Abstract: In one embodiment, a resonant converter circuit may be formed to include a light-load control circuit that forms a sequence to control one or more transistors wherein the sequence includes a drive interval having a drive pattern to drive the one or more transistors and a subsequent Off-interval wherein the one or more transistors are switched. A first circuit of the light-load control circuit may be configured to form the drive pattern as a repeated sequence of a pulse set that sequentially enables the one or more transistors with a base set followed by a number of non-switching intervals wherein each non-switching interval is a period of a signal formed in response to driving the one or more transistors with the base set.
Abstract: An embedded coil assembly embodiment includes a ferrite ring having an annular axis. The ferrite ring is positioned on a conductive metal surface. A plurality of separate, spaced apart conductive structures extend over the ferrite ring and are attached to the conductive metal surface in a first region of the conductive surface positioned radially outwardly of the annular axis of the ferrite ring and in a second region of the conductive surface positioned radially inwardly of the annular axis of the ferrite ring. An encapsulation layer covers, the ferrite ring and at least a portion of the plurality of conductive structures.
June 27, 2017
Date of Patent:
April 13, 2021
TEXAS INSTRUMENTS INCORPORATED
Haiying Li, Benjamin Michael Sutton, Ming Li
Abstract: A dial device includes a base, a cover, a column, a magnet, a magnetic sensor and a signal processing circuit. The cover includes a cap portion and a side wall vertically extending from the cap portion. The column surrounded by the wall includes a first end for connecting to the base and a second end for connecting to the cover. The magnet surrounds the column and is disposed on the base or the cover. The magnetic sensor is disposed on a side surface of the column and coupled to the signal processing circuit. When the cover rotates relative to the base, the magnet rotates around the magnetic sensor, and the magnetic field strengths sensed by the magnetic sensor vary. The signal processing circuit determines the relative rotation direction between the cover and the base according to the difference of the magnetic field strengths sensed by the magnetic sensor.
Abstract: A display device includes a display panel which displays an image in a normal mode or low power mode. A DC-DC converter supplies a source driving voltage to the data driver, and supplies a first power voltage to the power line of the display panel in the normal mode. The data driver supplies a first auxiliary power voltage to the power line of the display panel in the low power mode. The DC-DC converter gradually changes the voltage level of the first power voltage to a reference output voltage level over a first period when the display panel initially enters into the normal mode, and changes the voltage level of the first power voltage to the reference output voltage level over a second period shorter than the first period when the mode of the display panel is switched from the low power mode to the normal mode.
Abstract: A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter.
Abstract: A replaceable key structure includes a key holder and a circuit board. The key holder is disposed above a circuit board. The key holder is formed with a mounting slot for selectively receiving a first key module or a second key module therein. A magnetic sensor and a contact connector are disposed on the circuit board positionally corresponding to the mounting slot of the key holder. The first key module has a shaft, and a magnetic element disposed on the bottom of the shaft. The magnetic sensor can output an analog signal when the magnetic element approaches. The second key module has a trigger switch which has two electrical terminals disposed on the bottom surface of the second key module. When the second key module is installed in the mounting slot, the electrical terminals can be electrically connected to the contact connector.
Abstract: A superconducting magnetic energy storage system (SMES). The SMES includes a toroidally wound super conducting magnet having a toroidal magnetic core with a charging winding and a discharging winding. The charging winding and discharging winding are wound on the toroidal magnetic core. The SMES also includes a DC power source, the DC power source operable to provide DC current to the charging winding of the toroidally wound superconducting magnet, and a modulator operably connected to the DC power source and the charging winding, the modulator operable to modulate at least a portion of the DC current applied to the charging winding of the superconducting magnet. The energy is stored in a magnetic field of the superconducting magnet by applying a current to the charging winding of the superconducting magnet, and energy is withdrawn from the magnetic field by a current flowing in the discharging winding.
Abstract: A movable iron core, a primary attracting and holding coil, a resistor electrically connected to an upstream start-up electric contact, and an auxiliary attracting and holding coil electrically connected to the upstream start-up electric contact are included. The movable iron core displaces a pinion from a separated position to a contact position. After the pinion is displaced from the separated position to the contact position, the upstream start-up electric contact is electrically disconnected from another start-up electric contact to cut off a current to the motor, and the movable iron core displaces the pinion from the contact position to an engaged position with the magnetomotive force of the primary attracting and holding coil and a magnetomotive force of the auxiliary attracting and holding coil. After the pinion is displaced from the contact position to the engaged position, main electric contacts are electrically connected to resume electric connection to the motor.
October 5, 2016
Date of Patent:
March 23, 2021
Mitsubishi Electric Corporation
Takuma Ono, Yoshihiro Morimoto, Tasuku Ito
Abstract: The disclosure relates to a flyback converter, a control circuit and a control method therefor. In the control method, a power stage circuit is controlled at a light load to operate alternatively in a pulse-width modulation mode (e.g., a constant switching frequency mode) and in a constant on time mode, in accordance with a voltage compensation signal. Thus, output energy may decrease rapidly and smoothly, without need for the control circuit to stop working. The flyback converter has increased efficiency at the light load and decreased output voltage ripple.
Abstract: A rotary electric rotor includes a rotor core having a shaft through-hole; a rotor shaft having a male screw portion on its first side; a washer having an annular structure with cutouts elastically deformable in a radial direction, having a washer tapered surface, and having an annular projection portion that extends in an axial direction from an end surface and is fixed to the rotor core in a state of being disposed in a gap between an inner circumferential surface of the shaft through-hole and an outer circumferential surface of the rotor shaft and pressing the inner circumferential surface of the shaft through-hole, the end surface and the washer tapered surface are opposite surfaces of the washer; and a nut having a female screw portion that meshes with the male screw portion and having a nut tapered surface that faces the washer tapered surface.
Abstract: An induction-powered device for use in an alternating magnetic field comprises: a magnetically permeable core; an electrically conductive coil surrounding the core; and an electrical load electrically connected to the coil. The coil is configured to generate a voltage when exposed to the alternating magnetic field, to power the electrical load.
Abstract: According to one or more embodiments, when a predetermined time has passed after generation of an arc at least either between a movable contact and a fixed contact or between a movable contact and a fixed contact, an arc generated between the movable contact and the fixed contact is extended by a magnetic field generation unit to be longer than an arc generated between the movable contact and the fixed contact.
Abstract: A power control circuit for use with devices that will be placed in a flammable sterilizing gas includes a bi-stable switch that is configured to produce an output to place the circuitry of a connected device in a run state or a sleep state. The bi-stable switch controls one or more transistors to drain energy from energy storage devices in the circuitry of the connected device to a level below an ignition level of a sterilizing gas. A remotely actuatable switch can be actuated from outside of a packaging in which the power control circuit is placed to cause the bi-stable switch to produce an output that puts the circuitry in the run state without removing the power control circuit from the packaging.
Abstract: A latching device for an operating mechanism for an electrical switching apparatus. The device has a locking member movable between a first position and a second position. In the first position the locking member is arranged to lock a drive member of the operating mechanism in a locked position, and a force of the drive member being applied to a contact portion of the locking member. In the second position the locking member is arranged to release the drive member from the locked position. At least in the first position the locking member is arranged to bear against the counter roller. A tripping member is movable between a first position locking the locking member and a second position releasing the locking member. The locking member has a first portion and a second portion. The first portion is rotatable connected to a first link around a first pivot axis, which first pivot axis is movable perpendicular to its direction.
Abstract: A motor according to the present disclosure is a motor including a motor body part and a driving circuit part, the motor body part including: a rotor; a stator including a wound coil; a winding terminal electrically connected to the coil and extending toward the driving circuit part; and a frame housing the rotor and the stator, wherein the driving circuit part includes: a case including a first attaching portion and a frame portion with openings on both end sides of the frame portion; a first wiring board including a driving circuit and a power device mounted on the first wiring board, the first wiring board being fixed to the first attaching portion; and a first electric wiring member including a first stress absorbing portion formed into a shape absorbing stress, the first electric wiring member electrically connecting the winding terminal and the first wiring board.
Abstract: A solenoid actuator with firing pin position detection is provided. The solenoid actuator includes a solenoid assembly having movable armature. The solenoid assembly is mounted to a firing pin housing which houses a firing pin. The firing pin is arranged such that the movable armature acts upon the firing pin to transition it from an unfired position to a fired position. The solenoid actuator also includes a firing pin position switch is mounted within a bore that is transverse to a bore of the firing pin housing containing the firing pin. The firing pin includes cam surface that acts upon the firing pin position switch to ultimately provide an indication of whether the firing pin is in the fired or the unfired position.
August 8, 2018
Date of Patent:
March 2, 2021
TLX Technologies, LLC.
Patrick Thomas Schwobe, Brett G. Berger
Abstract: There is provided a power supply that includes a primary block having an inverter circuit and a secondary block connected to the primary block, the secondary block having a transformer with a primary side connected to the inverter circuit and having a rectifier that is connected to a secondary side of the transformer and outputs DC power.
Abstract: An inductor includes a substrate as a base material, a core portion, a coil portion, an insulating portion formed between conductors of the coil portion, and a terminal portion connecting the core portion and the coil portion to the outside. A main direction of a magnetic field that is generated in accordance with current flowing through the coil portion extends in a planar direction of the substrate. In at least a portion of the coil portion, both width and thickness of a rectangular cross-sectional area of the coil portion are larger than the width of the insulating portion.