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Capacitor patents

      

This page is updated frequently with new Capacitor-related patent applications.




 Harmonic cold plasma device and associated methods patent thumbnailHarmonic 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.
Plasmology4, Inc.


 Method and  adjusting a bandwidth of a sigma delta converter patent thumbnailMethod and adjusting a bandwidth of a sigma delta converter
A method and apparatus for adjusting a bandwidth of a sigma delta converter by adjusting a reference voltage provided to the sigma delta converter. The apparatus includes a switched capacitor digital-to-analog converter in the feedback loop of the sigma delta modulator.
Motorola Solutions, Inc.


 Fast current mode sigma-delta analog-to-digital converter patent thumbnailFast current mode sigma-delta analog-to-digital converter
A current mode sigma-delta modulator comprises an input node; a comparator that compares a voltage of the input node to a reference voltage and outputs a comparison result; an integrating capacitor connected to an input of the comparator; and a switched capacitor circuit connected at a first end to the input node, the input of the comparator, and the integrating capacitor, and connected at a second end to an output of the comparator. The current mode sigma-delta modulator is a component of an analog-to-digital converter..
Sony Semiconductor Solutions Corporation


 Analog to digital converter patent thumbnailAnalog to digital converter
An analog to digital converter includes an analog input and a voltage comparator coupled to the analog input for comparing a voltage at the analog input to a digitally synthesized waveform. A digital to analog converter (dac) generates the digitally synthesized waveform.
Texas Instruments Incorporated


 Method and system for charge compenssation for switched capacitor circuits patent thumbnailMethod and system for charge compenssation for switched capacitor circuits
Methods and systems for charge compensation for switched-capacitor circuits may comprise, in an electronics device comprising a first voltage source, a switched capacitor load, and a switched capacitor compensation circuit: switching a capacitor in the switched capacitor load from a first voltage to a second voltage; providing a charge to the switched capacitor load from the switched capacitor compensation circuit without requiring added charge from the first voltage source. A reference voltage may be generated utilizing the first voltage source.
Maxlinear, Inc.


 Frequency generating circuit using quartz crystal resonator patent thumbnailFrequency generating circuit using quartz crystal resonator
A frequency generating circuit includes: a differential delay circuit arranged to operably delay an input signal to generate a first delayed signal and a second delayed signal; a quartz crystal resonator arranged to operably conduct a band-pass filtering operation on one of the first and second delayed signals to generate a frequency signal; a compensation capacitor, coupled between another output of the differential delay circuit and an output of the quartz crystal resonator, arranged to operably suppress noise in the frequency signal; an oscillator arranged to operably generate an oscillating signal under control of a control signal; a frequency divider arranged to operably conduct a frequency-dividing operation on the oscillating signal to generate the input signal; and a feedback control circuit arranged to operably generate the control signal according to the frequency signal.. .

 Switch driving device and switch driving method patent thumbnailSwitch driving device and switch driving method
There are provided a switch driving device and a switch driving method capable of preventing a self-turn-on phenomenon. The switch driving device includes: a first signal output unit configured to output a pulsed first driving signal from a first output terminal thereof; a second signal output unit configured to output a pulsed second driving signal to a control terminal of a switching element from a second output terminal thereof; and a negative power supply generating unit configured to generate a negative voltage relative to a ground voltage and bias a low level of the second driving signal toward a negative side by the negative voltage.
Tdk Corporation


 Duty cycle detector circuit patent thumbnailDuty cycle detector circuit
A duty cycle detector (dcd) circuit may include: a duty cycle detector including one or more capacitor sets which are charged, discharged, or charged and discharged a clock, and suitable for detecting a duty cycle of the clock; and a frequency detector suitable for detecting a frequency of the clock. Each of the one or more capacitor sets has an adjustable capacity according to the frequency detection result of the frequency detector..
Sk Hynix Inc.


 Method and  achieving very high-output signal swing from class-d amplifier patent thumbnailMethod and achieving very high-output signal swing from class-d amplifier
An apparatus and method are disclosed for providing output signal swings that are greater than the supply voltage in a class-d amplifier. The amplifier circuit boosts the voltage across the amplifier load, such as a loudspeaker, by using capacitors to “charge pump” the voltage across the load and thus increase the voltage temporarily.
Ess Technology, Inc.


 High dynamic range device for integrating an electrical current patent thumbnailHigh dynamic range device for integrating an electrical current
A device for integrating an electric current during a period tint, including an operational amplifier and a capacitor connected between a first input and an output of the amplifier, a second input of the amplifier being taken to a voltage vbus, output voltage vout of the amplifier being saturated at a high voltage vsath and a low voltage vsath according to the charge quantity in the capacitor. The device also includes: a circuit for switching the terminals of the capacitor; and a circuit for triggering the circuit at least once during period tint when voltage vout both grows and is substantially equal to a reference voltage vref, the voltage vref being smaller than or equal to voltage vsath, and reference voltage vref and voltage vbus being selected to comply with relation 2·vbus−vref≧vsatl; and a storage circuit for storing the number of triggerings having occurred between the initial time and the end time of the integration period..
Ulis


Lc-tank oscillator having intrinsic low-pass filter

An oscillator for generating oscillation signals at two output terminals includes an inductor coupled between the two output terminals, a capacitor coupled between the two output terminals, two p-type transistors and two n-type transistors. Source electrodes of the two p-type transistors are coupled to a supply voltage, and gate electrodes of the two p-type transistors are coupled to the two output terminals, respectively.
Mediatek Inc.

Power conversion system

In a power conversion system, when a frequency of a ripple current, flowing into a power supply line of a direct current power source, is equal to a resonance frequency of an lc filter, a resonance is efficiently restricted. In the lc filter connected between the direct current power source and an inverter circuit, an n channel mosfet is arranged between a capacitor and ground.
Denso Corporation

Voltage control device and driving system using the same

A voltage control device includes an output module and a control module. The output module provides an output current at an output terminal thereof based on a control voltage.
Macroblock. Inc.

Switching power supply apparatus

A switching power supply apparatus of a current-resonance type, including a first switching element and a second switching element connected in series, a series circuit of a resonant reactor and a resonant capacitor connected in parallel to the first switching element or the second switching element, a control circuit configured to alternately turn on and off the first switching element and the second switching element, and a load detection circuit. The load detection circuit includes a shunt circuit which shunts a resonant current flowing through the resonant reactor and resonant capacitor connected in series to obtain a shunted current, converts the shunted current to a first voltage signal, and outputs the first voltage signal, a switching circuit which switches between the first voltage signal and a second voltage signal of a ground level to generate a third voltage signal, and an averaging circuit which averages the third voltage signal..
Fuji Electric Co., Ltd.

Ac-dc converter with output power suppression

A power conversion apparatus for converting ac power supplied from an ac power source to dc power includes an ac-dc conversion circuit connected with the ac power source at an input end thereof for converting the ac power to dc power, a dc-dc conversion circuit connected with an output end of the ac-dc conversion circuit at an input end thereof for converting dc voltage level of the dc power generated by the ac-dc conversion circuit, a smoothing capacitor parallel connected to the output end of the ac-dc conversion circuit and the input end of the dc-dc conversion circuit, a dc link voltage detector for detecting a voltage of the smoothing capacitor as a dc link voltage, and a control unit for controlling operation of the dc-dc conversion circuit. The control unit suppresses an output power of the dc-dc conversion circuit, if the dc link voltage is smaller than a predetermined value..
Denso Corporation

Induction motor and manufacture

An electric motor includes a main winding coupled to a first line terminal, and first and second boost windings coupled in series to the main winding. A high-speed lead wire is coupled to a first tap between the main winding and the first boost winding, a medium-speed lead wire is coupled to a second tap between the first boost winding and the second boost winding, and a low-speed lead wire is coupled to a third tap after the second boost winding.
Regal Beloit America, Inc.

Lossless short-duration electrical storage means for power generation system

A vehicle energy harvester including a subunit having an upper surface forming a roadway surface; a vehicle activated treadle on the subunit, the vehicle activated treadle moveable between a first position in which an upper surface of the treadle is at an angle with respect to the upper surface of the roadway surface and a second position in which the upper surface of the treadle is flush with the upper surface of the roadway surface; a generator that generates power in response to movement of the vehicle activated treadle from the first position to the second position and from the second position to the first position; and a capacitor coupled to the generator, the capacitor storing power generated by the generator.. .
Kinetic Energy Corporation (a Wholly Owned Subsidiary Of Solarwindow Technologies, Inc.)

Power conversion device and wireless power transmission system

A power conversion device includes a step-down-type transformer and a bridge circuit that rectifies output voltage of the transformer and supplies the rectified output voltage to a load. The bridge circuit is connected to a secondary winding of the transformer and includes mos-fets connected in series and diodes connected in series.
Murata Manufacturing Co., Ltd.

Battery management system and method and battery powered appliance incorporating the same

A controller (11) in a tap timer, having a battery (19) for connected via a charge circuit (23) to selectively charge a storage capacitor c2. The storage capacitor c2 is connected to an actuator circuit (25) to selectively provide power from the storage capacitor c2 to actuate a device m1.
Bookleaf Pty Ltd

Battery balance circuit and battery apparatus thereof

A battery balance circuit configured for a battery apparatus having two batteries coupled in series, can include: first and second capacitors respectively coupled to two terminals of the two batteries; first and second switching circuits respectively coupled to the two terminals of the two batteries, where the first and second switching circuits are configured to control charging or discharging of each of the two batteries; a third capacitor coupled between the first and second switching circuits, where the third capacitor is configured to store or release energy in order to balance battery levels between the two batteries; and parasitic inductors, where the third capacitor and the parasitic inductors are configured to resonate, and the first and second switching circuits are configured to operate at a resonance frequency.. .
Silergy Semiconductor Technology (hangzhou) Ltd

Coaxial filter and manufacturing the same

A coaxial filter is provided. The coaxial filter comprises a first port, a second port, at least two capacitor segments each having two metal layers and a dielectric layer between them, and at least one grounded inductor stub connected to a metal layer of the at least two capacitor segments.
Telefonaktiebolaget Lm Ericsson (publ)

Mim/rram structure with improved capacitance and reduced leakage current

Some embodiments of the present disclosure provide an integrated circuit (ic) device including a metal-insulator-metal (mim) capacitor structure. The mim capacitor structure includes a lower metal capacitor electrode, an upper metal capacitor electrode, and a capacitor dielectric separating the lower metal capacitor electrode from the upper metal capacitor electrode.
Taiwan Semiconductor Manufacturing Co., Ltd.

Pixelated capacitance controlled esc

Implementations described herein provide a chucking circuit for a pixilated electrostatic chuck which enables both lateral and azimuthal tuning of the rf coupling between an electrostatic chuck and a substrate placed thereon. In one embodiment, a chucking circuit for an electrostatic chuck (esc) has one or more chucking electrodes disposed in a dielectric body of the esc, a plurality of pixel electrodes disposed in the dielectric body, and a chucking circuit having the one or more chucking electrodes and the plurality of pixel electrodes, the chucking circuit operable to electrostatically chuck a substrate to a workpiece support surface of the esc, the chucking circuit having a plurality of secondary circuits, wherein each secondary circuit includes at least one capacitor of a plurality of capacitors, each secondary circuit is configured to independently control an impedance between one of the pixel electrodes and a ground..
Applied Materials, Inc.

Electrolyte solute, electrolyte, and high-voltage supercapacitor

The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be n-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, n,n-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, n-methyl-1-azabicyclo[2.2.2] octane ammonium.
Shenzhen Capchem Technology Co., Ltd.

Electrical energy storage

An electrical energy storage device, which may be for example a sodium ion capacitor (nic), lithium ion capacitor (lic), hybrid ion capacitor, a sodium ion battery or lithium ion battery. Active materials in either or both the anode and the cathode may be derived entirely or primarily from a single precursor: legume or nut shells, for example peanut shells, which are a green and highly economical waste globally generated in million tons per year..
The Governors Of The University Of Alberta

Capacitors having engineered electrodes with very high energy density

An apparatus and associated method for an energy-storage device (e.g., a capacitor) having a plurality of electrically conducting electrodes including a first electrode and a second electrode separated by a non-electrically conducting region, and wherein the non-electrically conducting region further includes a non-uniform permittivity (k) value. In some embodiments, the method includes providing a substrate; fabricating a first electrode on the substrate; and fabricating a second electrode such that the second electrode is separated from the first electrode by a non-electrically conducting region, wherein the non-electrically conducting region has a non-uniform permittivity (k) value.
Granbluetech, L.l.c.

Solid electrolytic capacitor package structure and manufacturing the same

The instant disclosure provides a solid electrolytic capacitor package structure and method of manufacturing the same. The solid electrolytic capacitor package structure includes a capacitor assembly, at least one electrode pin and a package body enclosing the capacitor assembly and the electrode pin.
Apaq Technology Co., Ltd.

Winding-type solid electrolytic capacitor and winding-type capacitor element thereof

Disclosed is a winding-type solid electrolytic capacitor which includes an enclosing casing and a winding-type capacitor element enclosed by the enclosing casing. The winding-type capacitor element includes a winding body, a positive conductive lead pin extended from a first lateral side of the winding body, and a negative conductive lead pin extended from a second lateral side of the winding body, characterized in that at least one of the positive conductive lead pin and the negative conductive lead pin is a multi-layered structure which includes an iron core and a copper or copper alloy cladding layer surrounding the iron core.
Apaq Technology Co., Ltd.

Electrolyte solution for aluminum electrolytic capacitor and aluminum electrolytic capacitor using the electrolyte solution

The present invention discloses an electrolyte solution for an aluminum electrolytic capacitor and an aluminum electrolytic capacitor using the electrolyte solution. The electrolyte solution for an aluminum electrolytic capacitor, contains electrolyte (a) and an organic solvent (b); the electrolyte (a) contains electrolyte (c) and electrolyte (d); the electrolyte (c) consists of cations (e) and alkyl phosphate anions, and the electrolyte (d) consists of cations (f) and phthalic acid anions.
Shenzhen Capchem Technology Co., Ltd.

Capacitor with multiple elements for multiple replacement applications

An apparatus includes a case having an elliptical cross-section capable of receiving a plurality of capacitive elements. One or more of the capacitive elements provide at least one capacitor having a first capacitor terminal and a second capacitor terminal.
American Radionic Company, Inc.

Thin film capacitor

60%≦(sht/s)  (2).. .

Multilayer capacitor and installation structure of multilayer capacitor

In a multilayer capacitor, a multilayer capacitor main body includes first and second main surfaces, first and second side surfaces, and first and second end surfaces, the first and second main surfaces extending in a length direction and a width direction, the first and second side surfaces extending in the length direction and a thickness direction, and the first and second end surfaces extending in the width direction and the thickness direction. The second main surface is depressed in a portion extending from opposite ends of the second main surface toward a center of the second main surface in the length direction..
Murata Manufacturing Co., Ltd.

Multilayer capacitor and installation structure of multilayer capacitor

In a multilayer capacitor, a multilayer capacitor main body includes first and second main surfaces, first and second side surfaces, and first and second end surfaces, the first and second main surfaces extending in a length direction and a width direction, the first and second side surfaces extending in the length direction and a thickness direction, and the first and second end surfaces extending in the width direction and the thickness direction. The second main surface is depressed in a portion extending from opposite ends of the second main surface toward a center of the second main surface in the length direction..
Murata Manufacturing Co., Ltd.

Three-terminal capacitor

A three-terminal capacitor includes a capacitor element including first through sixth surfaces, first-side and second-side outer electrodes, a center outer electrode between the first-side and second-side outer electrodes, and conductor layers within the capacitor element. A height h2 is greater than a height h3, where the height h2 represents a higher one of a height at a center of a portion of the first-side outer electrode on the fifth surface and a height at a center of a portion of the first-side outer electrode on the sixth surface, and the height h3 represents a height at a center of a portion of the first-side outer electrode on the third surface, wherein the height h2 and the height h3 extend in the thickness direction..
Murata Manufacturing Co., Ltd.

Method for fabricating semiconductor memory device having integrated dosram and nosram

A method for fabricating a semiconductor memory device is disclosed. A semiconductor substrate having a main surface is prepared.
United Microelectronics Corp.

Liquid crystal display device

A liquid crystal display device includes a gate driving unit connected to an ith gate line and a first compensation line, a data driving unit connected to a jth data line and a pixel unit including a first switching element including a first electrode connected to the jth data line, a pixel electrode connected to second electrode of the first switching element, and a compensation capacitor including a first electrode connected to the first compensation line and a second electrode connected to the pixel electrode, where the gate driving unit includes a second switching element including a gate electrode connected to an i−1th gate line, a first electrode connected to a reset line, and a second electrode connected to the first compensation line, and a third switching element including a gate electrode connected to an i+1th gate line and a first electrode connected to the first compensation line.. .
Samsung Display Co., Ltd.

Pixel circuit and driving method thereof, organic light- emitting display device

A pixel circuit, a driving method of a pixel circuit and an organic light-emitting display device are provided. The pixel circuit includes a first transistor having a gate electrode receiving a first light-emitting signal, a first terminal receiving a first reference voltage, and a second terminal connected to a first node; a second transistor having a gate electrode receiving a first scanning signal, a first terminal receiving a second reference voltage, and a second terminal connected to a second node; a third transistor having a gate electrode connected to the second node, a first terminal connected to a third node and a second terminal connected to a fourth node; a fourth transistor having a gate electrode receiving a second scanning signal, a first terminal receiving a data signal, and a second terminal connected to the third node; a fifth transistor having a gate electrode receiving the second scanning signal, a first terminal connected to the fourth node, and a second terminal connected to the second node; a sixth transistor having a gate electrode receiving a second light-emitting signal, a first terminal receiving a first power supply voltage, and a second terminal connected to the third node; a seventh transistor having a gate electrode receiving the second light-emitting signal, a first terminal receiving the first power supply voltage, and a second terminal connected to the first node; an eighth transistor having a gate electrode receiving the second light-emitting signal and a first terminal connected to the fourth node; a light-emitting element having a first terminal connected to the second terminal of the eighth transistor and a second terminal receiving a second power supply voltage; and a first capacitor having a first terminal connected to the first node and a second terminal connected to the second node..
Tianma Microelectronics Co., Ltd.

Pixel circuit and display device

A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a tft serving as a drive transistor is connected to an anode of a light emitting element, a drain is connected to a power source potential, a capacitor is connected between a gate and source of the tft, and a source potential of the tft is connected to a fixed potential through a tft serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.. .
Sony Corporation

Pixel and organic light emitting display device including the same

A pixel includes a pixel circuit and a storage circuit. The pixel circuit provides a driving current corresponding to a data signal to an organic light emitting diode.
Samsung Display Co., Ltd.

Shift register unit, its driving method, gate driver circuit and display device

The present disclosure provides a shift register unit, its driving method, a gate driver circuit and a display device. The shift register unit includes a pull-up circuit configured to pull up a potential at the pull-up node pu in accordance with a starting signal from a starting signal input end, a pull-down circuit configured to pull down the potential at the pull-up node in accordance with a resetting signal from a resetting signal input end, a first capacitor configured to bootstrap the potential at the pull-up node at a pull-up stage, a first noise reduction circuit configured to perform noise reduction on a signal from the output end of the shift register unit at a pull-down stage and a compensation circuit configured to compensate for the potential at the pull-up node at a touch stage in accordance with a touch switch signal from a touch switch end..
Hefei Boe Optoelectronics Technology Co., Ltd.

Self biasing driver circuit for voltage boosting

A driver circuit for voltage boosting comprises a plurality of circuit cells, each configured to amplify voltage applied thereto; and a plurality of inter-cell switching circuits, arranged to controllably concatenate the cells in series such that, for any pair of adjacent cells, voltage amplified by one cell of the pair is applied, via a respective inter-cell switching circuit, to another cell of the pair. At least one of the inter-cell switching circuits comprises a transistor and a capacitor connected in parallel to each other such that a source-gate voltage of the transistor equals a voltage drop on the capacitor at all times..
Microsoft Technology Licensing, Llc

Apparatus for determining whether door is open or closed and image forming apparatus

An open-close discriminating apparatus includes an output portion configured to output a dc voltage having been converted from an ac voltage; a switch portion having an end connected with the output portion, the switch portion being configured to supply the dc voltage outputted to the output portion to a load when the switch portion is in a closed state, and to shut off the supply when the switch portion is in an open state; a capacitor connected with the other end of the switch portion; and a discriminating portion configured to discriminate whether the switch portion is in the open state or the closed state on the basis of a change amount of a voltage of the other end of the switch portion in a predetermined time period.. .
Canon Kabushiki Kaisha

Voltage detecting circuit and voltage detecting method

A voltage detecting circuit includes a ground potential unit, a dc power supply which is insulated from the ground potential unit, a capacitor to which voltage from the dc power supply is applied, a control unit which controls charging and discharging of the capacitor, a charging circuit that includes the dc power supply, the capacitor and a charging path through which the capacitor is charged, and a discharging circuit that includes the capacitor and a discharging path through which the capacitor is discharged. The control unit includes a calculation unit which calculates a voltage value of the dc power supply, based on an actual capacitance value c of the capacitor which is obtained by both-end voltage of the capacitor corresponding to a first time and the both-end voltage of the capacitor corresponding to a second time.
Yazaki Corporation

Microelectromechanical sensor device with reduced stress sensitivity

A mems sensor device provided with a sensing structure, having: a substrate with a top surface extending in a horizontal plane; an inertial mass, suspended over the substrate; elastic coupling elements, elastically connected to the inertial mass so as to enable inertial movement thereof with respect to the substrate as a function of a quantity to be detected along a sensing axis belonging to the horizontal plane; and sensing electrodes, capacitively coupled to the inertial mass so as to form at least one sensing capacitor, a value of capacitance of which is indicative of the quantity to be detected. The sensing structure moreover has a suspension structure, to which the sensing electrodes are rigidly coupled, and to which the inertial mass is elastically coupled through the elastic coupling elements; the suspension structure is connected to an anchorage structure, fixed with respect to the substrate, by means of elastic suspension elements..
Stmicroelectronics S.r.l.

Sensor

According to one embodiment, a sensor includes a substrate, a variable capacitor including a bottom electrode provided on the substrate and a top electrode provided above the bottom electrode so as to face the bottom electrode, a movable structure including a portion located above the top electrode and being movable in accordance with a specific physical quantity, a support structure including at least one support portion supporting the top electrode, and a connection structure connecting the movable structure and the top electrode to displace the top electrode based on displacement of the movable structure, wherein the top electrode is displaced about an axis penetrating the at least one support portion, which serves as a first rotation axis.. .
Kabushiki Kaisha Toshiba

Rotational sensor

A sensor package is provided. The sensor package comprises a first lead comprising a first anchoring area configured to anchor the first lead to a package body; a second lead comprising a second anchoring area configured to anchor the second lead to the package body; a sensor component; and a capacitor coupled between the first and second anchoring areas..
Nxp B.v.

Multi-mass mems motion sensor

A micro-electro-mechanical system (mems) motion sensor is provided that includes a mems wafer having a frame structure, a plurality of proof masses suspended to the frame structure, movable in three dimensions, and enclosed in one or more cavities. The mems sensor includes top and bottom cap wafers bonded to the mems wafer and top and bottom electrodes provided in the top and bottom cap wafers, forming capacitors with the plurality of proof masses, and being together configured to detect motions of the plurality of proof masses.
Motion Engine Inc.

Led fluorescent lamp

A light-emitting diode (led) lamp which can replace a typical fluorescent lamp is provided. The led lamp comprises external connection pins connected to terminals of an electronic or magnetic fluorescent lamp ballast, capacitor pairs connected to each of the external connection pins, diodes connected to each of the capacitor pairs and a led array connected between the diodes, wherein an first external connection pin, a first capacitor pair, a first diode, an led array, a second diode, a second capacitor pair and a second external connection pin are connected in series.
Kumho Electric Inc.





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