43results about How to "Low impedance）" patented technology

The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement resides in the use of a lithium electrolyte of the formula: Li2B12FxZ12-x wherein x=>5 and Z represents H, Cl, and Br. Preferably, when x is less than 12, Z is Cl.

The invention comprises an elongated device adapted for insertion, including self-insertion, through the body, especially the skull. The device has at least one effector or sensor and is configured to permit implantation of multiple functional components through a single entry site into the skull by directing the components at different angles. The device may be used to provide electrical, magnetic, and other stimulation therapy to a patient's brain. The lengths of the effectors, sensors, and other components may completely traverse skull thickness (at a diagonal angle) to barely protrude through to the brain's cortex. The components may directly contact the brain's cortex, but from there their signals can be directed to targets deeper within the brain. Effector lengths are directly proportional to their battery size and ability to store charge. Therefore, longer angled electrode effectors not limited by skull thickness permit longer-lasting batteries which expand treatment options.

A player for a media unit. The player includes a front plate formed of metal and having an opening configured to receive a media unit. The player also includes a cover mounted over the opening and having a slit. The slit is aligned with the opening and configured to allow the media unit to pass through the cover and enter the opening. The cover includes an electrical conductor that contacts the front plate and is in electrostatic communication with the slit. The conductor conducts electrostatic charge from the media unit to the front plate as the media unit passes through the slit. The media unit may be a CD, DVD, memory stick, minidisc or the like.

Medical apparatus includes a pacing generator, which has first active and indifferent outputs and is configured to generate electrical pacing pulses between the first active and indifferent outputs for pacing a heart of a subject. A radio frequency (RF) generator has second active and indifferent outputs and is configured to generate RF electrical energy of a predetermined frequency between the second active and indifferent outputs for application to the heart of the subject simultaneously with the pacing pulses. A filter includes a first branch connected between the first and second active outputs and a second branch connected between the first and second indifferent outputs, each of the first and second branches including one or more notch filters having a high impedance in a vicinity of the frequency of the RF electrical energy.

A guided wave radar transmitter comprises a probe defining a transmission line including a relatively low impedance target marker above an expected sensing region of the probe. A pulse circuit is connected to the probe for generating pulses on the transmission line and receiving a reflected signal from the transmission line. The reflected signal selectively includes a target pulse representing the target marker and a level pulse representing material along the length of the probe. A controller is operatively connected to the pulse circuit. The controller normally operates at a relatively low gain to determine a level time to the level pulse to determine material level, and periodically operates at a relatively high gain to determine a target time to the target pulse. The target time is used to compensate the level time for properties of vapor above the material level.

A flat display panel includes a substrate, at least a driving chip, a plurality of control lines and conductive lines. The substrate has a display area and peripheral circuit area defined thereon. The driving chip is disposed in the peripheral circuit area, and has a plurality of pins. The pitches of adjacent pins are varied. The pitches of the pins in the central portion of the driving chip are smaller than the pitches of the pins in the border portion. The control lines and the conductive lines are disposed in the display area and the peripheral circuit area respectively, and the control lines are electrically connected to the conductive lines.

A signal buffer circuit includes a buffer to conduct a buffering operation for transmitting a signal to a subsequent unit; a resistor connected between an input side and an output side of the buffer; and a variable impedance device connected in series to the output side of the buffer. The variable impedance device is at low impedance when the buffer is conducting the buffering operation and at high impedance when the buffer is not conducting the buffering operation.

A hybrid broadband power amplifier module design is disclosed. In a power amplifier design, low impedance transmission lines are typically needed at the input and output of the transistor to match for its optimum source and load impedance. The peripheral of the GaN (Gallium Nitride) transistor is very small due to the high power density of the GaN transistor. The transmission line, for example a microstrip line, needs to be very wide to achieve low impedance on ceramic substrates such as Alumina. The dimensional mismatch from the low impedance transmission line to the transistor causes additional parasitic effect to the matching networks and limits the bandwidth of the amplifier. Capacitor materials are typically very high in dielectric constant; hence a single layer capacitor with small dimensions equalizes to a low impedance transmission line. Selected capacitors with proper dimensions can be used as the low impedance transmission lines in the matching networks. They will have comparable width to the GaN transistor and minimize the parasitic effect. The wavelength inside the capacitor will also be very short due to the high dielectric constant; hence the matching network can be much shorter. A compact hybrid amplifier module has been built in a small package with the GaN transistor, capacitor matching networks and other necessary circuits inside. More than an octave bandwidth can be achieved with this new scheme.

An electrical outlet for supplying electrical power to one or more loads is provided with a reed relay, an alarm indicator, one or more receptacles, and a pair of input terminals connected to power source to provide power to the one or more receptacles. The reed relay comprises a reed switch and a coil around the reed switch. The coil is coupled between one of the two input terminals and the one or more receptacles and configured so that the coil can generate a sufficient magnetic field to drive the reed switch to actuate the alarm indicator to give an over-current warning to a user of the electrical outlet when total amount of current flowing through the coil and consumed by the one or more loads connected to the one or more receptacles exceeds a predetermined level of current.

A method and apparatus for maintaining the cells of a fuel cell stack are disclosed. The apparatus includes a fuel cell maintenance device including means for imposing a low impedance across at least one cell of a fuel cell stack, e.g., a switch, and a pulse generator. The pulse generator is capable of pulsing a cathode of the at least one cell of through the low impedance imposing means, e.g., when the switch is closed. The method transparently maintains the cells of a fuel cell stack, and includes sequentially pulsing the cathodes of a plurality of cells in a fuel cell stack, and maintaining a consistent number of the cells providing power to a load of the fuel cell stack while sequentially pulsing the cathodes of the cell.

The invention discloses a solar energy charging / discharging system and a charging / discharging method thereof. The solar energy charging / discharging system according to the invention comprises a solar cell, a super-capacitor, and a switch. The solar cell is used for collecting solar energy and converting the solar energy into electrical energy. The super-capacitor is coupled to the solar cell. The super-capacitor and the solar cell are coupled to a load through the switch. The super-capacitor is selectively charged / discharged according to a threshold voltage.

A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime, high frequency, high power bursts of low-duty factor microwaves sufficient to generate a plasma discharge and passing a gas to be treated through the discharge so as to cause dissociative reduction of the exhaust gases and enhanced catalyst reactivity through application of the pulsed microwave fields directly to the catalyst material sufficient to cause a polarizability catastrophe and enhanced heating of the metal crystallite particles of the catalyst, and in the presence or absence of the plasma. The invention also includes a reactor for aftertreatment of exhaust gases.

An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.

An induction RF fluorescent lamp includes a lamp envelope with a re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture; a power coupler on the non-vacuum side of said re-entrant cavity comprising a ferromagnetic core overwound with at least one turn of an electrical conductor; an electronic ballast, wherein the ballast converts mains frequency voltage and current to a power coupler frequency voltage and current, the electronic ballast providing the voltage and current to the power coupler through at least two of a plurality of electrical terminals of the electronic ballast; a capacitor electrically connected between the ferromagnetic core and at least one of the plurality of electrical terminals of the electronic ballast, wherein the magnitude of the impedance of the capacitor is high at the mains frequency and the magnitude of the impedance of that same capacitor is low at the operating frequency of the RF fluorescent lamp.

An audio power meter includes a circuit for measuring the power of an amplified audio signal outputted by an audio power amplifier to which the audio power meter is connected. The circuit generates an output signal indicative of the power of the amplified audio signal. A first bar display includes a plurality of separately illuminatable segments arranged linearly with respect to one another. Each segment of the plurality of separately illuminatable segments is responsive to the output signal of the circuit and is selectively illuminated in response thereto. When the measured power of the amplified audio signal exceeds a selected threshold power level, the amplified audio signal is attenuated.

An overvoltage protection devices operable to provide protection against overvoltage events of positive and negative polarity, comprising: an N P N semiconductor structure defining: a first N-type region; a first P-type region; and a second N-type region; wherein one of the first or second N-type regions is connected to a terminal, conductor or node that is to be protected against an overvoltage event, and the other one of the first or second N-type regions is connected to a reference, and wherein a field plate is in electrical contact with the first P-type region, and the field plate overlaps with but is isolated from portions of the first and second N type regions.

A damper assembly for a suspension system of a vehicle includes a housing adapted to be mounted to one end of a strut in the suspension system. The housing has a chamber with fluid therein. The damper assembly also includes at least one diaphragm extending across the chamber to react with the fluid, to be compliant at relatively small displacements, and to be rigid at relatively large displacements.

The invention provides a power converter. The insulating properties between a capacitor and the printing wiring plate pattern are improved in a power converter using a capacitor installing plate, and the low impedance of the wiring is obtained. The power converter has a DC link part for connecting a rectifying part and an inverter part, the DC link part is provided with a printing wiring plate with a smooth circuit formed by the serial connection and parallel connection of a plurality of capacitors, the printing wiring plate has negative pole patterns arranged at the upper surface side of an insulated substrate for forming a negative pole of the DC link part, positive pole patterns arranged at the lower surface side of the insulated substrate for forming a positive pole of the DC link part, and intermediate electrode patterns arranged side by side with the positive pole patterns for forming an intermediate connecting electrode of the capacitors in serial connection, wherein the negative pole patterns are formed only on a projection surface of the capacitors connected at the negative pole side of the DC link part in the capacitors in serial connection.

On a surface-roughened aluminum foil, an aluminum oxide film as an anodic oxide film is formed. Then, a conductive polymer layer as a solid electrolyte is formed thereon and thereafer a first metal plating layer is directly formed on the conductive polymer layer, thereby forming a cathode portion. On the other hand, a second metal plating layer is formed on the surface-roughened aluminum foil, which is not subjected to anodic oxidation or which is subjected to anodic oxidation followed by polishing or formation of an anode deposition film, to thereby form an anode portion. Third metal plating layers are formed at the anode and the cathode portions to obtain a capacitor element. A plurality of capacitor elements are stacked and bonded together by applying a conductive paste before formation of the third metal plating layers or by fusion after formation of the third metal plating layers.

The low impedance probe structure is used mainly for signal transmission of printed circuit board. The present invention includes gold plating sleeve, needle part, spring and tin plating seat. The hollow sleeve has two opened ends, including one for setting the needle part and the other for setting the seat, and hollow part for the spring to be set in. The spring is soldered to the seat so as to reduce resistance during electric signal transmission and to constitute one low impedance probe structure. The bottom of the sleeve with combined seat is designed as stepped to increase the soldered area between the probe structure and printed circuit board and raise soldering stability.

A high water-containing electrolyte with higher electrical conductivity for an electrolytic capacitor, which includes a solvent made of 65% to 100% by weight of water and 35% to 0% by weight of organic solvent and an alkanolamine compound additive. An aluminum electrolytic capacitor using as its electrolyte has low impedance and excellent low-temperature stability and high-temperature prolonged life and shelf life.

A substrate treatment apparatus includes a lower electrode, an upper electrode, a first AC power supply that is connected to the upper electrode and supplies AC power at a first frequency, a second AC power supply that is connected to the upper electrode and supplies AC power at a second frequency which is lower than the first frequency, an internal electrode provided in the lower electrode, a filter circuit connected to the internal electrode, and a DC power supply connected to the internal electrode via the filter circuit. The filter circuit includes a first filter circuit that becomes low impedance with respect to AC power at the first frequency compared to AC power at the second frequency, and a second filter circuit that becomes low impedance with respect to AC power at the second frequency compared to AC power at the first frequency.

In a condenser microphone of double shield construction having an external cylinder and an internal cylinder, both of which are made of a metal, especially like a line microphone, impedance between shield parts against a high-frequency current caused by electromagnetic waves is always kept low, by which the occurrence of noise caused by electromagnetic waves is prevented. In a condenser microphone which includes an external cylinder 11 and an internal cylinder 12, both of which are made of a metal, the internal cylinder 12 being arranged in the external cylinder 11 via shock mount members 20a to 20f having elasticity, and the internal cylinder 12 containing a substrate 15 including an audio output circuit of a condenser microphone unit 14, a gasket formed by covering the surface of a core formed of an elastic material with a conductive material is used as the shock mount members 20a to 20f, by which the external cylinder 11 and the internal cylinder 12 are connected electrically to each other via the gasket.

In some embodiments, a video doorbell system includes a video doorbell device on an exterior surface of a structure and a chime kit within an interior of the structure. A transformer can be coupled in-series via electrical conductors with the video doorbell device and the chime kit. The chime kit can include an energy storage device that is charged via the electrical conductors. When a user activates a button on the video doorbell device power control circuitry within the video doorbell device can transmit a signal on the electrical conductors. Button detection circuitry within the chime kit can detect the signal and respond by transferring power from the energy storage device to a chime. While the chime is activated the transformer can continuously supply the video doorbell device with power.