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Patent # Description
US-1,028,4144 Amplifier circuit of high response speed and related clamping method
An amplifier circuit includes an input stage, having a positive input end and a negative a negative input end, for generating a pair of differential signals...
US-1,028,4143 Quartz crystal unit, quartz crystal oscillator and electronic apparatus
In a quartz crystal unit, the unit comprising a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, and first and second quartz...
US-1,028,4142 Electrode for a microelectromechanical device
A microelectromechanical device structure comprises a supporting structure wafer. A cavity electrode is formed within a cavity in the supporting structure...
US-1,028,4141 Apparatus and method for compensating a load-pulled oscillator
A load pulled oscillator circuit. The load pulled oscillator circuit comprises: i) an active circuit comprising a load pulled oscillator transistor, the active...
US-1,028,4140 Smart sensor devices for measuring and verifying solar array performance and operational methods for use therewith
A device comprises a platform constructed and arranged to be mounted to one or more solar array modules and one or more solar irradiance sensors on the platform...
US-1,028,4139 Soiling measurement system for photovoltaic arrays
A system for measuring the power or energy loss in a photovoltaic array due to soiling, which is the accumulation of dust, dirt, and/or other contaminants on...
US-1,028,4138 Solar tracker having a bidirectional limit switch device
The solar tracker having a bidirectional limit switch device comprises at least one solar panel (10) supported on a pivoting structure (12) tiltable in opposite...
US-1,028,4137 Brackets for installing building attachments
Roof brackets for attaching a structure such as a patio cover to a building, and methods for installing the brackets. The brackets have a saddle for receiving a...
US-1,028,4136 Narrow flashing for waterproof mounting of solar panels to a roof
Improved versions of flat flashings are used for waterproofing mounting hardware that holds photovoltaic solar panels on a roof; typically, such a roof is a...
US-1,028,4135 Solar panel mounting apparatus and system
An aspect of the present disclosure provides solar panel mounting and charging system comprising a hub and a girder assembly. The hub may comprise a plurality...
US-1,028,4134 Method for controlling a fan module of a server rack and controller unit for implementing the same
A method for controlling a fan module mounted in a region of a server rack. The method is implemented by a controller unit including a RMC and a region...
US-1,028,4133 Inverter device and outdoor unit of heat pump device
An inverter device converts DC to AC and supplies power to a load (motor), and includes a temperature sensor that directly or indirectly detects a temperature...
US-1,028,4132 Driver for high-frequency switching voltage converters
A drive includes: an inverter power circuit that applies power to an electric motor of a compressor from a direct current (DC) voltage bus; and a power factor...
US-1,028,4131 Motor-driven compressor for a vehicle
A motor-driven compressor for a vehicle includes a housing, a compression unit, a motor, and an inverter device. The inverter device includes an inverter...
US-1,028,4130 PSC motor having multiple speed and voltage configurations
A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start...
US-1,028,4129 Three-phase variable reference pulse width modulation
A system includes a three phase AC or brushless DC motor, an inverter and a controller. The inverter is electrically coupled to the motor. The controller is...
US-1,028,4128 Controller for increasing torque output of electric motors
A motor includes a stator comprising windings configured to be energized, and a rotor electromagnetically coupled to the stator and configured to turn relative...
US-1,028,4127 Systems and methods for reducing DC-link oscillations
In an example embodiment, a method of controlling an electric machine includes obtaining an estimated position waveform, the estimated position waveform being...
US-1,028,4126 Method of generating electricity by an alternator and a generator using the same
A method of generating electricity by an alternator and a generator is disclosed. The method includes: connecting in series stator coils of two multi-pole...
US-1,028,4125 Lifing and performance optimization limit management for turbine engine
A control for a multi-shaft turbine engine system using electrical machines seeks optimal system performance while accommodating hard and soft component limits....
US-1,028,4124 Motor diving circuit
A motor driving circuit for receiving a control signal to output at least one output current for driving a motor is provided. The motor driving circuit includes...
US-1,028,4123 Motor unit
A motor unit includes a motor; a driving circuit that supplies a driving current to the motor; a shunt resistor; a rotation command input terminal; a pulse...
US-1,028,4122 Method for stopping a compressor and compressor of a refrigeration appliance
A compressor of a refrigeration appliance includes a motor, in particular a BLDC motor, and a controller for stopping the motor. The controller is configured to...
US-1,028,4121 Permanent magnet motor with absolute rotor position detection
An IPM motor in which the absolute position of the rotor may be determined is disclosed. The IPM motor includes asymmetries in both the rotor and the stator....
US-1,028,4120 Transmitting device and method for wireless transmission of measured parameters
A transmitting device for wireless transmission of measured parameters, which comprises a microcontroller controlling pulse generating means so that said pulse...
US-1,028,4119 Power generating element
There is provided a power generating element which is capable of converting vibration energy in various directions into electric energy without waste and less...
US-1,028,4118 Two-axis angular pointing device and methods of use thereof
A two-axis angular pointing device includes a pivot bearing configured to support a payload. A first actuator is positioned to contact the payload at a first...
US-1,028,4117 Buckling wave disk
A power conversion device has a buckled wave disk that has an axis and is radially compressed between a hub and a wave ring. The buckled wave disk is buckled in...
US-1,028,4116 Drive mechanism
When an actuator using a conventional piezoelectric element is used as a general-purpose mechanical component, such as a linear actuator and an electric...
US-1,028,4115 Inverter system
An inverter system includes an input inverter including a positive and a negative DC input terminals and first and second AC output terminals; and a...
US-1,028,4114 Modulation method for inverter AC waveform
The present invention discloses a modulation method for inverter AC waveform. The detailed steps of the modulation method comprise: generating an AC waveform...
US-1,028,4113 Power conversion device performing DC/AC power conversion via intermediate bus, and control method thereof
This power conversion device performs DC/AC power conversion via an intermediate bus, and includes: a first DC/DC converter provided between a DC power supply...
US-1,028,4112 Circuit arrangement for use in a power conversion stage and a method of controlling a power conversion stage
A circuit arrangement for use in a power conversion stage and a method of controlling a power conversion stage includes at least two electronic devices...
US-1,028,4111 Power conversion apparatus having connection conductors having inductance which inhibits ripple current
A power conversion apparatus includes a first power conversion circuit including a first switching element, a second power conversion circuit including a second...
US-1,028,4110 Power supply having four quadrant converter and techniques for operation
A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC...
US-1,028,4109 Power module having control substrate mounted above power substrate with control substrate drivers located...
An electronic device includes a first substrate, a wiring substrate (second substrate) disposed over the first substrate, and an enclosure (case) in which the...
US-1,028,4108 Three-phase boost rectifier circuit and control method thereof, and an uninterrupted power supply
The invention relates to a three-phase boost rectifier circuit and a control, method thereof, and an uninterrupted power supply which contains at least first...
US-1,028,4107 Rectifying bridge control circuit
An AC/DC converter includes a first terminal and a second terminal to receive an AC voltage and a third terminal and a fourth terminal to deliver a DC voltage....
US-1,028,4106 Power adapter
An efficient, high density, inline converter module includes a power conversion circuit and an input wiring harness for connecting the input of the power...
US-1,028,4105 Power converter
A power converter (1) includes: planar semiconductor modules (10) each having a resin sealing part (16) in which a semiconductor element (11), conductive...
US-1,028,4104 Integral inverter and solar cell module including the same
Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar...
US-1,028,4103 Power converter operable during a fault condition
A power converter includes first and second DC terminals between which the power converter is operable to generate a voltage difference. The power converter...
US-1,028,4102 Power conversion apparatus
A power conversion apparatus including a transformer, a synchronous rectification (SR) transistor and an SR control circuit is provided. A first terminal of a...
US-1,028,4101 Switching power supply apparatus and semiconductor device
A switching power supply apparatus includes a PFM control circuit that outputs a clock signal Set such that a switching frequency of a switching element varies...
US-1,028,4100 Method and apparatus for implementing an unregulated dormant mode with an event counter in a power converter
A power converter includes an energy transfer element coupled between an input and an output of the power converter. A switch is coupled to the energy transfer...
US-1,028,4099 Hybrid power converters combining switched-capacitor and transformer-based stages
A hybrid power converter circuit includes a switched-capacitor power converter stage and a pulse-width modulation (PWM) or resonant output circuit coupled to a...
US-1,028,4098 Load current adjusting circuit and adjusting method thereof
A load current adjusting circuit can include: a counter configured to generate first and second digital signals in accordance with a pulse signal, where a...
US-1,028,4097 Apparatus and efficiency point tracking method for high efficiency resonant converters
A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first...
US-1,028,4096 Current converter with control on the primary winding side and compensation of the propagation delay
A control circuit controls a switch of a switching current converter receiving an input quantity, with a transformer having a primary winding and a sensor...
US-1,028,4095 Method and apparatus for phase current balancing in multi-phase constant on-time buck converter
A multi-phase DC-to-DC buck converter for receiving an input voltage and delivering an output voltage to a load by splitting the load current between a...
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