Abstract: An electric power supply management method is configured to electrically power electrical equipment of a crane, via a conversion circuit, from a primary power supply source capable of providing a primary power and from a rechargeable secondary power supply source capable of providing a secondary power. The electric power supply management method includes monitoring of a requested general power which corresponds to a power demanded by all the electrical equipment, and a monitoring of a charge level of the rechargeable secondary power supply source.

Abstract: An electronic oscillator circuit and a method for controlling an oscillation frequency of a ring oscillator circuit. The circuit includes a plurality of inverter stages each Including an inverter and a trans-resistance switch circuit configured to switch on the inverter during an operation of the electronic oscillator circuit thereby facilitating the inverter to generate an inverter output signal in response to an inverter input signal fed to the inverter; wherein the inverters in the plurality of the inverter stages are connected to form a ring oscillator circuit.

Abstract: Disclosed is technology related to a signal synthesis apparatus that corrects an offset between a closed loop and an open loop to output a frequency-modulated signal. The signal synthesis apparatus includes a VCO configured to output a frequency signal in response to an input voltage, an energy storage unit configured to output a voltage using stored energy, a VCO input selector configured to connect the VCO to input of the energy storage unit in the case of a closed loop mode and connect the VCO to output of the energy storage unit in the case of an open loop mode, and a digital controller configured to control an operation mode of the VCO input selector and transmit an offset control signal for adjusting an offset of a voltage output from the energy storage unit to the energy storage unit.

Abstract: An electric work vehicle includes a power distribution unit (PDU). The PDU includes a first PDU housing to house a positive rail and a second PDU housing to house a negative rail, and the first PDU housing is spaced away from the second PDU housing. The first PDU housing is located on a first side of a centerline of the electric work vehicle that extends in a front-rear direction of the electric work vehicle, and the second PDU housing is located on a second side of the centerline of the electric work vehicle opposite to the first side of the centerline of the electric work vehicle.

Abstract: Provided is a method for controlling the bias current, IPIERCE, of an oscillator. The method includes acquiring or determining a digital representation encoding a bias current. The method also includes carrying out an algorithm to update the digital representation if the oscillation amplitude is measured, by one or more peak detectors, to be outside of upper and lower thresholds. Also provided is an apparatus arranged to control the bias current of an oscillator using this method, the apparatus including one or more peak detectors and a current digital to analogue converter.

Abstract: One or more examples relate, generally to supply voltage based or temperature based fine control of a tunable oscillator of a PLL. An associated method includes: receiving one or more values indicative of temperature or supply voltage of a phase-locked loop (PLL); setting a digital fine-tuning control code to an initialization code, the initialization code at least partially based on the received one or more values indicative of temperature or supply voltage of the PLL, wherein the digital fine-tuning control code for setting a number of tuning-elements within a fine bank of a tunable oscillator; and starting, with the set digital fine-tuning control code, a process to set an initial frequency of the oscillator at or close to a target frequency. The process may be a calibration process performed before initially acquiring lock or re-acquiring lock.

Abstract: An atomic oscillator of the present disclosure includes: a gas cell in which an alkali metal atom is encapsulated; a light generating unit emitting emission light onto the gas cell; a light detecting unit detecting transmitted light passed through the gas cell; and a control device determining a resonance frequency of the emission light based on a light amount of the detected transmitted light. The control device stores correspondence information in which a feature value of a transmitted light spectrum is associated with a state of the emission light, performs estimation processing to extract the feature value of the transmitted light spectrum from the detected transmitted light and estimate the state of the emission light corresponding to the extracted feature value of the transmitted light spectrum based on the correspondence information, and controls an emission state of the emission light based on the estimated state of the emission light.

Abstract: A transitional USB receptacle has one USB PD port and one USB-C port (non-PD). The receptacle includes flyback topology for AC/DC conversion, a bypass circuit, a buck converter, and a USB controller that determines the voltage demands of external devices connected to the USB-C and PD ports. The flyback topology uses a transformer with two sets of windings that produce different output voltages. The bypass switch is configured to ensure that only voltage signals under 10V are input to the buck converter, resulting in a different one of the transformer output voltages being input to the buck converter under different load demands. This enables the buck converter to more efficiently produce a 5V at the USB-C port when the USB PD port needs to simultaneously supply either 15V or 20V, and also enables the buck converter to more efficiently produce a 5V or 9V output at the USB PD port.

Abstract: A silicon-based atomic clock for use in an electronic device structured to employ spin-dependent recombination in the silicon crystal. In at last one implementation, a source of energy configured to excite the impurity atoms within the silicon crystal includes a source of thermal energy but not a source of light or a source of broadband light that is not matched to said energy level transition of the impurity atoms.

Abstract: There is provided a crane including a crane body, and a mobile unit moving around the crane body. The crane body includes a power supply unit, and includes a power supply path member connected to the mobile unit and supplying power to the mobile unit from the power supply unit.

Abstract: Carrier signal generators are provided. The carrier signal generator includes a master processing module and a plurality of slave processing modules. Each slave processing module is used to control a corresponding one of universal power units of the UPS. The slave processing modules output, according to a synchronously received reference signal, control signals to control the universal power units to receive power from the mains or a rechargeable battery. When the mains is normal, each slave processing module synchronously generates a three-phase rectification control signal to rectify and output power from the mains. When the mains is abnormal, each slave processing module generates a first DC-DC control signal independently of the reference signal output by the master processing module, so as to convert and output power from the rechargeable battery. The carrier signal generator has improved compatibility and improved current conversion quality and is low cost.

Abstract: An oscillator includes a substrate, and a plurality of oscillation structures and a power feed structure. The power feed structure includes a power source and a bias supply unit, the oscillation structures each include one antenna and an N piece of a semiconductor element electrically connected to the antenna. The semiconductor elements exhibit negative resistance characteristics when driven by the power feed structure, and out of the N piece thereof, a P piece thereof are connected in parallel, and an S piece thereof are connected in series, an F piece thereof are supplied with bias in the forward direction, and an R piece thereof are supplied with bias in a reverse direction. The semiconductor element in one of the oscillation structures exhibits asymmetrical current-voltage properties between forward bias and reverse bias. At least one of the N, P, S, F, and R differs from another.

Abstract: Circuits and methods are provided for an input hysteresis buffer that includes a voltage limiting unit, a voltage detecting unit connected to the voltage limiting unit, and a supply tracking bias unit connected to the voltage detecting unit. The voltage liming unit comprises a first voltage limiting unit and a second voltage limiting unit. The voltage detecting unit comprises a first voltage detecting unit configured to detect the presence of a first threshold voltage in an input signal, and a second voltage detecting unit configured to detect the presence of a second threshold voltage in the input signal. The supply tracking bias unit is configured to supply a control signal to the voltage detecting unit.

Abstract: A voltage-controlled oscillator includes a piezoelectric element, a first package, an electronic element, and a second package. The first package contains the piezoelectric element. The second package contains the electronic element and the first package. The second package includes a base, and a lid. The electronic element and the first package are mounted in the base. The lid hermetically seals the electronic element and the first package together with the base. The base includes a substrate part, a first frame part, and a second frame part. The substrate part includes a first major face and a second major face opposite to the first face. The electronic element is mounted on the first major face. The first frame part includes a first frame face on which the first package is mounted. The first frame part is located on a peripheral edge of the first major face.

Abstract: A frequency reference device comprising a waveguide with a first end and a second end, a signal transmitter module for generating a high-frequency electromagnetic wave in the waveguide, and a signal receiver module for receiving the high-frequency electromagnetic wave in the waveguide. The component comprises a sealed enclosure, and said sealed enclosure is filled with a gas. The waveguide, first and second radiation coupling probes and the signal transmitter module and the signal receiver module are all located within said scaled enclosure.

Abstract: The techniques described herein relate to systems, apparatus, articles of manufacture, and methods for optimum loop gain calibration for clock data recovery and phase locked loop. An example apparatus includes a phase detector with a phase detector output and configured to generate an error signal representative of a difference between an input signal and a feedback signal. The apparatus further includes a calibrator circuit with a calibrator input coupled to the phase detector output and configured to determine correlation value associated with the error signal, and determine a gain value based on an adjustment of an absolute value of the correlation value by a pseudorandom binary sequence signal.

Abstract: A Voltage-Controlled Oscillator (VCO) includes a cross-coupled transconductance cell. A transformer comprising a primary coil and at least one secondary coil, wherein the primary coil is connected to the cross-coupled transconductance cell. A primary coil varactor is connected to the cross-coupled transconductance cell in parallel to the primary coil. A variable inductive tuning component connected to the at least one secondary coil. A mode switch connected to the at least one secondary coil and configured to select a frequency mode of operation of the VCO by engaging or disengaging the variable inductive tuning component from operation with the primary coil varactor to generate oscillation at a center frequency of the VCO.

Abstract: The present disclosure provides an isolation integrated circuit, a carrier frequency control circuit and a modulation signal generation method. The isolation integrated circuit includes a carrier frequency generation circuit, a carrier frequency control circuit and a modulation circuit. The carrier frequency generation circuit generates a carrier frequency signal. The carrier frequency control circuit detects enabling periods and disabling periods of an input signal, controls the carrier frequency generation circuit to output the carrier frequency signal during the enabling periods, and controls the carrier frequency generation circuit to stop outputting the carrier frequency signal in the output periods of timing pulses during the disabling periods. The timing pulses are generated in response to detection of entering the disabling periods.

Abstract: A power supply system includes a multitude of independent electrical systems each comprising one or more power blocks, wherein each power block is configured to provide a respective power output and a converter comprising a multitude of inputs coupled to the multitude independent electrical systems and comprising a multitude of outputs coupled to a multitude of independent loads, the converter configured to aggregate the power output of each of the multitude of independent electrical systems and to output direct current (DC) power to the multitude of independent loads through the multitude of outputs based on the aggregated power output. The power supply system includes a power controller coupled to the converter and configured to allocate power to each of the multitude of independent loads based on input power from each of the multitude of independent electrical systems and power consumption from each of the multitude of independent loads.

Abstract: Embodiments of the microwave amplification system are described. In an embodiment, a microwave amplification system includes a microwave amplifier that contains a paramagnetic material with an impurity. The impurity has a plurality of nuclear spin and electron spin-based energy levels. The system includes an input to receive a pumping signal which is transmitted to the microwave amplifier to cause a population inversion in the impurity and excite it to one of the nuclear spin and electron spin-based energy levels. The system further includes another input to receive an input signal to be amplified by the microwave amplifier, the input signal having a lower power than the pumping signal. Once transmitted to the microwave amplifier, the input signal is amplified by the excited state of the impurity in the microwave amplifier thereby generating an amplified signal.