facilitates a better matching of a multi-band antenna than in corresponding prior art antennas. The antenna is simple, and its manufacturing costs are relatively low.

In a preferred integrated circuit embodiment, a write-once memory array includes at least one test bit line which provides a respective test memory cell at the far end of each respective word line relative to its word line driver, and further includes at least one test word line which provides a respective test memory cell at the far end of each respective bit line relative to its bit line driver. An intra-layer short between word lines may be detected, such as during manufacturing testing, by biasing adjacent word lines to different voltages and detecting whether any leakage current flowing from one to another exceeds that normally accounted for by the memory cells and other known circuits. Intra-layer bit line shorts and inter-layer word line and bit line shorts may also be similarly detected. An "open" in a word line or bit line may be detected by trying to program the test memory cell at the far end of each such word line or bit line. If successfully programmed, the continuity of each word line and bit line is assured, and the programming circuitry for each word line and bit line is also known to be functional.

A bipolar electrosurgical instrument has opposable seal surfaces on its jaws for grasping and sealing vessels and vascular tissue. Inner and outer instrument members allow arcuate motion of the seal surfaces. An open lockbox provides a pivot with lateral support to maintain alignment of the lateral surfaces. Ratchets on the instrument members hold a constant closure force on the tissue during the seal process. A shank portion on each member is tuned to provide an appropriate spring force to hold the seal surfaces together. During surgery, the instrument can be used to grasp and clamp vascular tissue and apply bipolar electrosurgical current through the clamped tissue. In one embodiment, the seal surfaces are partially insulated to prevent a short circuit when the instrument jaws are closed together. In another embodiment, the seal surfaces are removably mounted on the jaws.

A programmable power (PPSE) switching element including a front power transistor, a main switching transistor, and at least one reverse current blocking transistor in series, a gate of each of which is connected to a gate driver; an inductor and a shunt resistor connected in series with the transistors; a charge storage capacitor connected between ground and a junction located between the inductor and the shunt resistor; a high-speed NPN transistor, a collector of which is connected to the front power transistor and an emitter of which is connected to an output of the main switching transistor via the shunt resistor; a current measurement element in parallel to the shunt resistor; a voltage amplifier; and a high-speed MCU.

A programmable semiconductor device has a switch element in an interconnection layer, wherein in at least one of the inside of a via, interconnecting a wire of a first interconnection layer and a wire of a second interconnection layer, a contact part of the via with the wire of the first interconnection layer and a contact part of the via with the wire of the second interconnection layer, there is provided a variable electrical conductivity member, such as a member of an electrolyte material. The via is used as a variable electrical conductivity type switch element or as a variable resistance device having a contact part with the wire of the first interconnection layer as a first terminal and having a contact part with the wire of the second interconnection layer as a second terminal. By varying the electrical conductivity of the switch element, the state of connection of the via with the wire of the first interconnection layer and the state of connection of the via with the wire of the second interconnection layer may be variably set to a shorted state, an open-circuited state or to an intermediate state A two-state switch element includes an ion conductor for conducting metal ions interposed between the first and second electrodes. The second electrode is formed of a material lower in reactivity than the first electrode. The electrical conductivity across the first and second electrodes is changed by the oxidation-reduction reaction of the metal ions. There are provided first and second transistors of opposite polarities, connected to the first electrode, and third and fourth transistors of opposite polarities, connected to the second electrode.

An elongated, flexible, flat conductive tape can be applied to any surface to be monitored for water or other liquid leaks, and electrically connected to any suitable type of conventional electrically operated leak detector. A pair of parallel spaced conductors is disposed on one side of the tape that run longitudinally along the length thereof. The conductors are spaced from one another by a small distance to insure that only a small quantity of water or other conductive liquid is necessary to bridge the gap between the conductors, and create an electrical short circuit or substantial impedance reduction between the two. In addition, the conductors are preferably as flat as possible to insure that liquid can freely flow transversely across them without being impeded thereby. Both of these features insure that the detector tape can sense even very small quantities of liquid, thereby generating an early warning of a leak condition before extensive damage results. A liquid responsive visible indication is also provided on the tape to identify the location along the tape where water or other leaking liquid has come in contact therewith, and eliminates the need for using an expensive sensing device to locate the source of a leak.

A fault detection mechanism for a LED string comprising a plurality of serially connected LEDs, the fault detection mechanism comprising: a control circuitry; and a voltage measuring means, in communication with the control circuitry, arranged to measure the voltage drop across at least one LED of the LED string, the control circuitry being operable to: measure the voltage drop, via the voltage measuring means, at a plurality of times, compare at least two of the measured voltage drops, and in the event the comparison of the at least two voltage drops is indicative of one of a short circuit LED and an open circuit LED, output a fault indicator.

A multi handset telephone system with a wireless telecom / doorbell module. The telecom / doorbell module has similar electronics as a cordless handset that includes audio and RF link with a base unit. A speakerphone functionality of a wireless telecom / doorbell audio processor is used to provide an intercom audio conversation. The wireless intercom / doorbell module is battery powered that is either charged by an AC adapter or by an existing doorbell wiring. The wireless intercom / doorbell module also work in parallel with the existing bell wiring. When a page key is pressed, the module pages the telephone system and shorts the doorbell wiring to make an existing bell ring. The doorbell module is coupled with a camera.

A high frequency treatment device is provided for high-frequency medical treatments including blood stanching. The device comprises an insertion member and a pair of jaws each representing a longitudinal direction, taking on an electrode function along an entire longitudinal region of each jaw, and having a gripping surface. In the device, a link member holds the jaws to be opened and closed in a direction allowing their gripping surfaces to be opposed to each other and links the jaws to a tip of the insertion member to keep electrical insulation between the jaws. An electrical short circuit between the jaws is prevented even when the jaws are mutually closed. A power line applies a high frequency voltage to the jaws via the link member to cause a high frequency current to flow through the jaws. An operation wire transmits open / close movements to the jaws via the link member.