Abstract: A method may include generating, using an oscillator, a first signal having a frequency based on a current, generating, based on a second signal, a first portion of the current, the first portion of the current having a first frequency characteristic, and generating, based on the second signal, a second portion of the current, the second portion of the current having a second frequency characteristic. A gain of the first frequency characteristic may change based on a frequency of the second signal. The first frequency characteristic may include a first gain at a first frequency, and a second gain at a second frequency. The first gain may be greater than the second gain, and the second frequency may be greater than the first frequency. A phase of the first frequency characteristic may change based on a frequency of the second signal.

Abstract: A power supply device is configured to connect a power converter between a first terminal for power supply for connecting a first power supply and a second terminal for power supply for connecting a second power supply, to connect a first switch and a second switch between a first connection point between the power converter and an interrupt circuit and a second connection point between the power converter and the second terminal for power supply, include a plurality of terminals for load for connecting loads and a plurality of load switches corresponding to the plurality of terminals for load in one-to-one correspondence, wherein each of the plurality of terminals for load is connected to a line connecting the first switch and the second switch via the corresponding load switch.

Abstract: A pulse generation circuit is provided. The pulse generation circuit includes a reference voltage generator, a pulse generator, a comparator, a voltage regulator, a voltage-controlled oscillator (VCO), and a frequency divider. The reference voltage generator generates a reference signal. The pulse generator generates a pulse signal according to the frequency division signal. The comparator receives and compares the reference signal and the pulse signal to output a comparison signal. When the pulse signal and the reference signal have the same voltage level, the comparator outputs the comparison signal with a low logic level. The voltage regulator receives the comparison signal and the frequency division signal outputs a voltage signal correspondingly. The VCO receives the voltage signal and outputs an oscillation signal correspondingly, and the frequency divider divides the oscillation signal to generate the frequency division signal.

Abstract: An example gate driver circuit includes a sequencer comprising a plurality of parameters defining a gate signal, where the gate driver circuit is configured to output the gate signal to a gate of a switch. The gate driver circuit also includes a comparator configured to output a timing signal to a parameter generation unit, the timing signal being based on a response of the switch receiving the gate signal from the gate driver circuit. The timing signal is indicative of a characteristic of the switch, and the parameter generation unit is configured to determine a parameter of the plurality of parameters based on the characteristic of the switch. The gate driver circuit is also configured to receive input from the parameter generation unit and store the input in the sequencer, the input defining the parameter of the plurality of parameters determined by the processor.

Abstract: A precharge control method for an electric vehicle, which includes: a battery configured to be switched, by switching an internal switch, between a first voltage state capable of outputting a first voltage and a second voltage state capable of outputting a second voltage higher than the first voltage; and a capacitor, includes: in a case of charging the battery at the second voltage, precharging the capacitor under a condition of the battery in the first voltage state set by switching the internal switch.

Abstract: There is provided an electrical system, comprising: a DC source configured to provide a DC electrical power; a bus electrically coupled to the DC source, the bus comprising a load, a DC-DC converter having an input side and an output side; a switching arrangement electrically coupled to the DC-DC converter, the DC source and the bus; and a control system. The input side of the DC-DC converter is configured to receive a fraction of the DC electrical power provided by the DC source. The fraction is less than unity. The control system is configured to operate the switching arrangement to selectively configure the electrical system, in at least one of a voltage increase mode and a voltage decrease mode.

Abstract: An inductive wireless power transfer and communication system includes an electrostatic shield for one of the coils. The electrostatic shield is inductively coupled with the coil and is configured as an open circuit. A signal processing element or elements, especially a modulator or a demodulator, are connected across the electrical discontinuity in the electrostatic shield. Because the electrostatic shield is inductively coupled to the coil, the modulator or demodulator can operate on the signal on the coil. An electronically controlled variable inductor is connected across the electrical discontinuity in the electrostatic shield. Because the electrostatic shield is inductively coupled to the coil, the variable inductor can tune the impedance of the system.

Abstract: A low drop-out voltage regulator (LDO) circuit structure includes a drive transistor with first connected to an input voltage node, a second terminal connected to an output voltage node and a voltage divider, and a third terminal (i.e., a control terminal). The structure employs a pair of concurrently operating feedback control loops between a feedback voltage node of the voltage divider and the control terminal to continuously adjust a control voltage applied to the control terminal and thereby reduce ripple of an output voltage (Vout) at the output voltage node. A first feedback control loop includes comparator and a push capacitor connected between the feedback voltage node and the control terminal. The second feedback control loop includes an operational amplifier connected between the feedback voltage node and the control terminal. The first feedback control loop operates a faster speed than the second to quickly initiate the necessary control voltage adjustments.

Abstract: A circuit apparatus includes: a first oscillation circuit configured to generate a first clock signal; a PLL circuit including a second oscillation circuit configured to generate a second clock signal and a frequency control voltage generation circuit configured to generate a frequency control voltage for controlling a frequency of the second clock signal, the PLL circuit being configured to synchronize a phase of the second clock signal with a phase of the first clock signal; and a failure detection circuit configured to monitor the frequency control voltage and detect whether there is a possibility that the frequency control voltage deviates from a predetermined voltage range in which the second oscillation circuit is capable of operating normally.

Abstract: An anti-theft immobilizer system for vehicles is disclosed, comprising a module installed on the vehicle's onboard battery terminals to act as an intermediary between the battery and the ignition system. This design allows rapid, user-friendly installation without requiring professional expertise. The system includes a programmable circuit board, an ultrasonic sensor, a digitally activated relay, and an independent power source. Key functionalities include measuring instantaneous current demand in the ignition circuit and disrupting the circuit to prevent engine startup. The module integrates wireless communication features, such as Bluetooth and LTE, enabling remote arming and disarming via a mobile application. Additionally, the system detects tampering or unauthorized access by measuring the distance between the module and the vehicle hood, notifying authorized users of any irregularities. This innovative solution enhances vehicle security through advanced monitoring and remote-control capabilities.

Abstract: A system of providing power to a chip on a mainboard includes a first power supply that is located on the mainboard and configured to receive a first voltage and to provide a second voltage; a second power supply and a third power supply that are located on the mainboard and disposed at different sides of the chip, where each of the second power supply and the third power supply is electrically connected to the first power supply to receive the second voltage, the second power supply provides a third voltage to the chip, the third power supply provides a fourth voltage to the chip; and at least one power supply controller that is located on the mainboard and configured to control operation of the second power supply and the third power supply.

Abstract: An antenna device includes circuitry configured to determine a first distance between a marker center and a fisheye lens, based on a first elevation angle and a coordinate of a marker along a third axis, determine second distances between the fisheye lens, and first endpoints and second endpoints, and control phase adjustment amounts by which phase shifters adjust phases of power transmission signals in a first axis direction and a second axis direction. The circuitry is configured to set phase adjustment amounts for three antenna elements including antenna elements at both ends in the first axis direction and for three antenna elements including antenna elements at both ends in the second axis direction, based on path differences between the first distance and the second distances, and set phase adjustment amounts for a plurality of antenna elements arranged two-dimensionally by parabolic interpolation of a quadratic function.

Abstract: A vehicle control system includes: in-vehicle ECUs provided according to positions within a vehicle or functions of the vehicle; and an integrated ECU configured to control the in-vehicle ECUs, the in-vehicle ECUs include an ECU capable of communicating with an auxiliary battery sensor configured to detect a state of an auxiliary battery, the auxiliary battery sensor is configured to transmit the state of the auxiliary battery to the integrated ECU via the ECU capable of communicating with the auxiliary battery sensor, and when starting the vehicle, the integrated ECU secures communication in the vehicle, and activates the ECU capable of communicating with the auxiliary battery sensor, and starts communication of the auxiliary battery sensor in parallel.

Abstract: A method of manufacturing a vapor cell includes forming a body of the vapor cell having walls defining a cavity thereinbetween, the cavity having an amount of a subject material contained therein. The method also includes forming a pore structure having a substrate material with pores of a substantially uniform dimension formed therein, the pore structure disposed along a portion of one or more of the walls of the vapor cell. The method further includes forming a liner material of a uniform thickness over one or more internal surfaces of the pores, wherein the subject material exhibits a reduced wetting angle on the liner material which is less than a wetting angle of the subject material on the substrate material.

Abstract: A converter converts a DC input voltage into a DC output voltage. The converter includes: a regulator unit coupled to a power unit. The power unit has: a first converter stage, with two input connections; a second converter stage, which is connected to the first converter stage; and a third converter stage, which is connected to the second converter stages and has two output connections. The first, second, and third converter stages are adapted so that, when the DC input voltage is applied, the DC output voltage is supplied during operation of the converter. An actual transformation ratio of the power unit is defined: by a ratio between the DC input voltage and the DC output voltage, or by a ratio between an input current and an output current. The regulator unit acts on the power unit such that the actual transformation ratio is matched to a predetermined transformation ratio.

Abstract: The present technology is directed to a method, circuit and system for improved power management, and in an aspect there is provided control circuitry for controlling operation of an associated power multiplexer circuit, the control circuitry including: a first input to receive a first voltage; a second input to receive a second voltage; comparator circuitry to determine the level of the first voltage relative to the second voltage and to generate a first control signal when the second voltage reaches a first threshold level relative to the first voltage, where the first control signal is to indicate a desired output of the associated power multiplexer circuit.

Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

Abstract: In some examples, this disclosure describes a method of operating a plurality of battery management circuits of a battery management system associated with an electric device. The method may comprise adjusting a first trim value associated with a first battery management circuit during operation of the electric device, and adjusting a second trim value associated with a second battery management circuit during operation of the electric device. The method may also comprise sinking a first amount of current in the first battery management circuit based on the first trim value; and sinking a second amount of current in the second battery management circuit based on the second trim value, wherein sinking the first amount of current and sinking the second amount of current causes the first battery management circuit and the second battery management circuit to consume substantially similar amounts of current.

Abstract: Aspect of the invention relate to apparatuses and methods for backup power systems. The apparatus comprises a communications enclosure. The communications enclosure comprises a generator module. The generator module comprises a generator and a rack mount.

Abstract: A parasitic capacitance mitigation circuit for a relaxation oscillator. The parasitic capacitance mitigation circuit includes a first switch coupled across a parasitic capacitance of a resistive sensing element and a second switch coupled between the parasitic capacitance and a reference voltage node. The parasitic capacitance mitigation circuit includes a pulse generator configured to: monitor a voltage across the parasitic capacitance; detect a voltage transient across the parasitic capacitance; and generate a pulse control signal in response to detecting the voltage transient. In response to the pulse control signal, the first switch opens and the second switch closes to discharge the parasitic capacitance through the second switch.