Abstract: A nucleic acid detection host includes a host body, a detection kit installation area, a sample heating area, a sampling groove, a heating structure, and an image collection unit. The detection kit installation area is configured to detachably install a nucleic acid detection kit. The sampling groove is disposed on the detection kit installation area and is connected to the detection kit installation area. The heating structure is configured to heat the nucleic acid detection kit to perform a PCR amplification reaction and an electrophoretic detection. The image collection unit is configured to collect an image of the nucleic acid detection kit. A nucleic acid detection device including the nucleic acid detection host is also disclosed. The nucleic acid detection device has a simple structure, which is portable, flexible, and convenient, and can be used at home.

Abstract: A camera module in an electronic device which is retracted in the body of the device until deployed includes a drive assembly, a camera assembly, and a first connecting rod. The drive assembly includes a driver and a first member. The first connecting block connects to the driver, the driver can drive the first connecting block toward or away from the driver. The camera assembly comprises a camera bracket and a second connecting block connected to the camera bracket. The first connecting rod connects to the first and second connecting blocks, the first connecting block can drive the first connecting rod to move in a circular motion during the linear movement of the first connecting block, causing the camera bracket to be received in the body or deployed out.

Abstract: A circuit assembly for a power converter includes a substrate, power stage integrated circuit (IC) dies, and output inductors that connect switch nodes of the power stage IC dies to an output node of the power converter. The power stage IC dies are mounted on one side of the substrate and the output inductors are mounted on an opposing side of the substrate. Two output inductors go through a magnetic core. A heatsink is attached to surfaces of the power stage IC dies. A power stage IC die has a pair of switching transistors, and a switch node formed by the switching transistors is connected by an output inductor to the output node of the power converter.

Abstract: A camera module in an electronic device which is retracted in the body of the device until deployed includes a drive assembly, a camera assembly, and a first connecting rod. The drive assembly includes a driver and a first member. The first connecting block connects to the driver, the driver can drive the first connecting block toward or away from the driver. The camera assembly comprises a camera bracket and a second connecting block connected to the camera bracket. The first connecting rod connects to the first and second connecting blocks, the first connecting block can drive the first connecting rod to move in a circular motion during the linear movement of the first connecting block, causing the camera bracket to be received in the body or deployed out.

Abstract: A circuit assembly for a power converter includes a substrate, power stage integrated circuit (IC) dies, and output inductors that connect switch nodes of the power stage IC dies to an output node of the power converter. The power stage IC dies are mounted on one side of the substrate and the output inductors are mounted on an opposing side of the substrate. Two output inductors go through a magnetic core. A heatsink is attached to surfaces of the power stage IC dies. A power stage IC die has a pair of switching transistors, and a switch node formed by the switching transistors is connected by an output inductor to the output node of the power converter.

Abstract: A circuit assembly for a power converter includes power stage blocks and heat-dissipating substrate. A power stage block includes a power stage IC die, an output inductor that is connected to a switch node of the power stage IC die, and capacitors that form an output capacitor of the power stage block. The output capacitors of the power stage blocks are symmetrically arranged. The output inductors can be placed on the same side of the substrate as the power stage IC dies, or on a side of the substrate that is opposite to the side where the power stage IC dies are disposed. A power stage block may generate two output phases of the power converter.

Abstract: A button installed on a housing of an electronic device includes a keycap, a button frame, a waterproofing ring, and at least one installation post. The button frame is latched with the keycap and defines at least one through hole. The waterproofing ring is disposed within the at least one through hole. At least one installation post is received through the waterproofing ring and resists against the keycap.

Abstract: An electronic device includes a first housing portion, a second housing portion, a circuit board, a battery, a display screen, and a heat-dissipating structure. The second housing portion is coupled together with the first housing portion. The circuit board and the battery are received within the second housing portion. The heat-dissipating structure is arranged between the circuit board and the display screen. The heat-dissipating structure includes a substrate including a first surface and a second surface opposite to the first surface and defines an opening passing through the first surface and the second surface. The heat dissipating element is located in the opening.

Abstract: A circuit assembly for a power converter includes power stage blocks and heat-dissipating substrate. A power stage block includes a power stage IC die, an output inductor that is connected to a switch node of the power stage IC die, and capacitors that form an output capacitor of the power stage block. The output capacitors of the power stage blocks are symmetrically arranged. The output inductors can be placed on the same side of the substrate as the power stage IC dies, or on a side of the substrate that is opposite to the side where the power stage IC dies are disposed. A power stage block may generate two output phases of the power converter.

Abstract: A circuit assembly for a power converter includes power stage blocks. A power stage block includes a power stage IC die, an output inductor that is connected to a switch node of the power stage IC die, and capacitors that form an output capacitor of the power stage block. The output capacitors of the power stage blocks are symmetrically arranged. The output inductors can be placed on the same side of the substrate as the power stage IC dies, or on a side of the substrate that is opposite to the side where the power stage IC dies are disposed. A power stage block may generate two output phases of the power converter.

Abstract: A circuit assembly for a power converter includes power stage blocks. A power stage block includes a power stage IC die, an output inductor that is connected to a switch node of the power stage IC die, and capacitors that form an output capacitor of the power stage block. The output capacitors of the power stage blocks are symmetrically arranged. The output inductors can be placed on the same side of the substrate as the power stage IC dies, or on a side of the substrate that is opposite to the side where the power stage IC dies are disposed. A power stage block may generate two output phases of the power converter.

Abstract: A button installed on a housing of an electronic device includes a keycap, a button frame, a waterproofing ring, and at least one installation post. The button frame is latched with the keycap and defines at least one through hole. The waterproofing ring is disposed within the at least one through hole. At least one installation post is received through the waterproofing ring and resists against the keycap.

Abstract: An electronic device includes a first housing portion, a second housing portion, a circuit board, a battery, a display screen, and a heat-dissipating structure. The second housing portion is coupled together with the first housing portion. The circuit board and the battery are received within the second housing portion. The heat-dissipating structure is arranged between the circuit board and the display screen. The heat-dissipating structure includes a substrate including a first surface and a second surface opposite to the first surface and defines an opening passing through the first surface and the second surface. The heat dissipating element is located in the opening.

Abstract: A control method used in a constant on-time switching converter includes: judging whether the switching converter enters into an ultrasonic mode; turning ON the low-side switch to discharge the output capacitor when the switching converter enters into the ultrasonic mode; generating an additional slope compensation signal during the discharge of the output capacitor; comparing a feedback signal indicative of the output voltage of the switching circuit with the sum of a reference voltage and the additional slope compensation signal; turning OFF the low-side switch and turning ON the high-side switch when the feedback signal decreases to reach the sum of the reference voltage and the additional slope compensation signal.

Abstract: A wrist-worn bracelet displaying health indicators constructed to ensure correct and optimal fitting on a wrist of user for the effective detection of functioning of human body. The wrist-worn bracelet includes a first wristband portion and a second wristband portion connected to the first wristband portion to form a closed loop. The second wristband portion includes at least one inwardly-bent portion. A contour of the at least one inwardly-bent portion is capable of being changed by heating and bending the inwardly-bent portion so that an inner diameter of the closed loop is adjustable.

Abstract: A bracelet includes a first wristband portion having a first connecting end and a first lock end opposite to the first connecting end, a second wristband portion having a second connecting end and a second lock end opposite to the second connecting end, and a lock mechanism. The seconded connecting end is rotatably connected to the first connecting end. The first lock end is connected to the second lock end, thereby locking the first wristband portion and the second wristband portion together to surrounding a receiving space for receiving a user's wrist.

Abstract: The present provides a back plate including a plate and a side wall. The side wall extends out from an edge of the plate, wherein the side wall includes a wall body, a first bending sheet, and a second bending sheet. The first bending sheet is formed by bending outward from a top end of the wall body along a first rotating direction. The second bending sheet is formed by bending an end of the first bending sheet that is away from the top end of the wall body inward along a second rotating direction contrary to the first rotating direction, wherein at least a portion of the second bending sheet overlaps the first bending sheet. The second bending sheet includes a fixing part disposed on a face of the second bending sheet that faces away from the first bending sheet.

Abstract: A control method used in a constant on-time switching converter includes: judging whether the switching converter enters into an ultrasonic mode; turning ON the low-side switch to discharge the output capacitor when the switching converter enters into the ultrasonic mode; generating an additional slope compensation signal during the discharge of the output capacitor; comparing a feedback signal indicative of the output voltage of the switching circuit with the sum of a reference voltage and the additional slope compensation signal; turning OFF the low-side switch and turning ON the high-side switch when the feedback signal decreases to reach the sum of the reference voltage and the additional slope compensation signal.

Abstract: The present provides a back plate including a plate and a side wall. The side wall extends out from an edge of the plate, wherein the side wall includes a wall body, a first bending sheet, and a second bending sheet. The first bending sheet is formed by bending outward from a top end of the wall body along a first rotating direction. The second bending sheet is formed by bending an end of the first bending sheet that is away from the top end of the wall body inward along a second rotating direction contrary to the first rotating direction, wherein at least a portion of the second bending sheet overlaps the first bending sheet. The second bending sheet includes a fixing part disposed on a face of the second bending sheet that faces away from the first bending sheet.

Abstract: A wrist-worn bracelet displaying health indicators constructed to ensure correct and optimal fitting on a wrist of user for the effective detection of functioning of human body. The wrist-worn bracelet includes a first wristband portion and a second wristband portion connected to the first wristband portion to form a closed loop. The second wristband portion includes at least one inwardly-bent portion. A contour of the at least one inwardly-bent portion is capable of being changed by heating and bending the inwardly-bent portion so that an inner diameter of the closed loop is adjustable.