Abstract: A semiconductor device includes a main bi-directional switch formed on a semiconductor substrate and having first and second gates, a first source electrically connected to a first voltage terminal, a second source electrically connected to a second voltage terminal, and a common drain. The semiconductor device further includes a discharge circuit having a plurality of individual transistors or an auxiliary bi-directional switch monolithically integrated with the main bi-directional switch and connected in a common source configuration to the semiconductor substrate. The plurality of individual transistors or the auxiliary bi-directional switch includes a first drain connected to the first source of the main bi-directional switch, a second drain connected to the second source of the main bi-directional switch, and first and second gates each decoupled from gate drive circuitry so that the first and the second gates are controlled at least passively and based on a state of the main bi-directional switch.

Abstract: The trend in wireless communication receivers is to capture more and more bandwidth to support higher throughput, and to directly sample the radio frequency (RF) signal to enable re-configurability and lower cost. Other applications like instrumentation also demand the ability to digitize wide bandwidth RF signals. These applications benefit from input circuitry which can perform well with high speed, wide bandwidth RF signals. An input buffer and bootstrapped switch are designed to service such applications, and can be implemented in 28 nm complementary metal-oxide (CMOS) technology.

Abstract: A drive circuit for a power switching transistor includes a first pull-up drive transistor connected in parallel with a second pull-up drive transistor, a first pull-down drive transistor coupled to the first and second pull-up drive transistors in series to drive the power switching transistor. When control signal is at a high level, the first pull-up driver is turned on, and the first pull-down driver is turned off. The second pull-up drive transistor being in turn-on or turn-off state is determined by comparing voltage of the power supply with the threshold value. When voltage of the power supply is lower than the threshold value, the first and second pull-up drive transistor are driven together. When voltage of the power supply is higher than the threshold value, the second pull-up driving transistor is turned on only after the driving output is slightly larger than the Miller plateau voltage.

Abstract: A power supply assembly including an alternating current primary source connection, a direct current secondary source connection, an alternating current load connection, a DC link, a direct-current converter connected electrically between the secondary source connection and the DC link, and a load supply converter connected electrically between the DC link and the load connection. The power supply assembly includes a trickle charger converter connected electrically between at least one alternating current connection and the secondary source connection, a nominal power of the trickle charger converter being less than nominal powers of the direct-current converter and the load supply converter.

Abstract: A power capability determination device is arranged to determine a power capability of a power source, and includes a connector, a load circuit, a switch circuit, a voltage monitor circuit, and a processing circuit. The connector is arranged to receive the power source to output an input voltage at a power output terminal. The switch circuit is electrically connected between the load circuit and the power output terminal. The voltage monitor circuit is electrically connected to the power output terminal, and is arranged to monitor the input voltage to generate a monitored voltage value. The processing circuit is electrically connected to the voltage monitor circuit and the switch circuit, and is arranged to control the switch circuit, and in a state of controlling the switch circuit, receive the monitored voltage value and determine the power capability of the power source according to the monitored voltage value.

Abstract: A transformer comprising a primary winding and a secondary winding. The primary winding has N2 number turns and having a first terminal and a second terminal. The secondary winding has having N1 fractional portions, which together form a full turn, are in close proximity to the primary winding to establish coupling between the primary winding and the N1 fractional coil portions, the transformer turn ratio from the primary winding to the secondary winding is N2:(N3/N1) where N2 is an integer equal to or greater than 1, N1 is an integer greater than or equal to 2, and N3 is an integer greater than or equal to 1. Also disclosed is a stacked integrated transformer having a primary winding and secondary winding of which one or both have a waterfall structure and a portion of which functions as a ground connected shield between the secondary winding and the primary winding.

Abstract: An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters that are each supplied with DC voltage via a high-voltage bus. The electric drive system includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus.

Abstract: The embodiments of the present disclosure provide a switching method and a multi-input power system, where the method is used to control an input power source connected with N power supply units, and N is greater than 1, and the method includes: determining a switching strategy for each power supply unit, where the switching strategy is used to indicate a moment when input of a power supply unit is switched from an auxiliary input power source to a main input power source; switching, according to the switching strategy, the input of each power supply unit from the auxiliary input power source to the main input power source at the moment indicated by the switching strategy, where the main input power source includes a standby power source.

Abstract: A wireless charging device includes: a power transmission coil for wirelessly transmitting power to an external terminal, and a re-radiation antenna for receiving an antenna signal and re-radiating same. The re-radiation antenna comprises an insulation plate, and a radiation pattern part which is formed on one surface of the insulation plate, and which is arranged along the outer circumference of the insulation plate so that one end and the other end thereof are arranged to be adjacent to each other, and the radiation pattern part includes a first extension pattern in a quarter-ellipse shape, extending in the lateral direction of the insulation plate from a position adjacent to the one end of the radiation pattern part, and a second extension pattern in a quarter-ellipse shape, symmetrical to the first extension pattern, at a position adjacent to the other end of the radiation pattern.

Abstract: An intelligent stable power supply system includes a first power input module, a first non-return valve module, an active pulse wave generation unit, a DC power processing unit, and a control unit. When the control unit determines that a first voltage value is less than a first predetermined value or greater than a second predetermined value, and a second voltage value is between the first predetermined value and the second predetermined value, the control unit firstly controls the first non-return valve module being from an on state to an off state, and then controls the second non-return valve module being from an off state to an on state so that a power signal of the second power input module flows into the active pulse wave generation unit and the DC power processing unit to output a DC power signal.

Abstract: Disclosed is a phase demodulator, which includes a transmitter that outputs a reference signal to a target, a receiver that receives a target signal generated in response to the reference signal from the target, and a demodulation processor that demodulates the target signal, and the demodulation processor includes a phase controller that outputs a first phase signal based on the reference signal, a phase shifter that delays a phase of the first phase signal to output a first delayed signal, a mixer that outputs a first mixing signal based on the target signal and the first delay signal, and an amplifier that outputs a first feedback signal generated by amplifying the first mixing signal to the phase controller.

Abstract: An energy storage system comprises: an alternating-current/direct-current converter; a battery; a booster; a direct-current/alternating-current converter; a power control unit; an inductor having one terminal connected to a supply terminal to which normal alternating-current power is supplied; a switching unit having one terminal connected to the other terminal of the inductor and having the other terminal connected to an input/output terminal; a current determination unit which compares an inductor current flowing through the inductor with a power recovery limit current determined by a user; and a switching control unit.

Abstract: According to the present disclosure, a filter for reducing electromagnetic noise discharged through a line connected to the positive terminal B(+) of the battery is designed, but there is a problem that noise is rather introduced through this filter. However, in the filter circuit of the present disclosure, noise reversely introduced through the filter may be blocked by arranging an inductor for the filter in an expected inflow path of noise.

Abstract: A capacitor-insulated semiconductor relay includes an RC oscillation circuit, a waveform regulation circuit, a booster circuit, a charging/discharging circuit, and an output circuit. The RC oscillation circuit generates first and second signals that are inverse in phase to each other. The waveform regulation circuit increases rise and fall times of the first signal, and rise and fall times of the second signal. Output signals from the waveform regulation circuit are respectively inputted to first and second high dielectric strength capacitors and that are provided in the booster circuit and connected in parallel to each other. The booster circuit receives the output signals from the waveform regulation circuit to generate a predetermined voltage. The output circuit is driven based on the predetermined voltage.

Abstract: A system to power pressure pumps and auxiliary equipment for oil and gas operations. The system includes a mobile system controller and energy storage unit electrically connected to pressure pumping and auxiliary loads. The system can also include a power generation source. One application of the technology is to pump fluids to an oil and gas end user which can be an oil or gas well, pipeline or plant. The system can be modularized and can be fully mobile and transportable by a variety of means.

Abstract: According to certain aspects of the disclosure, an uninterruptible power supply is provided comprising an input, a backup power supply, an output configured to provide output power from the input and/or the backup power supply, a sensor, a relay, and a controller coupled to the sensor and the relay and being configured to determine, based on stored relay specifications, a manufacturer total estimated relay lifetime, receive operational information indicative of operational parameters of operation of the relay from the sensor, the operational information including a current conducted by the relay, determine, based on the operational information, an effective number of relay cycles consumed by the operation of the relay, determine a modified number of remaining relay cycles based on a difference between the manufacturer total estimated lifetime and the effective number of relay cycles consumed, and output remaining relay lifetime information indicative of the modified number of remaining relay cycles.

Abstract: A circuit includes a programmable frequency divider which receives a high-speed clock, fin, as an input and which provides a modulated reference clock as an output; a Sigma-Delta modulator which receives a Frequency Control Word (FCW) and which is connected to the programmable frequency divider to receive the modulated reference clock as a sample clock and to control an average frequency of the modulated reference clock; and an integer-N Phase Lock Loop (PLL) which receives the modulated reference clock and outputs a clock output.

Abstract: A phase-locked loop (PLL) includes a phase-frequency detector that compares a reference signal to a feedback signal. The difference in phase between the reference signal and the feedback signal is encoded as digital pulses on one or more outputs of the phase-frequency detector. The digital output pulses from the phase-frequency detector are duplicated and delayed multiple times in a non-overlapping manner before being input to the loop filter or voltage controlled oscillator (VCO) of the PLL.

Abstract: An oscillator circuit includes a first comparator that outputs a first signal indicative of a comparison result between an input potential and a threshold, a second comparator that outputs a second signal indicative of a comparison result between an input potential and the threshold, a RS flip-flop circuit that receives the first signal and the second signal and outputs first and second oscillation signals, a first charge/discharge unit that charges and discharges a first capacitor based on the first oscillation signal, a second charge/discharge unit that charges and discharges a second capacitor based on the second oscillation signal, a first dummy switch controlled to be on and off according to the second oscillation signal and adding a predetermined capacity to a first node, and a second dummy switch controlled to be on and off according to the first oscillation signal and adding a predetermined capacity to a second node.

Abstract: Disclosed is a phase demodulator, which includes a transmitter that outputs a reference signal to a target, a receiver that receives a target signal generated in response to the reference signal from the target, and a demodulation processor that demodulates the target signal, and the demodulation processor includes a phase controller that outputs a first phase signal based on the reference signal, a phase shifter that delays a phase of the first phase signal to output a first delayed signal, a mixer that outputs a first mixing signal based on the target signal and the first delay signal, and an amplifier that outputs a first feedback signal generated by amplifying the first mixing signal to the phase controller.