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Capacitor patents



      
           
This page is updated frequently with new Capacitor-related patent applications. Subscribe to the Capacitor RSS feed to automatically get the update: related Capacitor RSS feeds. RSS updates for this page: Capacitor RSS RSS


Capsule orientation detection for capsule docking system with inductive power drive circuit

Capsule orientation detection for capsule docking system with inductive power drive circuit

Lithium ion battery cell having a capacitance sensor and method for monitoring the condition of a lithium ion battery…

Lithium ion battery cell having a capacitance sensor and method for monitoring the condition of a lithium ion battery…

Lithium ion battery cell having a capacitance sensor and method for monitoring the condition of a lithium ion battery…

Sampling mixer circuit and receiver

Date/App# patent app List of recent Capacitor-related patents
12/11/14
20140365986
 Method of optimizing capacitive couplings in high-capacitance nets in simulation of post-layout circuits patent thumbnailMethod of optimizing capacitive couplings in high-capacitance nets in simulation of post-layout circuits
A method of asymmetric asynchronous decoupling of capacitors in an integrated circuit design is provided for faster simulation by circuit simulators, e.g. Fastspice circuit simulators.
12/11/14
20140364688
 Capsule orientation detection for capsule docking system with inductive power drive circuit patent thumbnailCapsule orientation detection for capsule docking system with inductive power drive circuit
A capsule endoscopic system is disclosed for receiving data from a capsule device and providing inductive power to the capsule device wirelessly, where the capsule endoscopic system incorporates a feature to automatically protect the capsule device and the docking device from damage if the capsule device is docked in a backward orientation. In one embodiment, the docking device comprises a current sense circuit to detect the current flowing through the primary coil or primary drive circuit.
12/11/14
20140363705
 Lithium ion battery cell having a capacitance sensor and method for monitoring the condition of a lithium ion battery cell of this type patent thumbnailLithium ion battery cell having a capacitance sensor and method for monitoring the condition of a lithium ion battery cell of this type
A lithium ion battery cell includes a graphite cathode, and an excess pressure valve. The excess pressure valve is configured to open in the presence of a predetermined battery cell internal pressure and discharging gases that have been produced inside the battery cell.
12/11/14
20140362957
 Sampling mixer circuit and receiver patent thumbnailSampling mixer circuit and receiver
The sampling mixer circuit comprises: a clock generating circuit that outputs four-phase control signals the periods of which are in accordance with the carrier frequency of an input signal and the phases of which are different from one another; a voltage-to-current converting circuit that converts a voltage signal based on the input signal to a current signal; four-system charge sharing circuits in which the current signal as converted is input to a plurality of capacitors in accordance with the different phases based on the four-phase control signals and in which charges are exchanged among the plurality of capacitors; and a phase-to-phase capacitor that is selectively connected, on the basis of the four-phase control signals, to the respective ones of nodes, which are other than the input nodes of the current signal, in the four-system charge sharing circuits.. .
12/11/14
20140362636
 Capacitor backup for sram patent thumbnailCapacitor backup for sram
Embodiments of the disclosure provide a method for backing up data in an sram device, and an sram device that includes a capacitive backup circuit for backing up data in an sram device. The method may include writing data to the sram cell by applying an input voltage to set an input node of cross-coupled inverters to a memory state.
12/11/14
20140362635
 Capacitor backup for sram patent thumbnailCapacitor backup for sram
Embodiments of the disclosure provide a method for backing up data in an sram device, and an sram device that includes a capacitive backup circuit for backing up data in an sram device. The method may include writing data to the sram cell by applying an input voltage to set an input node of cross-coupled inverters to a memory state.
12/11/14
20140362626
 Multilevel inverter device patent thumbnailMultilevel inverter device
A multilevel inverter device comprises: a series circuit of a first switching element 21 and a second switching element 22 connected between a terminal at a high voltage side and a terminal at a low voltage side of a dc electric power supply 2; a series circuit of two capacitors 11 and 12, which is connected in parallel with the first switching element 21 and the second switching element 22, to generate an intermediate voltage of the dc electric power supply 2; and a single bidirectional switching element 100 connected between a connection point p1 of the two capacitors 11 and 12 and a connection point p2 of the first switching element 21 and the second switching element 22; and wherein the bidirectional switching element 100 has a horizontal transistor structure using gan/algan.. .
12/11/14
20140362625
 Motor vehicle electrical system having an active bridge rectifier and overvoltage protection during a load dump, rectifier system, associated operating method and means for its implementation patent thumbnailMotor vehicle electrical system having an active bridge rectifier and overvoltage protection during a load dump, rectifier system, associated operating method and means for its implementation
A vehicle electrical system includes: an active bridge rectifier which is connected to a generator via multiple phase terminals, and having terminals on the direct voltage side; a unit for recognizing load shedding at the active bridge rectifier and short-circuiting the phase terminals in a clocked manner, as the result of which a pulsed current is fed to the vehicle electrical system; a vehicle electrical system capacitor configured for smoothing the pulsed current; and a voltage limiting unit configured for clipping a voltage between the terminals of the bridge rectifier on the direct voltage side to a predefined maximum voltage.. .
12/11/14
20140362616
 High voltage switching power supply patent thumbnailHigh voltage switching power supply
A dual resonance circuit is formed of two transformers, two resonance inductors and two resonance capacitors for a resonance type switching power supply employing parallel connected transformers. The secondary winding of the transformer is configured in a center tap structure, and a top and bottom symmetrical voltage multiplying rectifier is connected to the secondary winding coupled with the parallel connected transformers, thereby obtaining the same effect as when one transformer is used.
12/11/14
20140362613
 Lc snubber circuit patent thumbnailLc snubber circuit
The present disclosure relates to an lc snubber circuit for a switching converter, wherein the switching converter includes an inductor and a switching device connected in series. The lc snubber circuit can include a first snubber diode, a snubber capacitor, a second snubber diode, and a snubber transformer having a primary winding and a secondary winding.
12/11/14
20140362516
Component placement within a solid state drive
A component mount for a data storage device (dsd). The component mount includes a flexible member or printed circuit board assembly (pcba) including a pad for electrically connecting to a printed circuit board (pcb) of the dsd.
12/11/14
20140362495
Systems and methods for implementing high-temperature tolerant supercapacitors
Systems and methods in accordance with embodiments of the invention implement high-temperature tolerant supercapacitors. In one embodiment, a high-temperature tolerant super capacitor includes a first electrode that is thermally stable between at least approximately 80° c.
12/11/14
20140362494
Resin composition and dielectric layer and capacitor produced therefrom
The present invention provides a resin composition comprising: 1 to 20 parts by weight of a reinforcing fiber; 0.2 to 5 parts by weight of an anti-settling agent; 20 to 40 parts by weight of an epoxy resin; 0.1 to 3 parts by weight of a curing agent; and 50 to 75 parts by weight of a high dielectric constant filler. The present invention further provides a dielectric layer produced from the resin composition and a capacitor comprising the dielectric layer.
12/11/14
20140362493
Highly crosslinked polymer dielectric films for improved capacitor performance
New polymeric dielectric materials are provided for high power capacitors, especially for mobile and weapons applications. These materials utilize aminoplast crosslinking in their polymeric structure.
12/11/14
20140362324
Sequential circuit and semiconductor device
The following semiconductor device provides high reliability and a narrower frame width. The semiconductor device includes a driver circuit and a pixel portion.
12/11/14
20140362323
Active matrix substrate and liquid crystal display panel including the same
An auxiliary capacitor (6) of each of sub-pixels (p) includes a transparent electrode, a pixel electrode, and a capacitor insulating film between the transparent electrode and the pixel electrode. Switching elements (5a) are connected, for every predetermined sub-pixel(s) (p) along a column direction of the sub-pixels (p) arranged in rows and columns, to the source lines (15a) different from each other.
12/11/14
20140362319
Liquid crystal display
An lcd includes a liquid crystal panel having a tft substrate, a cf substrate, and a liquid crystal layer interposed between the two substrates; a tft ambient light photosensor having a semiconductor layer for detecting external light; a photodetector unit having a capacitor in which a predetermined reference voltage is charged and a voltage charged by leakage current of the tft ambient light photosensor is lowered; and an ambient light photosensor reader unit for reading a voltage charged in the capacitor for a predetermined read period. The photodetector unit is disposed on a first surface of the tft substrate that is in contact with the liquid crystal layer, and the surface of the photodetector unit except for the semiconductor layer and its periphery is covered by a light-shielding layer.
12/11/14
20140362317
Display device and electronic device
A display device having less defective alignment is provided. A display device having a high aperture ratio and including a capacitor which can increase charge capacity is also provided.
12/11/14
20140362273
Solid-state imaging apparatus and semiconductor device
The present invention provides a small-sized inexpensive solid-state imaging apparatus. A d/a converter included in a successive comparison type a/d converter of the solid-state imaging apparatus includes a multiplexer which selects any of reference voltages vr0 to vr16 and sets it as an analog reference signal when coarse a/d conversion is performed, and which selects reference voltages vr (n−1) to vr (n+2) of the reference voltages vr0 to vr16 when fine a/c conversion is performed, and a capacitor array which generates an analog reference signal, based on the reference voltages vr (n−1) to vr (n+2) when the fine a/d conversion is performed.
12/11/14
20140362068
Driving circuit
A driving circuit includes a first transistor, a capacitor, a second transistor, and a charging circuit. The input terminal of the first transistor is electrically connected to a voltage source.
12/11/14
20140362047
Touch sensing circuit capable of adjusting reception frequency band, and touch sensing system having same
The present invention introduces a touch sensing circuit that adjusts a reception frequency band, which adjusts a width of a reception frequency band of a driving signal applied from a driving electrode of a touch screen panel and transferred to a reception electrode of the touch screen panel. The touch sensing circuit adjusts the width of the reception frequency band of the driving signal, which is applied from the driving electrode of the touch screen panel and transferred to the reception electrode of the touch screen panel, by using a high pass filter prepared in the form of a differentiator and a low pass filter prepared in the form of an integrator.
12/11/14
20140362046
Touch sensor system
The present invention provides a touch sensor system which is capable of removing a hand-placing signal while mounting normal application software on a host device. A touch sensor system (1) includes a hand-placing removing process section (2) which detects a hand-placing region on a basis of strengths of capacitance signals, each strength being indicative of a change in capacitance and which replaces values of capacitance signals corresponding to respective capacitors provided in the detected hand-placing region with a nil value indicative of a state where not touch input is made..
12/11/14
20140362037
Capacitance sensing circuit and power supplying apparatus utilizing the capacitance sensing circuit
A capacitance sensing circuit, comprising: a first voltage source; a first switch, wherein the first voltage source charges a sensing capacitor to a first voltage when the first switch is conductive; a base capacitor; a second voltage source; a second switch, wherein the second voltage source charges the base capacitor to a second voltage when the second switch is conductive, where the first switch and the second switch are simultaneously conductive via a control signal; a first comparator, for outputting a first comparing result according to a voltage difference between a sensing voltage on the sensing capacitor and a base voltage on the base capacitor, and a voltage difference between the first voltage and the second voltage; and a voltage holding circuit, for keeping the base voltage at a reference voltage.. .
12/11/14
20140361966
Level conversion circuit and liquid crystal display device using the same
A level conversion circuit includes level conversion portions which are connected in series. The level conversion portion includes circuit blocks.
12/11/14
20140361940
Vehicle door handle assembly with antenna circuit
A door handle assembly for a door of a vehicle, with the door handle assembly configured to mount at a handle region of a vehicle door, includes an antenna circuit for an antenna of a passive entry system of the vehicle. The antenna circuit includes at least an inductor in series electrical connection with a capacitor.
12/11/14
20140361846
Communication device and control method thereof
A communication device is provided in the present invention. The communication device comprises an oscillation signal source, a tunable capacitor array, a frame counter; and a control module.
12/11/14
20140361826
Device, sensor and method for detecting the presence of a user for the opening of an access point to a motor vehicle
A device for detecting the presence of a user for the unlocking of an access point to a motor vehicle, includes a first generator of a first supply voltage, a detection capacitor adapted to be charged on account of the presence of a user, and a storage capacitor defining at the terminals thereof a storage voltage. The device also includes an intermediate capacitor, elements for charging the detection capacitor from the first supply voltage and the storage voltage, elements for discharging the detection capacitor into the intermediate capacitor, elements for charging the storage capacitor, the elements being configured so that the charge of the storage capacitor is equal to the charge of the intermediate capacitor, and elements for detecting the presence of a user for the unlocking of an access point to the motor vehicle on the basis of the charge of the storage capacitor..
12/11/14
20140361781
Capacitive charge pump
One or more charge pumps may be used to amplify the output voltage from a chemically-sensitive pixel that comprises one or more transistors. A charge pump may include a number of track stage switches, a number of boost phase switches and a number of capacitors.
12/11/14
20140361759
Bootstrap driving circuit without extra power supply
The present invention provides a bootstrap driving circuit without extra power supply, which circuit includes a power unit, a switching unit, a bootstrap unit, a drive unit; the power unit is used to output a direct voltage; the switching unit is connected with the power unit, to control the turn-on or turn-off with the power unit; the bootstrap unit is connected with the switching unit, to supply drive electric energy and output drive power; the bootstrap unit includes an energy storage capacitor; the drive unit is connected with the bootstrap unit, to output control signal under the drive of the drive power. The bootstrap driving process is completed via the charging-discharging of the energy storage capacitor in the bootstrap unit of the invention and without an extra power supply, which forms the bootstrap driving circuit without extra power supply, further overcomes the requirement of an extra power supply for a common driving circuit, reduces the power consumption and meets the demand of the circuit.
12/11/14
20140361750
On-board charger for charging battery
An on-board charger for charging a battery of an eco-friendly vehicle and a method for charging a battery using the on-board charger are provided. The on board charger reduces an output current ripple by improving a snubber circuit unit of the on-board charger for charging a battery in plug-in hybrid and electric vehicles.
12/11/14
20140361733
Charger and charging system
A charger and a charging system are provided. The charger includes: a rectifier, a transformer, a first diode, a capacitor, a voltage sampling feedback unit, a pulse width modulation (pwm) controller, a battery voltage feedback unit and a semiconductor switching component, where the battery voltage feedback unit is added in the charger to detect battery voltage of a terminal, and the detected battery voltage of the terminal is fed back to a voltage sampling feedback unit inside the charger, so that the voltage sampling feedback unit can adjust an output voltage of the charger in real time according to an actual battery voltage of the terminal, and therefore, the output voltage of the charger gradually rises along with an increase of the battery voltage of the terminal, thereby effectively reducing energy consumption of the charger and achieving a purpose of energy saving..
12/11/14
20140361691
Lighting system
A lighting system includes a switch configured so that when the switch is in a first state, current from a supply flows to a light emitter, and when the switch is in a second state, current from the supply flows through the switch bypassing the light emitter. A capacitor in parallel with the light emitter provides current to the light emitter sufficient to cause the light emitter to emit light when the switch is in the second state..
12/11/14
20140361636
Wireless power receiving apparatus
A wireless power transmitting apparatus transmits an electric power signal comprising any one from among an electric field, a magnetic field, and an electromagnetic field to a wireless power receiving apparatus. A transmission antenna includes a transmission coil.
12/11/14
20140361624
Apparatus and methods for control of load power quality in uninterruptible power systems
Systems and methods for supplying power to a load include a static switch between a primary power source and a power conditioner associated with a secondary power source, and maintenance switches between the primary and secondary power sources and a load. A controller is operable to actuate the switches.
12/11/14
20140361623
Auxiliary power supply for lighting driver circuitry
Techniques for supplying auxiliary power to lighting driver circuitry are disclosed. An auxiliary power supply can be used, for example, to provide auxiliary power to a current source that drives an led string.
12/11/14
20140361406
Semiconductor device and radio communication device
A radio communication device includes a power amplifier having a semiconductor device formed with a plurality of unit transistors. Base electrodes of the unit transistors are connected with each other by a base line, and an input capacitor is connected to the base line such that the input capacitor is commonly and electrically connected to the base electrodes of a plurality of the unit transistors..
12/11/14
20140361404
Capacitor structure
One or more embodiments relate to a semiconductor device, comprising: a semiconductor device, comprising: a semiconductor substrate; a plurality of first conductive vias, the first conductive vias electrically coupled together, each of the first conductive vias passing through the substrate; and a plurality of second conductive vias, the second conductive vias electrically coupled together, each of the second conductive vias passing through the substrate, the second conductive vias spacedly disposed from the first conductive vias, each of the second conductive vias laterally surrounding a respective one of the first conductive vias.. .
12/11/14
20140361403
Semiconductor devices including capacitors
A semiconductor device includes a first capacitor structure, a second capacitor structure, and an insulation pattern. The first capacitor structure includes a first lower electrode, a first dielectric layer and a first upper electrode sequentially stacked on a substrate.
12/11/14
20140361306
Display device and electronic equipment
A display device includes a pixel array section, the pixel array section having pixels arranged in a matrix form, at least one of the pixels including an electro-optical element, a write transistor, a capacitor, a drive transistor, and a switching transistor. A write scan line is disposed for each pixel row of the pixel array section and adapted to convey a write signal to be applied to a gate electrode of the write transistor.
12/11/14
20140361284
Organic light emitting diode display and method for manufacturing the same
An organic light emitting diode (oled) display and a method for manufacturing the same are provided. The oled display includes a substrate, an active layer and a capacitor lower electrode positioned on the substrate, a gate insulating layer positioned on the active layer and the capacitor lower electrode, a gate electrode positioned on the gate insulating layer at a location corresponding to the active layer, a capacitor upper electrode positioned on the gate insulating layer at a location corresponding to the capacitor lower electrode, a first electrode positioned to be separated from the gate electrode and the capacitor upper electrode, an interlayer insulating layer positioned on the gate electrode, the capacitor upper electrode, and the first electrode, a source electrode and a drain electrode positioned on the interlayer insulating layer, and a bank layer positioned on the source and drain electrodes..
12/11/14
20140361283
Organic light emitting diode display and method for manufacturing the same
An organic light emitting diode (oled) display and a method for manufacturing the same are provided. The oled display includes a substrate, an active layer and a capacitor lower electrode positioned on the substrate, a gate insulating layer positioned on the active layer and the capacitor lower electrode, a gate electrode positioned on the gate insulating layer at a location corresponding to the active layer, a capacitor upper electrode positioned on the gate insulating layer at a location corresponding to the capacitor lower electrode, a first electrode positioned to be separated from the gate electrode and the capacitor upper electrode, an interlayer insulating layer positioned on the gate electrode, the capacitor upper electrode, and the first electrode, a source electrode and a drain electrode positioned on the interlayer insulating layer, and a bank layer positioned on the source and drain electrodes..
12/11/14
20140360764
Multilayer ceramic capacitor and board for mounting the same
A multilayer ceramic capacitor includes a ceramic body including dielectric layers; first and second internal electrode groups disposed to be misaligned by a predetermined interval in the length direction, having the dielectric layers interposed therebetween; first and second external electrodes extended from at least one of the first and second side surfaces to at least one of the first and second main surfaces; and an insulating layer covering portions of the first and second external electrodes formed on the at least one of the first and second side surfaces, wherein the first internal electrode group includes first and second internal electrodes including first and second pattern parts and first and second lead parts, respectively, and the second internal electrode group includes third and fourth internal electrodes including third and fourth pattern parts and third and fourth lead parts, respectively.. .
12/11/14
20140360500
Breathing apparatus, and method for controlling temperature fluctuations
A wearable breathing apparatus includes a thermal capacitor that a user inhales and exhales through. Inhaled air is cooled as it passes through the thermal capacitor, and exhaled air cools the material of the thermal capacitor for the next breathing cycle.
12/04/14
20140357211
Radio receiver having enhanced automatic gain control circuitry
An apparatus includes an input terminal to receive a radio frequency (rf) signal and to communicate the rf signal to a low noise amplifier (lna) via an input signal path, and a capacitor attenuator coupled to the input terminal to attenuate the rf signal by a controllable amount and having a first portion controllable to include a used part configured on the input signal path and an unused part coupled between the input signal path and an ac reference node, and a second portion coupled between the lna and the ac reference node.. .
12/04/14
20140357127
Connector with electronic component
A connector (10) includes a capacitor (30) with a capacitor main body (31) extending in a front-back direction and two lead wires (32) extending forward from the front end of the capacitor main body (31). Busbars (50, 60) are arranged before the capacitor (30) and have two electronic component connecting portions 55, (65) to be connected to the lead wires (32).
12/04/14
20140356200
Electric pump
A pump for pumping liquid has an electric motor driving an impeller disposed within a pump chamber. The motor has a stator, a rotor, and an end cap.
12/04/14
20140355790
Amplifier and method of amplifying a differential signal
An amplifier includes a differential input with a positive and a negative input and an analog integrator with a differential integrator input and a differential integrator output. The analog integrator further includes an operational amplifier with a positive operational amplifier input, a negative operational amplifier input, a positive operational amplifier output and a negative operational amplifier output.
12/04/14
20140355697
Extracting zero cross information in a powerline communication device
A powerline communication (plc) device can be configured to execute functionality for zero cross sampling and detection. When the plc device is directly coupled to a high-voltage plc network, the plc device can comprise printed safety capacitors in series with a high-voltage input ac powerline signal to safely couple the high-voltage ac powerline signal to the low-voltage processing circuit.
12/04/14
20140355333
Semiconductor memory device and driving method thereof
A semiconductor device which stores data by using a transistor whose leakage current between source and drain in an off state is small as a writing transistor. In a matrix including a plurality of memory cells in which a drain of the writing transistor is connected to a gate of a reading transistor and the drain of the writing transistor is connected to one electrode of a capacitor, a gate of the writing transistor is connected to a writing word line; a source of the writing transistor is connected to a writing bit line; and a source and a drain of the reading transistor are connected to a reading bit line and a bias line.
12/04/14
20140355324
Inverter unit
An inverter unit includes a first circuit board and a second circuit board arranged at a predetermined space so as to face each other. Each of the first circuit board and the second circuit board has a main circuit forming area.
12/04/14
20140355322
Stacked switched capacitor energy buffer circuit
A stacked switched capacitor (ssc) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss.
12/04/14
20140355321
Single-phase power converter, three-phase two-phase power converter, and three-phase power converter
This power converter (1) is provided with: unit cells (11-m) having a semiconductor switch, a dc capacitor (c) and a charge/discharge current i/o terminal; a first arm (12-p) and a second arm (12-n) comprising multiple unit cells (11-m) connected to each other in cascade; an arm connecting unit (13) which has a first terminal to which the first arm (12-p) is connected, a second terminal to which the second arm (12-n) is connected, and a third terminal to which a dc power source is connected; and a transformer (14) which has an ac i/o terminal on the primary side and an intermediate terminal on the secondary side winding, and in which the terminal of the first arm (12-p) and the terminal of the second arm (12-n) are connected to the two end terminals on the secondary winding, and the dc power source (vdc) is connected to the intermediate terminal.. .
12/04/14
20140355178
Tungsten capacitor anode and process for production thereof
A capacitor anode including a tungsten sintered body having an average pore diameter of 0.3 μm or less; and a method for producing the anode. The method includes forming tungsten powder into a molded body having a density (dg) of 8 g/cm3 or more and then sintering the molded body to a density (ds) of at least 1.15 times the density (dg) to form a tungsten sintered body having an average pore diameter of 0.3 μm or less..
12/04/14
20140355174
Film capacitor
A film capacitor includes a capacitor element including a dielectric film and a pair of electrode layers facing each other across the dielectric film, and a pair of end-surface electrodes provided on both ends of the capacitor element. At least one electrode layer of the pair of electrode layers mainly contains aluminum and further contains zinc and magnesium.
12/04/14
20140355173
Capacitor films, methods of manufacture, and articles manufactured therefrom
A uniaxially-stretched, high yield extruded film comprising a polyetherimide comprising units derived from polymerization of an aromatic dianhydride with a diamine selected from a meta-phenylene diamine, a para-phenylene diamine, and a combination thereof, wherein the polyetherimide is endcapped with an a substituted or unsubstituted aromatic primary monoamine; and wherein the high yield extruded film comprises at least 90 weight % of the polyetherimide before extrusion.. .
12/04/14
20140355172
High linearity variable capacitor array
A highly linear, variable capacitor array constructed from multiple cells. Each cell includes a pair of passive, capacitor components connected in anti-parallel.
12/04/14
20140355163
High voltage discharge protection device and radio frequency transmission apparatus using the same
A high voltage discharge protective device for an rf device having a signal port, includes a blocking capacitor arranged at the signal port of the rf device, a circuit board for mounting the blocking capacitor, and a metal conductor grounded and partially bare. The blocking capacitor includes a main body and two leads connected to the main body and secured to the circuit board.
12/04/14
20140355038
Low-capacity power supply and image forming apparatus
A low-capacity power supply is described in which an input capacitance may be adjusted. In one example, input capacitors may be located between an ac power supply and a rectifier.
12/04/14
20140355025
Low-capacity power supply, power supply system, and image forming apparatus
A system for minimizing damage based on excess current or voltage is described in which a connection between an ac power supply and a smoothing circuit is interrupted. The system may include capacitors and relays located between the ac power supply and a rectifier.
12/04/14
20140354908
Drive circuit for liquid crystal display device, and liquid crystal display device
To reduce luminance unevenness by causing an effective voltage with positive polarity and an effective voltage with negative polarity of auxiliary capacitor lines to be equal to each other, an auxiliary capacitor line voltage-applying circuit 104 of a drive circuit for a liquid crystal display device includes a voltage generator circuit 121 configured to output voltages to be applied to a liquid crystal panel, where the voltages are with polarity being alternately reversed, and current adjustment circuits 121 each configured to adjust at least one of a current flowing out from the output circuit or a current flowing into the output circuit.. .
12/04/14
20140354720
Element substrate, printhead, and printing apparatus
A recent inkjet printing apparatus includes a large-capacitance capacitor to stabilize a heater power supply. The presence of this capacitor requires a long time to drop the heater voltage at the time of power shutdown or the like.
12/04/14
20140354713
Organic light emitting display device
An organic light emitting display device, including pixels positioned at crossing regions of scan lines and data lines and a bias voltage supply configured to supply bias voltages to the pixels. Each of the pixels includes an organic light emitting diode (oled), a first transistor coupled between a first power supply and the oled and driven in a saturation region by a corresponding one of the bias voltages to supply a set current to the oled, a second transistor coupled between the first power supply and the oled and driven in a linear region by a data signal supplied from a corresponding one of the data lines to turn on or off, and a second capacitor coupled between a gate electrode of the first transistor and the first power supply..
12/04/14
20140354582
Touch sensor for mobile device with radio
An integrated circuit that includes a wireless transceiver and a touchpad detection circuit is disclosed. The integrated circuit includes oscillators in the pad area of the device, thus minimizing silicon area used for this function.
12/04/14
20140354522
Display device and driving method thereof
A method of driving an oled display includes: during a scanning period of a first frame, turning off a relay transistor and turning on a switching transistor to enable a second data voltage applied to a data line to be stored in a first capacitor; and during a light emitting period of the first frame, performing an operation to turn on a light emitting transistor and a compensation transistor to enable a voltage into which a first data voltage and a threshold voltage of a driving transistor are reflected to be applied to a second node for enabling the oled to emit light by a driving current which flows into a driving transistor. The scanning period and the light emitting period temporally overlap each other..
12/04/14
20140354484
Antenna device and electronic device
According to one embodiment, an antenna device includes a first antenna, a second antenna, a third antenna, a capacitor element, a high-frequency cable, and a base member. The first antenna includes a folded-type monopole element.
12/04/14
20140354415
Wireless transponder unit, electrical joint monitoring system including the same, and method of monitoring electrical joints
A wireless transponder unit having a maximum operating temperature and being structured to be disposed on an electrical joint includes: an integrated circuit configured to store identification information; and a resonant circuit electrically connected to the integrated circuit, the resonant circuit having a damping factor. The resonant circuit includes a capacitor, an antenna, and a resistor having a resistance and a positive thermal coefficient.
12/04/14
20140354413
Charge-pump circuit for improving read distance
A system and method for improving the read distance of a transponder. The transponder comprises an antenna receiving energy from an interrogation signal, a resonant capacitor coupling with the antenna to form a tuned circuit, a charge-pump circuit to multiply voltage derived from the tuned circuit and a storage capacitor to store the voltage which has been multiplied by the charge-pump circuit..
12/04/14
20140354389
Compact step-programmable optimization of low-noise amplifier signal-to-noise
In various embodiments, these new transformers are comprised of remotely-controlled variable capacitors and inductors which are connected in networks between antenna element outputs and their following lna inputs. These new step-programmable inductors and capacitors can be either electrically or pneumatically actuated.
12/04/14
20140354378
Design for high pass filters and low pass filters using through glass via technology
A filter includes a glass substrate having through substrate vias. The filter also includes capacitors supported by the glass substrate.
12/04/14
20140354376
High order discrete time charge rotating passive infinite impulse response filter
A novel and useful high-order discrete-time charge rotating (cr) infinite impulse response (iir) low-pass filter is presented. The filter utilizes capacitors and a gm-cell, rather than operational amplifiers, and is thus compatible with digital nanoscale technology.
12/04/14
20140354370
Signal handling apparatus for radio frequency circuits
A signal handler providing high linearity in a small size, applicable across wide operating frequencies and bandwidths, while also adapted to preferred integrated circuit (ic) and printed circuit board technologies. In one implementation, a signal handling apparatus includes an input impedance transformer for receiving an input signal and matching an internal apparatus impedance, a splitter for providing n split signals, a number of signal processing circuits for processing the n split signals, a combiner for combining the n split signals into a combined signal, and output impedance transformer for receiving the combined signal and for matching the internal apparatus impedance to an output impedance of the apparatus.
12/04/14
20140354348
Apparatus and methods for variable capacitor arrays
Apparatus and methods for variable capacitor arrays are provided herein. In certain configurations, an apparatus includes a variable capacitor array and a bias voltage generation circuit.
12/04/14
20140354306
Power on detection circuit
A power-on-detection (pod) circuit includes a detection circuit, first and second comparison circuits, and logic circuitry. The detection circuit includes a capacitor configured to charge from a first voltage level to a second voltage level.
12/04/14
20140354303
Method and apparatus for deriving current for control in a resonant power converter
An apparatus, method, and system for measuring current within a converter. The converter including a resonant tank circuit with a capacitor, the resonant tank circuit is coupled to a dc input bridge and a first terminal of the capacitor is coupled to a ground of the dc input bridge.
12/04/14
20140354282
Ceramic camera for mri
A camera assembly for use in a mri machine. The camera assembly includes a faraday cage defining a shielded cavity and an optical path mount constructed of a highly stiff, dense, and non-electrically-conductive material in the shielded cavity.
12/04/14
20140354254
Power converter
A series circuit of a diode da1, capacitors ca1, ca2 and a diode da2 is connected in parallel to a series circuit of switching elements s1 and s2. A common junction between the capacitors ca1 and ca2 is connected to an emitter of the switching element s2.
12/04/14
20140354247
Bridgeless pfc power converter with reduced emi noise
A bridgeless pfc boost converter has either a single switching cell or two identical switching cells configured to operate 180 degrees out of phase. A switching cell includes first and second transistor switches coupled to opposing ends of an input ac voltage source, and first and second rectifying diodes, one rectifying diode coupled in series to each of the two transistor switches.
12/04/14
20140354246
Bridgeless pfc power converter with high efficiency
A bridgeless pfc boost converter has two auxiliary transistor switches coupled to an input ac voltage source and two boost inductors coupled to opposing ends of the input ac voltage source. A first boost inductor is coupled to a junction node of a first rectifying diode and a first transistor switch coupled in series.
12/04/14
20140354223
Wireless power transfer method, wireless power transmitter and wireless charging system
The present disclosure relates to a wireless power transfer method, a wireless power transmitter and a wireless charging system in a wireless power transfer field. That is, a wireless power transmitter configured to transfer power to a wireless power receiver in a wireless manner includes a power transfer unit configured to transmit power to the wireless power receiver in the wireless manner, a circuit unit having a plurality of capacitors electrically connected to the power transfer unit, and configured to support each of a plurality of frequencies by changing the electric connection of the capacitors, and a controller configured to detect a communication standard that the wireless power receiver supports, and control the electric connection of the capacitors such that the circuit unit operates at a frequency corresponding to the detected communication standard..
12/04/14
20140354168
Power supply and method for controlling the same
A power supply includes an inputter including an input capacitor and configured to receive an input dc voltage, a converter including an output capacitor and configured to convert the input dc voltage and to output the converted dc voltage, and a controller configured to control the converter to output a voltage corresponding to a reference voltage.. .
12/04/14
20140354154
Harmonic cold plasma device and associated methods
A method for generating atmospheric pressure cold plasma inside a hand-held unit discharges cold plasma with simultaneously different rf wavelengths and their harmonics. The unit includes an rf tuning network that is powered by a low-voltage power supply connected to a series of high-voltage coils and capacitors.
12/04/14
20140354074
Power feed device of inductive charging device
A power feeding device of a non-contact charging device includes a power factor improvement circuit which converts an ac power supply to dc, and improves a power factor, a smoothing capacitor connected to an output end of the power factor improvement circuit, an inverter circuit which includes a plurality of switching elements, and generates an ac signal using a voltage of the smoothing capacitor as a power supply, a power feeding section which feeds power based on the ac signal to a power receiving device, and a control circuit which modulates a duty factor of each of the switching elements of the inverter circuit in synchronization with the ac power supply, wherein the control circuit controls the plurality of switching elements so that an increment of the modulated duty factor is not equal to a decrement of the modulated duty factor.. .
12/04/14
20140354073
Power feed device of inductive charging device
A power feeding device of a non-contact charging device includes a power factor improvement circuit which converts an ac power supply to dc, and improves a power factor, a smoothing capacitor connected to an output end of the power factor improvement circuit, an inverter circuit which includes a plurality of switching elements, and generates an ac signal using a voltage of the smoothing capacitor as a power supply, a power feeding section which feeds power based on the ac signal to a power receiving device, and a control circuit which modulates at least one of a duty factor or an operation frequency of each of the switching elements of the inverter circuit in synchronization with the ac power supply.. .
12/04/14
20140354068
Power reception device, power transmission device, and power transfer system
A power reception device includes a power reception unit having a first capacitor, receiving electric power in a non-contact manner from an externally provided power transmission unit, a first housing case housing the power reception unit inside, and a first anchor member anchoring the first capacitor. The first housing case includes a first shield defining a region where an electromagnetic field developed around the power reception unit is emitted.
12/04/14
20140354067
Wireless power transmission system and method for designing the same
A wireless power transmission system includes a transmitting antenna, a power supply for supplying power of a resonance frequency f0 to the transmitting antenna, a first capacitor connected in series to the transmitting antenna, a receiving antenna magnetically coupled to the transmitting antenna, a load connected to the receiving antenna, and a second capacitor connected in series to the receiving antenna. Supposing that the coupling factor between the transmitting antenna and the receiving antenna is represented by k, the internal resistance of the power supply by rs and the resistance of the load by rl, then the self-inductance ls of the transmitting antenna and the self-inductance ll of the receiving antenna are determined to satisfy an equation: ls×ll=rs×r1/(2πf0k)2.


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