摘要:
A system for charging and discharging batteries includes a battery module, an adapter, a charger, and an electronic device electrically connected to the charger and the battery module. The battery module includes a first cell battery, a second cell battery, and a first switch electrically connected to the first and second battery cells. The adapter receives an AC voltage, and converts the AC voltage to a DC voltage. The charger receives the DC voltage, and charges the battery module accordingly. The electronic device is electrically connected to the charger and the battery module. When the charger charges the battery module, the first switch is switched to electrically connect the first and second battery cells with the charger in series. When the battery module discharges to the electronic device, the first switch is switched to electrically connect the first and second battery cells with the electronic device in parallel.
摘要:
An exemplary power supply system for feeding electric power to an electronic device is provided. The power supply system includes an internal battery installed inside the electronic device and an external battery connected to the internal battery through a first switch. When the internal battery is above a set energy level, the first switch is turned off and the internal battery outputs electric power to the electronic device. When the internal battery falls below the first set energy level, the first switch is turned on and the external battery outputs electric power to the electronic device. A power supply method based upon the power supply system is also provided.
摘要:
An optical touch-control includes: four light-guide modules cooperating to define a touch-control zone, each of the light-guide modules including a light-guide strip that has a light-entry surface oriented toward a respective one of first and second ones of corners defined by the light-guide modules, and a light-exit surface that is oriented toward the touch-control zone; two light-emitting modules disposed in the first one of the corners and two light-emitting modules disposed in the second one of the corners, each of the light-emitting modules being oriented toward the light-entry surface of a corresponding one of the light-guide modules, light that enters each of the light-guide modules via the light-entry surface thereof exiting from the light-guide module via the light-exit surface thereof; and three image acquisition modules disposed respectively in the first and second ones of the corners and a remaining one of the corners, and oriented toward the touch-control zone.
摘要:
A clamping assembly for stringing machine includes a slide member, a positioning device, a control device and a rail. The positioning device and a tube are located on two ends of the slide member. The control device includes a pin, a ring-shaped member and a knob. The pin is pivotably connected with the knob. The tube includes an engaging section and a receiving section. The receiving section has a positioning pin and a spring which biases the positioning pin so as to move the positioning pin axially. The knob having a pin hole defined in an underside thereof and can be securely positioned by inserting the insertion member into the pin hole. The knob includes a release button which is connected with a bolt. When pressing the release button, the bolt moves the insertion member which releases the knob.