Abstract: A power conversion device according to one or more embodiments may include: a microcomputer; and an output circuit controlled by the microcomputer, including an output unit that converts an input power into a predetermined power and outputs the predetermined power, an internal power source that supplies a power source to the microcomputer, a driver that drives the output unit by a signal from the microcomputer, and a microcomputer stop transition unit that, when an operation of the power conversion device is stopped, outputs a microcomputer stop signal to the microcomputer and causes an operation of the microcomputer to transition to a stop state. In one or more embodiments, after the microcomputer stop transition unit causes the operation of the microcomputer to transition to a stop state, the microcomputer or the output circuit may stop an output of the internal power source.

Abstract: A DC motor includes: a brush configured to be connectable with the commutator; a first terminal attached to the brush; a second terminal disposed at a position away from the first terminal, the second terminal being configured to be connectable with an external terminal; a bracket to which the first terminal and the second terminal are attached; and a positive temperature coefficient (PTC) thermistor disposed between the first terminal and the second terminal, the PTC thermistor including a first electrode bonded to the first terminal and a second electrode bonded to the second terminal, wherein the PTC thermistor is a surface-mount type thermistor in which the first electrode and the second electrode are exposed on one surface side and wherein, on the one surface side of the PTC thermistor, the first electrode faces the first terminal and the second electrode faces the second terminal.

Abstract: A driving circuit including a detection circuit, a first control circuit, a second control circuit, and a driving transistor is provided. The detection circuit is coupled between a first power terminal and a second power terminal and generates a detection signal according to the voltages of the first and second power terminals. The first control circuit generates a first control signal according to the detection signal. The second control circuit generates a second control signal according to the detection signal. The driving transistor is coupled between an input-output pad and the second power terminal. When the detection signal is at a first level, the driving transistor is turned on according to the first control signal. When the detection signal is at a second level, the driving transistor is configured to operate according to the second control signal. The first level is different from the second level.

Abstract: A dc-dc power converter is for use in data communications and for connection between a front end ac-dc power supply and a point-of-load circuit. The dc-dc power converter includes either an unregulated flyback converter or an unregulated buck converter. Each flyback and buck converter has an input for connection to an output of the front end ac-dc power supply and an output for connection to an input of the point-of-load circuit. A switch controller has an input connected to either the flyback converter input or the buck converter. The switch controller has an output connected to either a switch of the flyback converter or a switch of the buck converter.

Abstract: An armature includes a multi-phase armature coil and an armature core. The armature core includes a back yoke, a plurality of large-width teeth and a plurality of small-width teeth having a smaller circumferential width than the large-width teeth. The large-width teeth each radially protrude from the back yoke and are spaced from one another in a circumferential direction of the armature core. The large-width teeth have the armature coil concentratedly wound thereon. The small-width teeth each radially protrude from the back yoke and are spaced from one another in the circumferential direction of the armature core. The small-width teeth are arranged alternately with the large-width teeth in the circumferential direction of the armature core. Moreover, 1?W1/W2?2, where W1 is a radial width of the back yoke and W2 is the circumferential width of the small-width teeth.

Abstract: The present invention provides a secondary side of a linear motor, which mainly includes a base, a combining mechanism and multiple magnetic members, wherein the base has multiple plates that are sequentially stacked into a block; the combining mechanism is configured to combine the plate-shaped bodies; and the magnetic members are disposed on the base in a separated manner.

Abstract: A linear regulator for applications with low area constraint resulting in limited load decoupling capacitance that introduces a compensating zero in the regulator loop to counteract the loss of phase margin and further introduces a feed-forward noise cancellation path operating over a wide frequency range covering a first package resonance frequency. The feed-forward path has low power consumption and improves the power-supply rejection ratio.

Abstract: An apparatus may include a power converter having a power supply input for receiving an input power supply voltage generated by a power supply, an output for generating an output voltage to a load, and a power inductor coupled between the power supply input and the output may and further include an energy storage element coupled to the power supply input, the power inductor, and the output such that operation of the power inductor is split temporally between delivering energy to the energy storage element and delivering energy to the load, and operation of the energy storage element is split temporally between delivering energy to the load and receiving energy from one or both of the power supply and the load.

Abstract: An electrical insulating system and an associated insulated stator bar are provided. The electrical insulating system includes an electrically insulating mica paper and a fiber glass disposed on a first surface of the electrically insulating mica paper. The electrically insulating mica paper and the fiber glass are impregnated with a curable binder resin composition. The curable binder resin composition includes about 21 weight percent to about 73 weight percent of a solid or semi-solid epoxy resin having an epoxide functionality of about 2.5, about 0.8 weight percent to about 49 weight percent of a liquid epoxy resin having an epoxide functionality of about 2, about 4 weight percent to about 15 weight percent of a bisphenol A-formaldehyde novolac, a metal acetylacetonate catalyst, and about 2.5 weight percent to about 15 weight percent of a toughener selected from the group consisting of polyethersulfone, methylmethacrylate butadiene styrene, and a combination thereof.

Abstract: This invention is concerning a linear motor, in which a movable body includes an electricity storage device, a circuit section constituted by an inverter and a control circuit and converting and outputting power supplied from the electricity storage device, and a plurality of armatures, the magnetic fields of which vary in accordance with the power output from the circuit section, and which are arranged so as to be separated from a stator core via a gap. Further, when only the mounted body, the electricity storage device, the circuit section, and the armatures are viewed, the electricity storage device is arranged adjacent to the mounted body.

Abstract: There is provided an electric machine that includes a rotor comprising a pole and magnet assemblies divided axially in a first subsection and a second subsection. Each of the first and second subsections includes poles and magnets, and the poles and magnets of the first subsection are offset from the poles and magnets of the second subsection.

Abstract: An electric machine is provided which includes a rotor disk extending along a radial direction and a having a rotor magnet embedded within the rotor disk. The electric machine further includes a stator assembly in axial or radial magnetic flux communication with the rotor magnets to generate a torque.

Abstract: An electric machine is provided which includes a rotor disk extending along a radial direction and having a rotor flange attached to or formed integrally with the rotor disk and extending substantially along the axial direction. A plurality of rotor magnets are mounted on the rotor disk and supported by the rotor flange such that the rotor flange absorbs centrifugal loads exerted on the magnets and enables high speeds of operation.

Abstract: The method, apparatus and system of a single-stage current-fed clamped series resonant power factor corrected (PFC) converter CF-CSRC provides power conversion and current regulation. The CF-CSRC system may be implemented in a single-stage isolated topology for high efficiency unity power factor correction (PFC) converter applications. Moreover, the CF-CSRC system combines the intrinsic advantages of the classical clamped series resonant converter while mitigating drawbacks by using an integrated boost input current shaper.

Abstract: A unit coil includes: first, second, third, and fourth turn portions extending in a bent manner from first, second, third, and fourth slot accommodation portions and each connecting the slot accommodation portions to each other; and first, second, third, and fourth leg portions. Recesses are formed in surfaces opposed to each other at bent parts of the turn portions or bent parts of the turn portion and the leg portion, that extend in a bent manner toward the same side in the circumferential direction from the slot accommodation portions adjacent to each other in the radial direction.

Abstract: A power supply system and method include multiple power conversion units (PCUs) with independent power generation control and a PCU-to-PCU regulation of power, handoff control system to transfer control of power regulation to a load among the PCUs. The multiple PCUs maintain independent power generation control to collectively provide power to the load and handoff regulation of the power to the load from one PCU to another PCU. The term “handoff” refers to communication between PCUs that affects a transfer and acceptance of regulation of power control. The independent PCU power generation control with singularly located but transferable control of the regulation of power provides a flexible dynamic power supply.

Abstract: A hysteretic current mode buck-boost voltage regulator including a buck-boost voltage converter, a switching controller, a window circuit, a ramp circuit, and a timing circuit. The timing circuit may be additional ramp circuits. The voltage converter is toggled between first and second switching states during a boost mode, is toggled between third and fourth switching states during a buck mode, and is sequentially cycled through each switching state during a buck-boost mode. The ramp circuit develops a ramp voltage that simulates current through the voltage converter, and switching is determined using the ramp voltage compared with window voltages provided by the window circuit. The window voltages establish frequency, and may be adjusted based on the input and output voltages. The timing circuit provides timing indications during the buck-boost mode to ensure that the second and fourth switching states have approximately the same duration to provide symmetry of the ramp signal.

Abstract: A buck converter includes a power switch having a first end to receive an input voltage, and a soft start circuit configured to compensate a soft start voltage during a soft start time period according to a result of comparing a feedback voltage corresponding to an output voltage of the buck converter and an input detection voltage corresponding to the input voltage. The buck converter controls switching of the power switch using the soft start voltage.

Abstract: A DC/DC converter is described that can output power during both an on-period and an off-period of a switching element. The DC/DC converter may have a transformer and a switching element that may be turned on and off to connect or cut off the primary coil of the transformer. A first rectification device connected between the secondary coil of the transformer and an output terminal makes a first current on a path from the input terminal to the output terminal via the secondary coil to flow during an on-period, and cuts off the first current during an off-period. A second rectification device connected between the primary coil and the output terminal cuts off a second current on a path from the input terminal to the output terminal via the primary coil during the on-period, and makes the second current to flow during the off-period.

Abstract: An isolated synchronous rectifying DC/DC converter includes a drain terminal connected to a drain of a synchronous rectification transistor, a source terminal connected to a source of the synchronous rectification transistor; a comparator configured to compare a drain voltage of the drain terminal with a predetermined threshold voltage which set is based on a potential of the source terminal, a first flip-flop to which an OFF signal output from the comparator is input, a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the first flip-flop, and a first abnormality detection circuit including an abnormality detection comparator configured to compare a voltage of the source terminal with a detection threshold voltage, and configured to output a first abnormality detection signal based on an output of the abnormality detection comparator.