Delta Electronics

A power supply includes an AC-DC converter, a feedback circuit, an under voltage protection circuit, a control signal generating circuit, a voltage abnormal protection circuit and an auxiliary under voltage detection circuit. The AC-DC converter converts an AC voltage to a DC voltage. The feedback circuit generates a feedback signal according to the DC voltage. The control signal generating circuit sets the AC-DC converter to convert the AC voltage to the DC voltage. When the auxiliary under voltage detection circuit detects that a duration of the AC voltage being less than a predetermined voltage is longer than a predetermined period, the auxiliary under voltage detection circuit changes a signal value of the feedback signal, to enable the control signal generating circuit by the voltage abnormal detection circuit to set the AC-DC converter to perform a soft start procedure.

A silicon steel sheet stacking structure includes a main silicon steel lamination, a blocking silicon steel sheet, and a riveting blocking portion. The main silicon steel lamination includes silicon steel sheets stacking in a first direction. Each of the silicon steel sheets has at least one through hole. The blocking silicon steel sheet is disposed on the main silicon steel lamination. The blocking silicon steel sheet has at least one through hole. The riveting blocking portion is extended from the blocking silicon steel sheet and is raised above a surface of the blocking silicon steel sheet. The riveting blocking portion is configured to be compressed and generate a deformation, such that the riveting blocking portion pushes at least one magnet located in the at least one accommodating space to abut the at least one magnet against an inner surface of the at least one through hole.

An integrated magnetic component and a manufacturing method thereof for a multi-module DC-DC converter (1) are provided. The integrated magnetic component includes N primary windings (Wp1, Wp2), N secondary windings (Wsl, Ws2) and N magnetic cores (21, 22), and N is an integer greater than one. The N magnetic cores (21, 22) are arranged sequentially, and each magnetic core includes a plate (20), first and second common core legs (CCL), an inductor core leg (PICL, SICL) and a transformer core leg (TCL). The first common core leg and the second common core leg are disposed at a first side (201) and a second side (202) of the plate (20) respectively. The inductor core leg (PICL, SICL) is configured to be wound with a corresponding primary or secondary winding, and the transformer core leg (TCL) is configured to be wound with the corresponding primary and secondary windings interleaved with each other.

An axial flux motor stator structure (100) includes an outer ring-shaped bracket (110), an inner ring-shaped bracket (120), a stator core (130), an upper winding assembly, a lower winding assembly, an upper thin plate (160) and a lower thin plate (170). The stator core is between the inner ring-shaped bracket and the outer ring-shaped bracket and has plural upper and lower stator slots. The upper winding assembly (140) and the lower winding assembly (150) pass through the upper and lower stator slots respectively. Each of the upper thin plate and the lower thin plate includes an outer axial structure, an inner axial structure and a radial structure. The radial structure is between the upper and the lower winding assemblies.

A detection method for a drive (1) is provided. Firstly, a step (S1) is performed to determine whether an operating parameter of the drive (1) is normal. If the determining condition of the step (S1) is satisfied, a step (S2) is performed to determine whether a value of the abnormal flag is 1. If the determining condition of the step (S2) is satisfied, the soft-start circuit is disabled. If the determining condition of the step (S1) or the step (S2) is not satisfied, the soft-start circuit (3) is enabled to turn on the switch (8) and then the capacitor (C) is pre-charged in a predetermined period. If a pre-charged voltage of the capacitor (C) is greater than a voltage threshold, the drive (1) enters a standby mode. If the pre-charged voltage of the capacitor (C) is not greater than the voltage threshold, the switch (8) is turned off.

A DC-DC power supply (1, 1a) and control method thereof are provided. The DC-DC power supply (1, 1a) includes a transformer (2, 2a, 2b, 2c, 2d, 2e, 2f), a primary circuit (3), a secondary circuit (4) and a controller (5, 74). The transformer (2, 2a, 2b, 2c, 2d, 2e, 2f) includes a primary winding (21, 21a, 21b, 21c, 21d, 21e, 21f) and a secondary winding (22, 22a, 22b, 22c, 22d, 22e, 22f). The primary circuit (3) is connected with the primary winding (21, 21a, 21b, 21c, 21d, 21e, 21f) and includes a plurality of first primary switches (Q1, Q2, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q1c, Q2c, Q1d, Q2d, Q1e, Q2e), and a plurality of second primary switches (Q3, Q4, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q3d, Q4d, Q3e, Q4e). The secondary circuit (4) is connected with the secondary winding (22, 22a, 22b, 22c, 22d, 22e, 22f). The controller (5, 74) is configured to alternately control the operation of the first primary switches (Q1, Q2, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q1c, Q2c, Q1d, Q2d, Q1e, Q2e) and the second primary switches (Q3, Q4, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q3d, Q4d, Q3e, Q4e) for periodically adjusting a turn-off loss difference therebetween.

The present disclosure relates to the technical field of electronic power, and in particular to a server, which includes a data processing apparatus and a first heatsink, the data processing apparatus includes a load group and a power supply module group, the load group includes at least two loads, and the power supply module group supplies power to the loads; the first heatsink is thermally connected to the power supply module group, at least part of a projection of the first heatsink in a first plane is located outside a load region, the first plane is parallel to an upper surface of the load, the load region is a minimum outer contour projection region of the load group that can cover all loads in the first plane.

A power supply includes a power converter, a feedback circuit, a control signal generating circuit and a compensating circuit. The power converter generates an output voltage at an output node. The feedback circuit generates a feedback signal according to an output node voltage. The control signal generating circuit provides a control signal to the power converter according to the feedback signal. The compensating circuit includes a reference voltage circuit, a voltage dividing circuit and a switching circuit. When the output node voltage is decreased from the first voltage level to a level threshold or decreased from the first voltage level by an amplitude threshold, the switching circuit is conducted to couple the feedback circuit to the voltage dividing circuit, so the feedback circuit sets the control signal generating circuit to increase a duty cycle of the control signal and/or decrease a frequency of the control signal.

A double-layer antenna (11), used for an optical phased array chip (1), the double-layer antenna (11) including: a substrate (110); a bottom protective layer (113B), disposed above the substrate (110); a light guide layer (111), disposed above the bottom protective layer (113B); a grating layer (112), disposed above the light guide layer (111), and including a plurality of grating bodies (1121); the grating bodies (1121) arranged periodically with a spacing (2G) along a first axis (SA1) of the light guide layer (111); each of the grating bodies (1121) disposed along a second axis (SA2) of the light guide layer (111); and a top protective layer (113T), disposed above the light guide layer (111) and the grating bodies (1121). A refractive index of the grating layer (112) and a refractive index of the light guide layer (111) are different.

An optical phased array chip (1) includes: a light-emitting unit (11), configured to generate an optical emission signal (LT); a beam-splitting unit (12), connected to the light-emitting unit (11), and configured to transmit the optical emission signal (LT) to an optical antenna unit (13) and receive and transmit a diffusely reflected optical return signal (RLT) to a photodetector unit (14); the optical antenna unit (13), connected to the beam-splitting unit (12), configured to transmit the optical emission signal (LT), and configured to receive and transmit the diffusely reflected optical return signal (RLT) to the beam-splitting unit (12); the photodetector unit (14), connected to the beam-splitting unit (12), and configured to receive and transmit the diffusely reflected optical return signal (RLT) to a signal processing unit (15); and the signal processing unit (15), connected to the photodetector unit (14), and configured to receive the diffusely reflected optical return signal (RLT) in an electric current signal manner converted by the photodetector unit (14) and generate a sensing information.