Abstract: In one example in accordance with the present disclosure, a power management device is described. The power monitoring device includes an input line to receive input power information from a power supply device. The input power information is indicative of a level of input power from the power supply device. A controller of the power monitoring device determines a scaling amount of the input power information based on a power rating of the power supply device. A programmable scaling device scales the input power information based on the scaling amount to generate output information and an output line passes the output information to a set of recipient devices.

Abstract: The present disclosure provides a touch detection chip and a touch screen detection method. The touch detection chip includes: a signal output unit configured to output a driving signal to a first channel of a touch screen; a first analog front end circuit, an inverting input end of which being connected to the first channel; a second analog front end circuit, an inverting input end of which being connected to a second channel of the touch screen; an impedance-adjustable circuit connected between a non-inverting input end of the first analog front end circuit and the signal output unit; a DC voltage unit connected to a non-inverting input end of the second analog front end circuit; and a processing unit separately connected to the signal output unit, the first analog front end circuit and the second analog front end circuit.

Abstract: The invention provides a pendulum system including a pendulum connected to a connector, the system including wires connecting the pendulum to the connector, which wires are connected together in a twisted cable, the twisted cable presenting a spiral central portion generally shaped as a cone having its apex connected to the connector so as to be the portion of the spiral that is closest to the pivot point of the pendulum. The invention also provides a method of fabricating such a pendulum system.

Abstract: A power supply circuit includes a DC-DC converter and a choke coil. The choke coil includes a pair of coils wound in mutually opposite directions, and the coils are connected between a DC power source and the DC-DC converter. In the choke coil, a self-resonating frequency in a common mode is higher than a self-resonating frequency in a normal mode. In the choke coil, a normal mode impedance at the highest frequency in an AM band is higher than a common mode impedance at the lowest frequency in an FM band.

Abstract: A self-oscillating DC-DC converter structure is proposed in which an oscillator is completely internalized within the switched-capacitor network. This eliminates power overhead of clock generation and level shifting and enables higher efficiency at lower power levels. Voltage doublers are cascaded to form a complete energy harvester with a wide load range from 5 nW to 5 ?W and self-starting operation down to 140 mV. Because each doubler is self-oscillating, the frequency of each stage can be independently modulated, thereby optimizing the overall conversion efficiency.

Abstract: Disclosed are an LDC control apparatus for preventing an LDC from being overheated, and a method of operating the same. The LDC control apparatus includes a comparator configured to compare a heat release temperature of an LDC with a predetermined criterion temperature, an adjustor configured to adjust a predetermined criterion current value according to a result of the comparison of temperature, and a controller configured to compare the adjusted criterion current value with an output current value being output from the LDC, and control the LDC by converting a control mode of the LDC according to a result of the comparison of current.

Abstract: There is provided a semiconductor device which can provide desired output characteristics suitable to applications. A semiconductor device 10 includes a temperature sensing unit 11 which generates an analog sensing signal corresponding to a temperature, and an AD converter unit 12 which converts the analog sensing signal into a digital output signal corresponding to an adjusted temperature change rate based on a temperature change rate adjustment signal for adjusting the temperature change rate. The temperature change rate refers to a change in a detected temperature per bit of a digital output signal.

Abstract: The present disclosure relates to an intermediate circuit for an EC motor, comprising at least two similar series-connected capacitors for the connection of an electronic commutation device of an EC motor for nominal operation at a nominal voltage. In each case, a varistor is connected in parallel to each series-connected capacitor, wherein all the varistors are designed similarly. The capacitors and the varistors are dimensioned so that the threshold voltage of the varistors is less than the breakdown voltage of the respective parallel-connected capacitor, and, in the case of the failure of a capacitor or of a varistor, the sum of the threshold voltages of the remaining varistors is smaller than/equal to the nominal voltage of the intermediate circuit, and the sum of the threshold voltages of the series-connected varistors is greater than the nominal voltage of the intermediate circuit.

Abstract: A device including a first electrical conductor, a second electrical conductor, dielectric material connecting the first and second conductors to each other, and an output or ground terminal section. The first electrical conductor has a first terminal section and a first plate section. The second electrical conductor includes a second terminal section and a second plate section. The second terminal section is connected to a first end of the second plate section. The second plate section includes a coil shaped section. The output terminal section is connected to an opposite second end of the second plate section. The dielectric material connects the first and second plate sections to each other.

Abstract: A voltage transformer is described, which includes a. first parallel connection of a first capacitor having a number of N>=1 actuators connected in parallel having N-input voltages and N-input currents. A second capacitor is connected to the first parallel connection in series, the capacitor voltage being lower than or equal to the lowest input voltage of the actuators.

Abstract: A circuit-based technique enhances the power output of electrostatic generators employing an array of axially oriented rods or tubes or azimuthal corrugated metal surfaces for their electrodes. During generator operation, the peak voltage across the electrodes occurs at an azimuthal position that is intermediate between the position of minimum gap and maximum gap. If this position is also close to the azimuthal angle where the rate of change of capacity is a maximum, then the highest rf power output possible for a given maximum allowable voltage at the minimum gap can be attained. This rf power output is then coupled to the generator load through a coupling condenser that prevents suppression of the dc charging potential by conduction through the load. Optimized circuit values produce phase shifts in the rf output voltage that allow higher power output to occur at the same voltage limit at the minimum gap position.

Abstract: A method of generating a patterned pulse. The method comprises charging a plurality of capacitor units with a plurality of charges, and sequentially coupling the plurality of charged capacitor units to at least one electrical regulator so as to allow delivering a regulated energizing pulse having a desired multi-level voltage waveform to a load. The electrical regulator is connected to a load.

Abstract: Disclosed is an electrical isolator circuit comprising an input stage comprising first and second inputs, the input stage being configured to receive an input voltage signal; an output stage comprising first and second outputs electrically connected across a load capacitor; and a DC isolator comprising a first capacitor between said first input and said first output and second capacitor between said second input and said second output. The first and second plates of each of the first, second and load capacitors are defined by conductive layers of a printed circuit board and the dielectric of each of the first, second and load capacitors are defined by a non-conducting part of the printed circuit board.

Abstract: According to one embodiment, there is provided a power-supply circuit including a substrate, a chopper circuit, a conductive member, first capacitative elements, and second capacitative elements. The substrate includes a mounting surface. The chopper circuit is provided on the mounting surface, includes input ends, output ends, and a switching element, and converts a voltage input from the input ends and outputs the voltage from the output ends according to switching driving of the switching element. The conductive member is adjacent to at least a part of the chopper circuit. The first capacitative elements are electrically connected between the input ends and the conductive member and capacitively couple the input ends and the conductive member. The second capacitative elements are electrically connected between the output ends and the conductive member and capacitively couple the output ends and the conductive member.

Abstract: Systems and methods of generating output multiple voltages may include connecting a first low pass filter to a switched capacitor voltage divider at the first junction point. The switched capacitor voltage divider may be configured to receive an input voltage and to generate a first output voltage. The first low pass filter may be associated with a second output voltage. The first junction point may be positioned between a first switch and a second switch of the switched capacitor voltage divider.

Abstract: The present invention discloses an electronic inductance circuit for the power supply of a 2-wire bus intercom system and a device thereof. The electronic inductance circuit comprises a main circuit path along an inductor and a source terminal and a drain terminal of a FET between the input terminal and the output terminal of said electronic inductance circuit, in which said inductor is connected to said source terminal of said FET; a resistor and a freewheeling diode individually connected to said inductor in parallel; and a secondary circuit path along a capacitor connected with a second resistor in series between said input terminal and said output terminal, which is connected to said main circuit path in parallel. The solutions of the present invention achieve larger direct current power supply for the 2-wire intercom system and stable alternating current impedance with fast response to the DC power supply.

Abstract: An intelligent power supply is provided for a Fieldbus network that dynamically regulates the voltage level inside a hazardous area by adjusting the voltage from a power supply outside the hazardous area based upon measured voltage levels at the Device Coupler inside the hazardous area. This eliminates the need for a separate voltage limiter.

Abstract: A linear voltage regulator includes a Miller frequency compensation having a movable zero, which tracks the frequency of the load pole as the load condition changes. The compensated voltage regulator maintains stability under variable load conditions. Because of the Miller effect, DC open-loop gain and bandwidth are not sacrificed for stability. The compensated voltage regulator can therefore maintain high power supply rejection ratio (PSRR).

Abstract: An adaptive voltage divider for measuring a high voltage between a ground terminal (GND) and a measurement terminal (U). It comprises a first branch comprising a first set of impedance elements (Z, R) forming a voltage divider circuit connected between the ground terminals (GND) and the measurement terminal (U) and a voltage meter (AD2) configured to measure voltage on one of the impedance elements (Z, R) of the first branch. Furthermore, it comprises a second branch comprising a second set of impedance elements (Q, P) connected between the ground terminal (GND) and the measurement terminal (U) and switchable between a plurality of configurations, wherein in at least one configuration the second set of impedance elements (Q, P) forms a voltage divider circuit, and voltage meters (AD1, AD3) configured to measure voltage on at least one of the impedance elements (Q, P) of the second branch.

Abstract: In a circtuit adapted to supply a voltage VS an electronic device, such as a load or a light source said voltage VS is led to a circuit (ACG) that is able to derive a voltage VACG from VS where VACG?VS. The circuit consist in a first embodiment of three serial coupled diodes (D1,D2,D3) and two capacitors (C1,C2), and where the capacitor (C1) is coupled in parallel with tow of the diodes (D1,D2) and the capacitor (C2) is coupled in parallel with the diodes (D2,D3). In this way an Asymmetric Current Generator (ACG) is provided, that from a normal periodic source voltage VS can derive two voltages both of which are suitable for a rechargeable battery or a light source. In this way a cost effective voltage in which the voltage required for the electronic device is beneficial for recharging the battery or strengthen the light for a LED light source leading to save in current cost and a fast recharging of the rechargeable battery and gaining light from the light source.

Abstract: Embodiments for at least one method and apparatus of a voltage supply are disclosed. One voltage supply apparatus includes a voltage supply, a plurality of power amplifier (PA) decoupling circuits, and a plurality of power amplifiers. Each PA decoupling circuit is connected to the voltage supply and provides a filtered voltage supply to a corresponding one of the plurality power amplifiers. Each PA decoupling circuit configured to suppress noise of the provided filtered voltage supply below a threshold at one or more selected frequencies, wherein the suppression is provided by the PA decoupling circuit operating in conjunction with at least one other of the plurality of PA decoupling circuits.

Abstract: A system and method are provided for controlling a locomotive such that the braking effort is maintained at its optimal maximum level throughout the extended range. The method comprises detecting a first reduction in speed of the locomotive; energizing at least one solid state device connected across one or more grid resistors for a first predetermined amount of time to divert current away from the one or more grid resistors for the first predetermined amount of time; and de-energizing the solid state device after the first predetermined amount of time. The solid state device may be an Isolated Gate Bipolar Transistor (IGBT) and a plurality of solid state devices are energized, each solid state device being connected across a corresponding resistor grid.

Abstract: In one embodiment of the invention, a low frequency converter is described that includes a first electrochemical capacitor to charge to an input voltage and a second electrochemical capacitor that is coupled to the first electrochemical capacitor. The second electrochemical capacitor is associated with an output voltage of the low frequency converter. Each electrochemical capacitor may have a capacitance of at least one millifarad (mF) and a switching frequency that is less than one kilohertz.

Abstract: A Low Forward Voltage Rectifier (LFVR) circuit includes a bipolar transistor, a parallel diode, and a capacitive current splitting network. The LFVR circuit, when it is performing a rectifying function, conducts the forward current from a first node to a second node provided that the voltage from the first node to the second node is adequately positive. The capacitive current splitting network causes a portion of the forward current to be a base current of the bipolar transistor, thereby biasing the transistor so that the forward current experiences a low forward voltage drop across the transistor. The LFVR circuit sees use in as a rectifier in many different types of switching power converters, including in flyback, Cuk, SEPIC, boost, buck-boost, PFC, half-bridge resonant, and full-bridge resonant converters. Due to the low forward voltage drop across the LFVR, converter efficiency is improved.

Abstract: A multiplier circuit for a voltage Vdc applied to a first input of the circuit, comprising: a first capacitor and a second capacitor; a coupler that in a first state, can electrically couple a first terminal of each capacitor to a zero electrical potential and a second terminal of each capacitor to an electrical potential equal to Vdc, and in a second state can electrically couple the first terminal of the first capacitor to the electrical potential Vdc, the second terminal of the second capacitor to the zero electrical potential, the second terminal of the first capacitor to a first output terminal and the first terminal of the second capacitor to a second output terminal; a controller capable of controlling the change from one state to another.

Abstract: An adaptive loader for time varying, non-linear high-impedance power sources (HIS) comprising: an electronic converter, matching the impedance of said HIS to its load; at least one sensor; and a control system, controlling loading factor of the electronic converter to ensures impedance matching between said time varying HIS and its load. The loader may be used for any HIS like piezoelectric, photoelectric, thermoelectric, etc., sources. Impedance matching can be used for energy production, measurement of the input stimuli or both of them. The load may be any active or capacitive load including for example rechargeable battery. A piezoelectric generator producing time varying electrical signal in response to time varying mechanical strain can be used as HIS. For example the piezoelectric generator generates a pulse in response to a mechanical strain caused for example by one of passage of a vehicle or passage of a train.

Abstract: A DC voltage source converter for use in high voltage DC power transmission comprising at least one chain-link converter connected between first and second DC terminals. The or each chain-link converter includes a chain of modules connected in series and each module including at least one pair of semiconductor switches connected in parallel with an energy storage device. The or each chain-link converter is operable when DC networks are connected to the first and second DC terminals to control switching of the modules to selectively charge or discharge the energy storage device of one or more of the modules, as required, to offset any difference in the DC voltage levels of the DC networks.

Abstract: An electronic power conditioner circuit for use in an I EC 61 158 Fieldbus network comprising a series element, a capacitor and a resistor formed as a gyrator circuit, and a biasing circuit, in which said biasing circuit supplies a control voltage and/or current to a control terminal of the series element, and in which said biasing circuit is adapted to set said control voltage and/or current such that a voltage drop across the series element is maintained at a pre-determined level.

Abstract: An integrated circuit includes at least one FLASH memory array and at least one capacitor array disposed over a substrate. The at least one capacitor array includes a plurality of capacitor cell structures. The capacitor cell structures each includes a first capacitor electrode disposed over the substrate. A second capacitor electrode is disposed over the first capacitor electrode. A third capacitor electrode is disposed adjacent to first sidewalls of the first and second capacitor electrodes. A fourth capacitor electrode is disposed adjacent to second sidewalls of the first and second capacitor electrodes.

Abstract: An apparatus and method for substantially reducing the electrical energy consumption of a.c. induction motor-driven appliances by connecting a database predetermined capacitance in parallel with the motor-driven appliances and connecting a database predetermined inductance in series with the a.c. induction motor-driven appliances to effect the optimal power factor correction and optimal inrush current limiting of such motor-driven appliances thereby conserving electrical energy and reducing electrical energy costs. The databases of the present invention which specify the optimal power factor correction capacitance value and an optimal inductance value for specific a.c. induction motor-driven appliances eliminates the need for preliminary power factor and inrush current related electrical measurements and making the mass production and sale of the present invention practical.

Abstract: A method and system for inducing augmented levels of heat dissipation by exploiting quiescent IC leakage currents to control the temperature in high power devices. A heat control and temperature monitoring system (HCTMS) utilizes a thermal sensor to sense the junction temperature of a component, which becomes self-heated due to the quiescent leakage current inherent to the component upon the application of power to the component. By increasing the voltage level of the power source, this quiescent self-heating property is augmented, which serves to accelerate the preheating of the device, until the temperature rises above the minimum specified operating temperature of the component. The system is then reliably initialized by applying full system power and triggering a defined initialization sequence/procedure.

Abstract: An apparatus and method are provided for controlling circuit resistance values used for detection of a device in an inline powered system. The system comprises a source device, either a current source or a voltage source, associated with an inline power device. The system also comprises a resistance control circuit comprising a transistor having an emitter, a base and a collector, and a first resistor coupled between the emitter and the collector. In response to the resistance control circuit receiving a relatively low current from the source device, the transistor is configured to be in an off state so that current from the source device flows through the first resistor have a value selected in order to maintain a sufficient resistance during an inline power device detection mode.

Abstract: A distributed power supply delivery network includes an analog biased circuit array having current sources for delivering current to adjacent circuits, and a resistive ladder of resistor elements, where each resistor element is disposed between adjacent current sources. A tuned IR voltage drop network is included to match voltage drops across the resistive ladder. The tuned IR voltage drop network includes series connected resistors and a static current draw to induce the IR drop. The resistors may be matched with respect to the distributed power supply delivery system. The current source providing the static current for the IR drop may be programmed based on the power supply delivery load, in order to adjust the voltage drop across the biasing delivery route and match the voltage drop in the referenced power supply.

Abstract: A reversible, switched capacitor voltage conversion apparatus includes a plurality of individual unit cells coupled to one another in stages, with each unit cell comprising multiple sets of inverter devices arranged in a stacked configuration, such that each set of inverter devices operates in separate voltage domains wherein outputs of inverter devices in adjacent voltage domains are capacitively coupled to one another such that a first terminal of a capacitor is coupled to an output of a first inverter device in a first voltage domain, and a second terminal of the capacitor is coupled to an output of a second inverter in a second voltage domain; and wherein, for both the first and second voltage domains, outputs of at least one of the plurality of individual unit cells serve as corresponding inputs for at least another one of the plurality of individual unit cells.

Abstract: In one or more embodiments described herein, there is provided an apparatus comprising an input, an output, one or more voltage regulator circuit components, and one or more graphene capacitors. The voltage regulator circuit components are configured to provide for a change in the voltage level of signalling between the input and the output. The one or more graphene capacitors are configured to provide for smoothing of the signalling provided to the output.

Abstract: A power-supply-voltage detecting circuit in an embodiment includes a compensation circuit and a switching element which controls ON-and-OFF of the signal output of the signal circuit. The compensation circuit has a positive temperature coefficient to balance out the negative temperature coefficient that the switching element has.

Abstract: A lamp assembly (1800) may include a circuit board (201), one or more light-emitting devices (100) disposed on the circuit board (201), a heat sink (600) in thermal contact with a surface of the circuit board (201), a gasket (700) with a first surface in mechanical contact with the circuit board (201), a bezel (800) a surface (805) of which is in mechanical contact with a second surface of the gasket (700), and one or more fasteners (901) that may apply a force between the bezel (800) and the heat sink (600). A lamp array (2100) may include two or more lamp assemblies (1800), not all of which supply illumination with the same spectral characteristic, and a bearing mount (2000) that may support each lamp assembly (1800) and allow each to be oriented rotationally. A supply circuit (2500, 2600) may include a nonlinear resistive element (2501, 2601).

Abstract: A capacitive impedance decoupling AC power controller comprising, a plurality of zero loss capacitors 12 in parallel each of desired capacitance C farads. The plurality of zero loss capacitors in parallel 12 are commonly connected in series to the output AC power supply 10 of Vs volts at frequency f hertz, and to the input to the load 11.

Abstract: Disclosed is a filter circuit that includes means for monitoring currents flowing through positive and negative windings of a common-mode noise filter, and means for performing an adjustment based on the result of monitoring so as to equalize the current flowing positive and negative windings.

Abstract: A system and method for discovering a cable type and resistance for Power over Ethernet (PoE) applications. Cabling power loss in PoE applications is related to the resistance of the cable itself. A PHY can be designed to measure electrical characteristics (e.g., insertion loss, cross talk, length, etc.) of the Ethernet cable to enable determination of the cable resistance. The determined resistance can be used in powering decisions and in adjusting power budgets allocated to power source equipment ports.

Abstract: A system is disclosed for reducing power drain of a component when the component is in a powered down state. The system comprises a power input configured to receive power, a power output to the component, monitor logic configured to monitor a level of power moving between the input and output, and control logic configured to control power transfer between the input and output. The control logic may be in communication with the monitor logic and configured to selectively restrict power flow between the input and output when the monitor logic senses that power flow between the input and output falls below a threshold level. A method comprises checking a power level between the input and output, and if the power level exceeds a threshold, then permitting substantially unrestricted power flow. If the power level is less than the threshold, then restricting the power level between the input and output.

Abstract: A first resistance (125) within a power supply (110) can be connected to a power supply output (120). A variable resistance (130) can be serially coupled with the first resistance, thereby providing a first intermediate voltage at a point (115) disposed between the first resistance and the variable resistance. The variable resistance can be at a maximum in the absence of an expansion device (140) and at less than maximum in the presence of an expansion device. The first intermediate voltage and a second intermediate voltage (145) can be introduced to a comparator (150). The comparator can provide an output signal (170) when the first intermediate voltage exceeds the second intermediate voltage. The comparator output signal can be used to confirm the power supply capacity to power an external device (180) and to enable one or more external device functions.

Abstract: A power scavenging device attaches to an overhead power cable and a support pole. The power scavenging device includes a non-conducting outer body and a first capacitor and a second capacitor that are connected in series forming a voltage divider. A voltage source converter is electrically connected to the output of the power scavenging device. The voltage source converter outputs a regulated power.

Abstract: A circuit for generating a reference signal can include a first resistor string and a second resistor string substantially identical to the first resistor string, a trim circuit, and a resistor controller. The trim circuit coupled to the first resistor string is operable for generating the reference signal according to a terminal voltage at a terminal in the first resistor string. The resistor controller coupled to the first resistor string and the second resistor string is operable for selectively shorting out a resistor in the first resistor string and a corresponding resistor in the second resistor string.

Abstract: A switching transistor has its drain and source respectively connected to a gate and a source of an output transistor for supplying output current to a load, and its gate connected to an internal grounding wire GW to be connected to a grounding terminal GND. A resistance element R1 connects the gate to the source of the switching transistor. When a voltage not smaller than a predetermined value is generated across the resistance element R1 at turn-on, due to a parasitic capacitance existing between a power supply terminal. Vcc and the internal grounding wire GW, the switching transistor can be turned on to turn off the output transistor.

Abstract: To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that “n” is the number of the parallel circuits and it is an integer of 2 or larger.

Abstract: The present invention relates to a method for controlling a voltage level of a power supply grid operationally connected to a source of electrical power, the method comprising the steps of determining a short circuit impedance of the power supply grid at a point of common coupling, calculating, using the determined short circuit impedance, a gain value of the power supply grid, and controlling the grid voltage level in accordance with the calculated gain value by applying said gain value as a gain parameter in a voltage controller. The method according to the present invention may be implemented as a method for configuring a voltage controller once and for all, or it may be implemented as a method for adaptively adjusting a gain of a voltage controller.

Abstract: Some embodiments of the present invention provide a system that efficiently converts between a lower input voltage and a higher output voltage. This system includes an input which receives the input voltage, and an output which provides the output voltage. The system also includes a first capacitor with a higher potential terminal and a lower potential terminal, as well as a first set of switching devices which selectively couple the higher potential and lower potential terminals of the first capacitor between the input voltage, the output voltage and a base voltage. The system additionally includes a resonant clocking circuit which generates clock signals with substantially non-overlapping clock phases, including a first phase and a second phase.

Abstract: The disclosed embodiments relate to a system that implements a switched-capacitor power converter which is configured to actively control power loss while converting an input voltage to an output voltage. This system includes one or more switched-capacitor blocks (SCBs), wherein each SCB includes a first capacitor and a set of switching devices configured to couple a constant-potential terminal and a time-varying-potential terminal of the first capacitor between the input voltage, the output voltage and a reference voltage. The system also includes a clocking circuit which produces gate drive signals for switching transistors in the one or more SCBs. The system additionally includes a controller configured to actively control the gate drive signals from the clocking circuit to substantially minimize the power loss for the switched-capacitor power converter.

Abstract: A system and method of use for a DC-DC conversion wherein a DC supply at one voltage is converted to a DC supply at another voltage. The DC-DC converter uses a switching circuit with a broadband transmission line transformer to change the impedance level between a square-wave generator and a [square-wave]-to-DC converter. The transformer transforms generator characteristic impedance into load characteristic impedance. The method also transforms a DC source voltage into another DC load voltage.