Abstract: An automatic material changing and welding system for stamping materials includes a welding transfer sliding table and a welding platform. The automatic material changing device further includes a feeding system. The feeding system includes a double-head uncoiling machine, an automatic feeding machine and a flattening machine. The automatic material changing device is used for automatic feeding for a stamping machine. The system triggers a material changing signal through a sensor to control and integrate the welding transfer sliding table and the welding platform to act to execute a welding procedure, so that the stamping materials are in welding connection with new and old coiled materials through a welding connection plate to realize continuous production operation of an automated stamping production line.

Abstract: A blood pressure detection device manufactured by a semiconductor process includes a substrate, a microelectromechanical element, a gas-pressure-sensing element, a driving-chip element, an encapsulation layer and a valve layer. The substrate includes inlet apertures. The microelectromechanical element and the gas-pressure-sensing element are stacked and integrally formed on the substrate. The encapsulation layer is encapsulated and positioned on the substrate. A flowing-channel space is formed above the microelectromechanical element and the gas-pressure-sensing element. The encapsulation layer includes an outlet aperture in communication with an airbag. The driving-chip element controls the microelectromechanical element, the gas-pressure-sensing element and valve units to transport gas.

Abstract: The disclosure provides a power management method. The power management method is applicable to an electronic device. The electronic device is electrically coupled to an adapter, and includes a system and a battery. The adapter has a feed power. The battery has a discharge power. The power management method of the disclosure includes: reading a power value of the battery; determining a state of the system; and discharging power to the system, when the system is in a power-on state and the power value is greater than a charging stopping value, by using the battery, and controlling, according to the discharge power and the feed power, the adapter to selectively supply power to the system. The disclosure further provides an electronic device using the power management method.

Abstract: A lamp assembly of LED string light has a lamp module, an inner housing, an outer housing, a lower shell and a lamp cover module. The lamp module has a circuit board and an LED bulb and a set of power lines mounted on the circuit board. The inner housing has two symmetrical and engaged inner cases and a space to receive the lamp module. The outer housing has two symmetrical outer cases assembled together and encloses the inner housing. The lower shell is sleeved around a bottom portion of the inner housing. The lower shell has a multi-step portion formed on a periphery thereof for the lamp cover module to sleeve on the lower shell. Given the aforementioned elements, the lamp assembly of LED string light is easily assembled and highly waterproof and dustproof.

Abstract: A lamp assembly of LED string light has a lamp module, an inner housing, an outer housing, a lower shell and a lamp cover module. The lamp module has a circuit board and an LED bulb and a set of power lines mounted on the circuit board. The inner housing has two symmetrical and engaged inner cases and a space to receive the lamp module. The outer housing has two symmetrical outer cases assembled together and encloses the inner housing. The lower shell is sleeved around a bottom portion of the inner housing. The lower shell has a multi-step portion formed on a periphery thereof for the lamp cover module to sleeve on the lower shell. Given the aforementioned elements, the lamp assembly of LED string light is easily assembled and highly waterproof and dustproof.

Abstract: A slide projector has a case, a lens, a light source, a slide bracket and dynamic effect device. The lens is mounted on a front surface of the case. The light source is mounted on the opposite side to the lens in the case. The slide bracket is mounted between the lens and the light source. The dynamic effect device has a first motor and a first ripple glass. The first ripple glass is mounted between the light source and the slide bracket, and can be driven to rotate by the first motor. Light from the light source passes through the first ripple glass that is rotating. Light refracts and changes with rotation of the first ripple glass so the slide projector can project an image with a dynamic effect.