Abstract: A driving circuit, comprising a power supply, a transistor unit and a feedback control circuit, is disclosed. The power supply is adaptor to provide an electric power to drive a load. The transistor unit comprises at least one load coupling end to couple to the load for adjusting an amount of current flowing through the load. The feedback control circuit controls an amount of the electric power provided by the power supply according to a voltage level of the least one load coupling end. Wherein, the feedback control circuit comprises an error amplifying circuit and a feedback control switch. The error amplifying circuit generates an error amplified signal according to the voltage level of the least one load coupling end, and the feedback control switch is coupled to an output of the error amplifying circuit and is switched between a turn-on state and a turn-off state based on a dimming signal.

Abstract: A conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit includes a comparator having a first input and a second input, and configured to provide a pulse-width modulated output in response to comparison of signals at the first input with signals at the second input. The output has a pulse width representative of a dimmer setting of a dimmer circuit. The circuit also includes a limiting circuit coupled to the comparator and configured to receive a rectified voltage and to provide a voltage-limited output in response to the rectified voltage to the first input of the comparator. The circuit also includes a threshold supply circuit configured to provide a threshold voltage to the second input of the comparator, and a filter coupled to the comparator. The filter is configured to convert the pulse-width modulated output of the comparator to the dimmer reference level signal.

Abstract: Embodiments of the present invention provide for the rapid reignition of a high intensity discharge lamp. In one embodiment of the invention, an apparatus for a fast reigntion of a high intensity discharge lamp is disclosed. The apparatus is comprised of a ballast operatively coupled to the lamp that is configured to receive power from a power supply. The apparatus is also comprised of a timer circuit that enters a timing phase and produces a quantum of timing information when the lamp ceases receiving power from the power supply. This timer circuit does not require external power during the timing phase. The apparatus is additionally comprised of a control circuit that receives the timing information and permits the ballast to reignite the lamp based on the information.

Abstract: In a lamp device 12 using a GX53-type cap 31 and also using an LED 56 as a light source, there is regulated an appropriate configuration of a metallic cover 32. A cap 31 and a lighting device 36 are arranged on an upper surface side of the metallic cover 32, and a substrate 33 on which the LED 56 is mounted is arranged on a lower surface side thereof. The metallic cover 32 has an approximately cylindrical shape with a maximum outer diameter D of 80 to 150 mm, a height H of 5 to 25 mm, and 2? (D/2) H/W, that is, an area of the outer peripheral surface per gross input power W to the lamp device 12 being in a range of 200 to 800 mm2/W. The gross input power W is 5 to 20 W.

Abstract: Provided is a method of controlling a vibration motor, in which there are provided: a unit that generates a drive signal for generating elliptic motion; a unit that switches the drive signal with a voltage from a power supply, and changes a pulse width of the drive signal; a unit that detects a current flowing in an electromechanical energy conversion element through the switching unit; a unit that detects a position and a velocity of an object to be driven; and a control unit that controls the respective units, and sets the velocity of the object to be driven. The control unit controls a frequency and the pulse width of the drive signal so as to exercise a maximum output characteristic with respect to a target velocity within a range in which the current detected by the current detection unit does not exceed a given limit value.

Abstract: The subject matter disclosed herein describes a system for controlling torque in a soft starter. In particular, torque ripple is reduced when transitioning between two different operating modes of a soft starter. A soft starter may include a first operating mode, designed for improved performance during low-speed operation of a motor, and a second operating mode, designed for improved performance during high-speed operation of the motor. However, transitioning between two different operating modes may result in significant transient currents in the motor, which, in turn, produce torque in the motor. The system described herein reduces this transient torque production in the motor.

Abstract: System and method for aligning and initiating rotation of a rotor in a motor. The motor may include the rotor and a plurality of pairs of electromagnets. The energy needed for alignment of the rotor of the motor may be used to generate the first movement in forced commutation. The energy needed for alignment may be combined with the initial energy to start the motor. The logic may be configured to align the rotor of the motor by energizing the three coils of the motor. Pulse width modulation may be applied to the first coil to control current on the coils; when a maximum PWM duty cycle is reached, the coil not required to rotate the correct direction may be released, thereby initiating motion in a rotor of the three phase motor. A rotation period may be determined. One or more pairs of electromagnets of the plurality of pairs of electromagnets may be excited at a first excitation level. The excitation level may be increased, over a second period of time, to a second excitation level.

Abstract: A drive system for a motor has a switching network for supplying three phases of power to a motor, and a control for the switching network. The control is programmed to provide a commutation with a positive offset, ahead of a current position, when driving in opposition to a load, and to use one of a zero or negative offset when the control drives the motor complementary to the load force. A method and system are also disclosed and claimed.

Abstract: An electric machine is disclosed comprising a first energy source, a second energy source, and a stator which comprises a first set of windings and a second set of windings. The electric machine has a rotor and a controller, the controller configured to control the first energy source to supply a first current to the first set of windings and control the second energy source to supply a second current to the second set of windings. The controller also detects an angular position of the rotor, detects the first current, detects the second current, and determines an optimum phase shift angle of the first current based on the angular position of the rotor, the first current, and the second current. The controller controls the first energy source based on the optimum phase shift angle to modify the first current supplied to the first set of windings.

Abstract: An electromechanical device includes: a magnet coil; a PWM driving circuit; and a control unit, wherein the control unit performs a first control of setting an excitation interval which is an interval in which a PWM drive signal is supplied to the magnet coil and a second control of changing a duty ratio of the PWM drive signal, and wherein the control unit performs an advance angle control of putting the phase of the center of the excitation interval earlier than the phase in which a counter-electromotive force generated in the magnet coil has the maximum value in the first control, and increases the duty ratio of the PWM drive signal in the second control so that a gain is greater than 100% when the gain is 100% at the time of generating the PWM drive signal so as to have a sinusoidal shape.

Abstract: A controller outputting a voltage instruction for drive control to a electric rotating machine includes a drive voltage instruction calculation section calculating drive voltage instructions for driving the electric rotating machine, a position estimation voltage generator generating position estimation voltage instructions for position estimation about the electric rotating machine, a noise reduction voltage generator generating noise reduction voltage instructions for reducing noise occurring from the electric rotating machine along with input of the position estimation voltage instructions to the electric rotating machine, and adders outputting, to a voltage application means, a voltage instruction obtained by adding the position estimation voltage instructions and the noise reduction voltage instructions to the drive voltage instructions.

Abstract: An electromagnetic pulse engine is disclosed. The engine includes a housing, a drum concentrically mounted within the housing and adapted to rotate therein, a plurality of permanent magnets mounted about an internal cylindrical wall of the drum, and a plurality of electromagnets mounted radially about an annular bearing. Successive permanent magnets of the plurality of permanent magnets have an opposing polarity facing inward, where at least one electromagnet of the plurality of electromagnets is adapted to be selectively energized and de-energized to attract a first permanent magnet and to repel a second permanent magnet to rotate the drum about the plurality of permanent magnets. In addition, the engine includes an axial shaft that is secured to the drum for rotating therewith, where the annular bearing supporting the plurality of electromagnets is secured against rotation relative to the axial shaft.

Abstract: An equalizer generates a control signal for adjusting, based on a difference between a target value for the state of an object and an actual measured value thereof, the state of the object to match the target value. A PWM modulation unit generates a PWM signal corresponding to the control signal generated by the equalizer. An H-bridge drive unit generates a drive current for driving a drive element that changes the state of the object in accordance with the PWM signal generated by the PWM modulation unit. A slew-rate control unit changes the current driving capability of the H-bridge drive unit in accordance with the control signal.

Abstract: A stepper motor controller includes control circuitry with control outputs and individual driver pulse width modulation circuitry. The individual driver pulse width modulation circuitry has individual driver pulse width modulation outputs and modulation control inputs coupled to the respective control outputs. The controller has a group of individual drivers, where each one has an individual driver input coupled to a respective one of the individual driver pulse width modulation outputs, and an individual driver output coupled to an individual driver terminal of the controller. The stepper motor controller has common driver pulse width modulation circuitry having a common driver pulse width modulation output. There is also a common driver having a common driver input coupled to the common driver pulse width modulation output and a common driver output coupled to a common driver terminal of the controller.

Abstract: There is provided a single-phase AC synchronized motor that does not need smooth of rectifier waves but stably performs shift from a starting operation to a synchronized operation. In the motor, based on detected signals of a position sensor, rectified current is reciprocally flowed to each direction of a single-phase coil which starts the motor. The motor includes a start-up operation circuit with a sensor starting period that increases a rotational speed until reaching to a first predetermined rotational speed; and a control device that controls operation of the motor as that shift to synchronized operation is performed when a rotational speed of a permanent magnetic rotor is reached to a second predetermined rotational speed nearby a synchronized rotational speed but not exceeding the synchronized rotational speed, and when the rise and fall of detected signals of the position sensor and the zero-cross point of AC current are approximately correspondent to each other.

Abstract: A contactless power charging system and an energy storage system including the same, the contactless power charging system including a contactless transformer configured to transmit power stored in a battery to a load, wherein the contactless transformer includes a primary core unit, the primary core unit including a first base portion, a projecting portion projecting from the first base portion, and a primary coil wound around the projecting portion; and a secondary core unit, the secondary core unit including a second base portion, a concave portion in the second base portion to receive the projecting portion, and a secondary coil on an inner surface of the concave portion, the secondary coil being configured to couple to the primary coil.

Abstract: Case or other portable container with an electric power supply and storage unit which can be recharged using solar energy or other energy sources, useful for providing electric power during open-air activities or for other uses, of the type which comprises a case or other preferably rigid or semi-rigid container (1), with the base body (101) and the lid (201) designed internally to house at least one solar panel and at least one electric power supply and storage unit (6) which can be recharged by means of said solar panel and which is provided with sockets so as to be able to supply electric user applications, characterized in that several solar panels (4) which can be folded in book form and wallet form are housed inside the said case (1) so that in the folded position the panels occupy an extremely small amount of space and in the open position the panels have a much larger exposed area, all of which being envisaged so that, also owing to the fact that more than one of the solar panels (4) is available, it

Abstract: Disclosed herein is solar power-generating equipment, including: a solar cell; a secondary battery; an electric power outputting portion; a display portion configured to display thereon information about an electric-generating capacity of the solar cell, and information about a state of charge of the secondary battery; and a control portion configured to cause the display portion to display thereon the information about the electric-generating capacity of the solar cell only for a predetermined time length, and cause the display portion to display thereon the information about the state of charge of the secondary battery only for a predetermined time length.

Abstract: A computer system to charge a rechargeable battery of an external device regardless of power on/off of the computer system when the external device having the rechargeable battery is connected, and a control method thereof. The computer system includes a connector having a terminal to which an external device is connected, a power supply to supply power to the connector, and a recognition signal generator to generate a predetermined recognition signal to initiate charging a rechargeable battery of the external device with power supplied from the power supply through the connector when the external device having the rechargeable battery is connected to the connector through the terminal. Thus, it is possible to charge the battery of the external device even when the computer system is powered off.

Abstract: A diagnostic device system has a weight-reduced rechargeable battery. When a portable radiographic apparatus and a portable X-ray source are carried to and used for imaging at a private home or a care home, the portable radiographic apparatus and the portable X-ray source are loaded on an automobile. When the charge amount of rechargeable batteries for operation housed in the portable radiographic apparatus or the portable X-ray source loaded on the automobile is low, or when there are plural destinations and the charge amount of the rechargeable batteries becomes low, a rechargeable battery for charging mounted on the automobile is used to charge the rechargeable batteries for operation while traveling. Because the rechargeable batteries for operation are charged while traveling, a large number of rechargeable batteries for operation does not need to be charged in advance, whereby the weight of the rechargeable batteries for operation can be reduced.

Abstract: A charger for providing power to an electronic device from an AC source, incorporating a battery to provide back-up power when no AC source is available. The charger uses a first voltage converter with a smoothing characteristic such that there are periods during each AC cycle, during which the first DC voltage falls substantially from its maximum value, and a second voltage converter, outputting power at a second DC voltage to the electronic device. A battery comprising at least one cell is connected at the output of the first converter such that current can be received by the battery from the first converter and supplied by the battery to the second converter. A controller is used, configured to charge the battery from the first converter, or to supply current from the battery to the second converter for output to the device, during different parts of the AC cycle.

Abstract: A vehicle and a power source are connected to each other at the time of charging by a charging cable including a signal line for transmitting a pilot signal for communication of information and a power line for transmitting electric power. The pilot signal has voltage changeable between a high level and a low level having a lower potential than the high level. The charging connector is provided with a power terminal to be supplied with the electric power from the power line, a signal terminal receiving the pilot signal transmitted from the signal line, and a light emitting diode having one end coupled to a signal of the signal line and the other end coupled to a node of a higher potential than the low level, with the forward direction thereof from the other end to the one end.

Abstract: Exemplary embodiments are directed to an electronic device for enabling a temperature of a battery unit to be sensed with a wired power charger or a wireless power. A device may include a wireless power receiver and a wired charging module operably coupled to the wireless power receiver. The device may also include an interface configured to couple to a battery unit and for selectively enabling one of the wireless power receiver and the wired charging module to determine a temperature of the battery unit.

Abstract: A wireless charge is provided for use in an automobile and includes a main body having a transmitter circuit and a power member. The main body has a surface to which a clip section is mounted so that coupling with an electronic device can be realized through the clip section. The power member is electrically connectable with a cigarette lighter of the automobile and the main body, whereby the power member transmits the electrical power supplied from the cigarette lighter to the transmitter circuit to allow the transmitter circuit to convert the electrical power into an AC signal, which is transmitted in a wireless manner to a receiver circuit of the electronic device to electrically charge a rechargeable battery of the receiver circuit. As such, a user may perform electrical charging of the electronic device during the travel of the automobile.

Abstract: A system of energy storage and charging usable in vehicles and other applications that eliminate the battery capacity and automotive range issues is described. In our invention, vehicles are equipped with charging mechanisms to charge and recharge onboard batteries using wireless electricity and power transmission using magnetic resonant coupling between tuned electromagnetic circuits. The batteries may be charged using wireless charging systems installed along the roads while the vehicle is in use on the road. Charging system may optionally utilize infrared laser beam radiation to transmit power for charging the batteries on board a vehicle while it is in use as well. The onboard vehicle batteries may also be charged when the vehicle is not being driven either by plugging in the vehicle into wall electricity using wired power connection or may be wirelessly charged using the magnetic resonant coupling.

Abstract: A universal charging device, the device comprising: a charging pack including at least one of an AC terminal for inputting an AC power, an AC/DC converter for rectifying the AC power to a DC power, a DC terminal for outputting a DC power of a first power value, and a charging pack switch for turning on/off an output of the DC power.

Abstract: An electrical assembly selectively receives power from an external power supply. The electrical assembly includes a base that at least partially defines a tool port and a battery port and an electrical tool selectively coupled to the tool port. A rechargeable battery pack is selectively coupled to the battery port and a circuit is supported by the base and is operable to direct power to the tool port and the battery port such that the external power provides power to the electrical tool to operate the electrical tool and to recharge the rechargeable battery pack.

Abstract: A battery management system can include a battery having a plurality of cells, a plurality of devices coupled to the battery, and a control unit coupled to a first device of the devices. The devices can assess the statuses of the cells. The control unit can communicate with a destination device of the devices via a default path and can communicate with the destination device via a backup path if an undesirable condition occurs in the default path.

Abstract: A battery power source device includes a battery block configured by parallel-connecting a plurality of series-circuits each constituted of a secondary battery, and a cut-off element which is operable to be in a cut-off state where a charging and discharging path of the secondary battery is cut off; a current limit value setting section which sets a current limit value representing an upper allowable limit of an entire current value as a current value of a current flowing through the battery block; and an available battery number detecting section which detects the number of cut-off elements which are not in the cut-off state, out of the plurality of cut-off elements included in the battery block, as the available battery number. In this arrangement, the current limit value setting section sets the current limit value so that the current limit value is decreased, as the available battery number detected by the available battery number detecting section is reduced.

Abstract: The present invention relates to a multi-purpose battery charging circuit configuration able to be selectively in a simple charge mode when intended for low-end solutions (option 3) or in a charge-and-play mode when intended for medium- and high-end solutions (options 1 and 2 respectively), while maintaining the supply voltage of any portable and mobile electronic devices with an acceptable noise level. The selection will be made possible by the use of multiplexers (MUX1, MUX2). If the option 1 is chosen, the bi-directional switching device (210) will be controlled by a driver circuit (340) for allowing the current which flows through it towards the battery (20) to strongly increase and thereby maintaining the voltage across the circuitry (10) at a value slightly greater than the voltage across the battery (20).

Abstract: An electrical generator has an engine that provides a mechanical output that is converted to electrical current by an alternator. The engine is started by a battery-powered motor starter. The battery is charged during running of the electrical generator by a portion of the electrical current output by the alternator. The battery is charged according to a charging profile based on the temperature of the battery at start up of the electrical generator.

Abstract: Disclosed is a battery system wherein safety of a lithium secondary battery can be enhanced by efficiently deactivating (inactivating) lithium metal deposited on a negative electrode of the lithium secondary battery. Also disclosed is an automobile. Specifically disclosed is a battery system comprising a lithium ion secondary battery and a temperature control unit for controlling the temperature of the lithium ion secondary battery. The temperature control unit performs such a control that the temperature T of the lithium ion secondary battery is maintained within the following range: 55° C.<T<65° C., for a predetermined time.

Abstract: A buck mode power supply monitors the pulse load current for use as a scaled reference for comparison to a measured output current from each stage of the supply. A correction signal is generated for each stage by comparing the reference to the measured output currents. This result is compared to a second reference created from the system clock. A resulting second correction signal is used to alter the threshold reference voltage in a manner that provides proportional pulse width control to the supply output.

Abstract: The present invention relates to a switch driving circuit and a driving method thereof that are capable of preventing hard switching. The present invention includes: a dead time controller generating an high-side switching driver controlling signal and a low-side switching driver controlling signal controlling the switching operation of the high-side switch and the low-side switch according to a dead time controlling signal; and a phase detector detecting a phase of a resonance current flowing into the second power voltage terminal to generate a phase information signal, wherein one of the high-side switch driver controlling signal and a signal corresponding thereto, and the phase information signal are compared, and if the turn-on time of the high-side switch is later than the phase change of the resonance current, the dead time is controlled for the turn-on time of the high-side switch to advance the phase change of the resonance current.

Abstract: A voltage regulator may derive current from a bias circuitry having a constant-transconductance. The bias circuitry may generate the bias current using three NMOS devices. The temperature coefficient of the bias current may be within a specified, desired range. The bias current may be mirrored to low-power regulator circuitry to bias a diode-connected transistor in the low-power regulator circuitry to operate in the strong inversion region. A ratioed current based on the output load current may be injected into a bipolar junction transistor (BJT) device to cause the gate-source voltage (VGS) of the diode-connected device to track the VGS of the output transistor of the voltage regulator, to ensure tighter load regulation.

Abstract: A switching power source device disclosed in this specification includes a switching power source portion of nonlinear control method to generate an output voltage from an input voltage by performing an ON/OFF control of a switch element according to a comparison result between a feedback voltage and a reference voltage, wherein a ripple component is injected to either one of the feedback voltage and the reference voltage, and an offset control portion to adjust either one of the feedback voltage and the reference voltage for cancelling a DC offset of the output voltage caused by the ripple component.

Abstract: The invention relates to a voltage regulator having a differentiating circuit and an amplifier, the differentiating circuit being designed to detect a voltage at the voltage regulator connection and to provide it as a differentiated signal at its differentiating output, and the amplifier being designed to inject a compensation signal dependent on the differentiated signal into an input connection of an output circuit of the voltage regulator.

Abstract: A switching regulator circuit and a method for providing a regulated output voltage for a load is provided that includes a comparator, whose comparator output signal is routed to a first oscillator control input, whereby a first comparator input voltage is present at a first input of the comparator and a second comparator input voltage is present at a second comparator input of the comparator, an oscillator with the first oscillator control input, at which the comparator output signal of the comparator is present, and whereby an oscillator output signal can be provided at an output of the oscillator, and by means of the signal the switching processes at a switching element can be controlled, by which a coil current can be influenced by a coil connected to the switching element, and a first compensator for influencing the second comparator input voltage as a function of the input voltage, whereby this first compensator is connected to the second comparator input of the comparator.

Abstract: The present invention discloses a switching regulator eliminating beat oscillation, comprising: a first transistor, a second transistor, and an inductor connected to a common node, wherein the first and second transistors operate to convert an input voltage to an output voltage; a comparator comparing a voltage signal with a saw tooth wave to generate a control signal controlling at least one of the first and second transistors; a feedback loop obtaining a feedback signal from the output voltage and generating the voltage signal according to the feedback signal; and an inductorless filter circuit located in the feedback loop for filtering a predetermined frequency band.

Abstract: Disclosed is a digital voltage regulator system and method for mitigating voltage droop in an integrated circuit. If an unacceptable voltage droop is detected, the digital voltage regulator may take action to allow the power supply voltage to recover. A digital voltage regulator in accordance with embodiments discussed herein detects voltage droop by comparing a power supply voltage measurement with a threshold voltage. The threshold voltage may be calibrated based on power supply voltage measurements taken while the integrated circuit is operating.

Abstract: This invention offers a power supply circuit that is capable of improving a power factor as well as reducing a ripple current of an input/output of the power supply circuit due to switching of a switching device. The power supply circuit is provided with a first power supply circuit including first and second switching devices, a second power supply circuit including third and fourth switching devices and a switching control circuit. The switching control circuit controls the switching devices so that the first switching device and the third switching device are turned on and off at timings different from each other when an alternating current voltage from an alternating current power supply is positive, and the second switching device and the fourth switching device are turned on and off at timings different from each other when the alternating current voltage is negative.

Abstract: A power converter includes a zero-current detector having an adjustable offset voltage. The power converter includes a power converting unit and a switch driving circuit. The power converting unit generates a DC output voltage based on a pull-up driving signal, a pull-down driving signal and a DC input voltage. The switch driving circuit generates a first detection voltage signal based on the DC output voltage. The switch driving circuit includes a zero-current detector configured to adjust an offset voltage based on the first detection voltage signal and generate a zero-current detecting signal based on the offset voltage. The offset voltage and the zero-current detecting signal are associated with a current in the power converting unit.

Abstract: In one embodiment, the current source arrangement comprises a current source (B), that has two output terminals (102, 103) and a control input (101) to be supplied with a control voltage (Vgs) and is set up to provide a current (I) as a function of a voltage (Vds) at the output terminals (102, 103) and the control voltage (Vgs), an operating point adjustment unit (E) that is supplied with an actual value (Vi) proportional to an actual value of the current (I) and is set up to provide the control voltage (Vgs) as a function of the actual value (Vi) and a predetermined target value (Iz) of the current (I), and a comparison unit (A) coupled to the control input (101) of the current source (B) for providing a monitoring signal (100), wherein the monitoring signal (100) is provided as a function of a predetermined limit voltage (VG) and the control voltage (Vgs). A method for operating a current source arrangement is also specified.

Abstract: An overcurrent protection circuit includes: a determiner configured to determine whether or not the switch current exceeds a predetermined threshold, that is, the switch current is an overcurrent state when the switching element is turned ON; an OFF period setting counter configured to increase or decrease a counter output depending on a determination result of the determiner; and a drive signal generator configured to generate a drive signal of the switching element such that a length of an ON timing interval of the switching element corresponds to the counter output of the OFF period setting counter.

Abstract: An electronic circuit including a first electronic sub-circuit having an operating voltage that is higher than a supply voltage provided by a voltage source, and a second electronic sub-circuit that is coupled to the voltage source and to a first voltage input of the first electronic sub-circuit. The second electronic sub-circuit includes a short-time voltage boosting circuit that is adapted to provide a voltage at the first voltage input for a period long enough to enable a start-up of the first electronic sub-circuit when the short-time voltage boosting circuit is triggered and a controllable voltage boosting circuit that is adapted to provide a boosted voltage at the first voltage input.

Abstract: Provided is a voltage regulator capable of stable operation under a light load so as to cover a wide range of load capacitances. The voltage regulator includes a circuit for charging a phase compensation capacitor for the voltage regulator, and a zero due to a resistor (104) and a capacitor (106) appears at low frequency.

Abstract: A DC-DC converter receives input power from a power source and generates a regulated DC voltage as an output. The DC-DC converter contains multiple blocks, each of which is powered by a power supply received on a supply terminal. The DC-DC converter also contains a voltage regulator to generate a lower voltage from the power source. The lower voltage generated by the regulator is provided as the power supply on the supply terminal when the regulated DC voltage is less than a reference value, and the regulated DC voltage itself is provided as the power supply on the supply terminal otherwise. The regulator is switched off when the blocks are powered by the regulated DC voltage, thereby leading to increased efficiency of the DC-DC converter.

Abstract: The clock circuit of an integrated circuit operates with tolerance of variation in power. A compensation circuit is powered by a supply voltage. The compensation circuit generates a compensated voltage reference, which is compensated for variation in the supply voltage. The compensated voltage reference is compared by comparison circuitry against an output of timing circuitry, to determine timing of the clock signal.

Abstract: A semiconductor integrated circuit includes an internal reference voltage generation unit configured to generate an internal reference voltage; a high voltage generation unit configured to pump an external driving voltage based on the internal reference voltage applied from the internal reference voltage generation unit, and generate a high voltage having a specified level; and a reference voltage transfer unit configured to generate a test reference voltage from a reference voltage in a package test mode to correspond to a change in a driving operation of the external driving voltage applied from outside, and monitor and force the internal reference voltage.

Abstract: The remaining sheet quantity detection device of the present invention is provided with a storage unit for storing first information which associates a distance between a distance measuring sensor and a tray with a level value in a distance range less than a peak distance, and second information which associates the distance with the level value in a distance range exceeding the peak distance. Additionally provided is a distance acquisition unit for acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the first information when a detection unit detects that the distance is less than the peak distance, and acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the second information when the detection unit detects that the distance exceeds the peak distance.