Abstract: A circuit device includes a first terminal to be coupled to one end of a resonator, a second terminal to be coupled to another end of the resonator, an amplifying element configured to amplify a signal from the first terminal to output the signal amplified to the second terminal, a first resistor element disposed on a signal path between an input node and an output node of the amplifying element, a capacitance element disposed on a signal path between the first terminal and the input node, and a first switch element configured to switch electrical coupling between the input node and a ground.

Abstract: An actuator is provided with a tubular actuator element and a supporting body which supports an inner peripheral surface of the actuator element. An internal pressure of the actuator element is higher than an external pressure of the actuator element.

Abstract: A modular wireless power transfer system includes a first wireless transmission system and a wireless repeater system. The first wireless transmission system is configured to receive input power from an input power source, generate AC wireless signals, and couple with the wireless repeater system. A magnetic sensor system in the first wireless transmission system senses a magnet of specific strength in a specific location on the wireless repeater system. Based on the presence of absence of such a magnet, the first wireless transmission system allows or disallows, respectively, the transmission of the AC wireless signals to the wireless repeater system.

Abstract: A variable capacitor circuit includes a capacitor block including a first varactor element comprising a first transistor having a first size, a second varactor element comprising a second transistor having a second size different from the first size, a first terminal commonly connected to a source and a drain of the first transistor, a second terminal commonly connected to a source and a drain of the second transistor, and an RC circuit connected to a gate of the first transistor and a gate of the second transistor.

Abstract: There is configured an oscillator characterized by including an outer package having a housing space, an inner package housed in the housing space, a resonator element housed in the inner package, a heater element housed in the housing space, and fixed to the inner package, an oscillation circuit configured to oscillate the resonator element, a conducting member configured to electrically couple the inner package and the heater element to each other, and a first bonding wire configured to couple the heater element and the outer package to each other, and configured to electrically couple the conducting member and the outer package to each other.

Abstract: There is configured an oscillator including a resonator, and a circuit device, wherein the circuit device includes a first terminal, a storage circuit configured to store data corresponding to an external signal input from the first terminal, an oscillation circuit configured to generate an oscillation signal using the resonator, a counter circuit configured to count a period in which the external signal has a first polarity and a period in which the external signal has a second polarity using a clock signal generated based on the oscillation signal, and a processing circuit configured to write the data in the storage circuit based on a counting result of the counter circuit.

Abstract: A circuit device includes an oscillation circuit configured to generate an oscillation signal, a first pre-driver disposed in a posterior stage of the oscillation circuit, a first output driver disposed in a posterior stage of the first pre-driver, a first regulator configured to supply a first regulated voltage to the first pre-driver, and a second regulator configured to supply a second regulated voltage to the first output driver, wherein the second regulator is shorter in transient response time than the first regulator.

Abstract: An oscillator in which crosstalk can be reduced is provided. An oscillator includes a SQUID, a transmission line connected to the SQUID, a ground plane, and a first connection circuit disposed in a vicinity of a node of an electric field of a standing wave that is generated when the oscillator is oscillating, the first connection circuit connecting parts of the ground plane located on both sides of the transmission line to each other.

Abstract: An electric power supply system includes a battery, an electric power receiving apparatus that is coupled to the battery in parallel with a load and receives and supplies external electric power to the battery, a switching apparatus that allows or cuts off connection of the electric power receiving apparatus and the load to the battery and is switchable between a normal state and a current suppression state when the connection is allowed, and a control apparatus that permits a load driving mode if the external electric power is receivable. In the load driving mode, the control apparatus controls an electrical connection state of the electric power supply system to a first connection state in which the electric power receiving apparatus and the load are coupled to the battery via the switching apparatus in the current suppression state, depending on output electric power of the electric power receiving apparatus.

Abstract: A division factor generator of a feedback divider block in a fractional-N phase locked loop (PLL). The division factor generator is enabled to operate with larger values of division factors without increased complexity of an internal modulator core implemented, for example, as a delta-sigma modulator (DSM) having a signal transfer function (STF), wherein the STF always generates only an integer value as an output in response to an integer value received as input.

Abstract: A resonance device includes a first substrate formed of a semiconductor material or a glass material and having a recess which has an opening in a first main surface, a second substrate bonded to the first main surface and configured to close the opening of the recess, and a resonator element housed in the recess. An inner surface of the recess includes a side surface, a bottom surface, and a connection surface connecting the side surface and the bottom surface, the connection surface is a curved surface, and L1<L2, wherein L1 is a length of the connection surface in a first direction, and L2 is a length in a second direction orthogonal to the first direction.

Abstract: In an integrated circuit device having a microelectromechanical-system (MEMS) resonator and a temperature transducer, a clock signal is generated by sensing resonant mechanical motion of the MEMS resonator and a temperature signal indicative of temperature of the MEMS resonator is generated via the temperature transducer. The clock signal and the temperature signal are output from the integrated circuit device concurrently.

Abstract: A vehicle power supply system and a method for operating the same are provided. The vehicle power supply system includes a main battery and a sub-battery to supply power to an electronic load inside a vehicle, and a controller to control supplying of the power to the electronic load using at least one of the main battery or the sub-battery, by monitoring the main battery and the sub-battery. The controller determines whether the main battery allows entrance into Idle Stop and Go, determines whether the sub-battery is able to assist the ISG, and controls the sub-battery to assist the main battery to supply the power to the electronic load, when the main battery allows the entrance into the ISG, when the sub-battery is able to assist the ISG, and when entering into the ISG.

Abstract: A controlling circuit for ring oscillator is provided. A first transistor and a second transistor of a first conductive type are coupled in series and between a node and a first power source. A third transistor and a fourth transistor of a second conductive type are coupled in parallel and between the node and a second power source. The node is coupled to an input of a delay chain of the ring oscillator. The second and third transistors are coupled in series. Gates of the second and third transistors are configured to receive an output signal of the delay chain. When the first transistor is turned off and the fourth transistor is turned on, the node is pulled to a first logic level from a second logic level in order to align a phase of a waveform of the ring oscillator.

Abstract: In an embodiment a ring oscillator circuit includes a chain of cascade-coupled inverter stages coupled between an oscillator supply voltage node and a reference voltage node, the oscillator supply voltage node configured to provide an oscillator supply voltage, a current generator circuit coupled between the oscillator supply voltage node and a system supply voltage node configured to provide a system supply voltage, the current generator circuit being configured to inject a current into the oscillator supply voltage node and a biasing circuit including a first bias control transistor and a second bias control transistor coupled in series between the reference voltage node and the oscillator supply voltage node, wherein the first bias control transistor is configured to selectively couple the reference voltage node and the oscillator supply voltage node in response to the oscillator control signal being indicative that the ring oscillator circuit is in an inactive operation state.

Abstract: An oscillator circuit includes an oscillator transistor (Q1) having respective first, second, and control terminals, the oscillator transistor being arranged to generate a microwave oscillating signal at the first terminal. A surface integrated waveguide resonator (Y1) is connected to the second terminal of the oscillator transistor (Q1). An active bias circuit portion (202) including a negative feedback arrangement is between the first terminal of the oscillator transistor (Q1) and the control terminal of the oscillator transistor (Q1), the active bias circuit portion being arranged to supply a bias current to the control terminal of the oscillator transistor (Q1). The bias current is dependent on a voltage at the first terminal of the oscillator transistor (Q1) multiplied by a negative gain.

Abstract: An integrated circuit includes an inverter, first and second capacitors, a resistor, and a transistor. The inverter has an input and an output. The first capacitor is coupled to a ground. The transistor has a first transistor terminal, a second transistor terminal, and a control input. The first transistor terminal is coupled to the first capacitor and the second transistor terminal is coupled to the input of the inverter. The second capacitor is coupled between the output of the inverter and the ground. The resistor is coupled between the output of the inverter and the first transistor terminal.

Abstract: A ring oscillator including: an oscillation circuit including an even number of inverters connected in a ring configuration, the oscillation circuit outputting a clock signal; plural potential fixing circuits respectively connected between pairs of the inverters, each of plural potential fixing circuits being switchable between a connected and a disconnected state in response to a first control signal; and an adjustment circuit that adjusts a drive capability of the inverters based on a second control signal, wherein, during startup, the drive capability is controlled to be a first capability, in which the potential fixing circuits are connected, by the first control signal, and wherein, after a predetermined time has elapsed after the first control signal is output, the drive capability is controlled to be a second capability, higher than the first capability, in which the potential fixing circuits are disconnected, by the second control signal.

Abstract: A wireless power transfer system is provided for a peripheral device, including a wireless receiver system in the peripheral device, the wireless receiver system having a receiver antenna configured to receive the wireless power signals and wireless data signals via inductive coupling with the transmission antenna. The receiver antenna includes a first central opening and a shield adjacent the receiver antenna, the shield having therein a second central opening, with a sensor located within both the first and second central openings, the sensor being configured to sense a position of the peripheral device.

Abstract: Oscillator quick-startup circuit and method in which a voltage step is applied to a resonator (crystal) resulting in ringing which is amplified and fed into a locking circuit which locks to it, such as a programmable delay circuit. Once locking is complete, then the circuit is switched into a standalone oscillator mode, having a feedback path, the output of this injection oscillator energizes the resonator for achieving quick startup of a primary oscillator, in response to it automatically adjusting injection oscillator frequency to match the frequency of the resonator. A digital circuit controls the configuring of the circuit for applying the voltage step, adjusting the locking circuit, and then switching into a standalone oscillator mode.