Abstract:
A print device with a surface identifying function includes a feed roller assembly; a print assembly; an obtaining module; a determining module; a control module; a sliding control module; at least one sliding bar and a printed surface identifying assembly. The sliding control module controls the printed surface identifying assembly to slide along the sliding bar. The obtaining module controls the printed surface identifying assembly to identify if one or both surfaces of the sheet of paper have already been printed, and generates a result. The determining module determines whether the paper is available for printing according to the result. The control module controls the print assembly not to perform the printing task and the feed roller assembly to take the paper out of the print device when the paper is unavailable for printing. A printing method is also provided.
Abstract:
A drop test apparatus includes a base panel, at least one height adjustment member attached to the base panel, and at least one angle adjustment member pivotally attached to the at least one height adjustment member. The at least one height adjustment member has a portion protruding upward from the base panel. A height of the portion is variable. The at least one angle adjustment member is configured for supporting a device thereon and capable of rotating to different angles.
Abstract:
A control method controlling a display panel comprising a pixel unit. The pixel unit is coupled to a data line and comprises a capacitor, a transistor, and a luminiferous device. The capacitor comprises a first terminal coupled to the data line and a second terminal coupled to the transistor. The voltage of the first terminal is increased and the voltage of the second terminal is reduced during a first period. The voltage of the first and the second terminals are controlled during a second period subsequent to the first period. The luminiferous device is lit according to the voltage of the capacitor during a third period subsequent to the second period. The voltage of the data line is maintained during the third period.
Abstract:
A system for testing electronic device includes an electronic device, a temperature detecting module, a testing instrument and a testing computer. The testing electronic includes a main board and a power supply. The main board includes a slot and a card inserted in the slot. A plurality of dummy loads is located on the card. The slot includes at least one voltage interface. The power supply includes at least one power wire electrically connected to the at least one voltage interface. The temperature detecting module detects temperature signals of the plurality of dummy loads. The testing instrument is electrically connected to the at least one power wire to test current signals or power signals of the at least one power wire. The testing computer receives and displays the temperature signals, the current signals and the power signals.
Abstract:
A power supply switch apparatus includes a voltage decreasing circuit, a rectification circuit, a comparison circuit, and a control circuit. The voltage decreasing circuit receives a first alternating voltage output from a power supply and converts the first alternating voltage to a second alternating voltage. The rectification circuit receives the second alternating voltage and converts the second alternating voltage to a first direct voltage. The voltage regulating circuit receives the first direct voltage and converts the first direct voltage to a second direct voltage. The comparison circuit receives the second direct voltage, compares the second direct voltage with a reference voltage, and outputs a control signal. The control circuit receives the control circuit and connects the power supply to different circuits according to the control circuit.
Abstract:
A computer enclosure includes a computer case and a power supply tray. The computer case includes a side plate and a rear plate adjacent to the side plate. A clamping portion is located on the rear plate, and an opening is defined between the side plate and the rear plate. The power supply tray is attached to the opening and includes a clipping member. The clipping member includes a securing portion extending from the power supply tray and a clipping portion rotatably attached to the securing portion. The clipping portion is engaged with the clamping portion to secure the power supply tray to the computer case, and the clipping portion is rotatable relative to the rear plate to disengage the clipping portion from the clamping portion.
Abstract:
A drop test device for testing a corner portion of a work piece, includes a bottom board, a support pillar, and a hanging mechanism. The support pillar is mounted on the bottom board. The hanging mechanism is mounted on the support pillar and is located above the bottom board. The hanging mechanism includes a support member. The support member includes a triangle base. Angles and sides of the triangle base hold the work piece thereon to have a corner of the work piece directed towards the bottom board.
Abstract:
A surface contact card holder includes a housing and a tray assembly. The housing includes a receiving frame and defining a receiving hole. The tray assembly includes a tray and a cover. The tray is slidable and receivable in the receiving frame from the receiving hole, the tray is configured for carrying a surface contact card therein. The cover is pivotally attached to the tray and covering the receiving hole. The cover includes a first end and a second end. When the first end of the cover is pressed to pivot the cover, the second end of the cover moves out of the receiving hole, the tray is slid out of the receiving frame to allow insertion and removal of the surface contact card from the housing.
Abstract:
A solder apparatus includes a platform, an operating mechanism, a solder member, a heater, and a control box module. The control box module includes a temperature controller and a temperature sensor. The temperature controller defines a predetermined temperature. The temperature sensor is capable of measuring the temperature of the solder member. The temperature controller has the heater heat the solder member when the measured temperature of the solder member is lower than or equal to the predetermined temperature, and has the heater stop heating the solder member, when the measured temperature of the solder member is higher than the predetermined temperature.
Abstract:
An electroacoustic vibrating transducer is disclosed. The electroacoustic vibrating transducer includes a frame defines a hollow space, a yoke positioned in the hollow space, and a elastic member mounted on the frame. The elastic member includes a circular plane lamina and a plurality of elastic arms extending outwardly from the circumference of the circular plane lamina. The yoke includes a bottom wall and a sidewall extending vertically from the bottom wall, and the sidewall defines a plurality of gaps corresponding to the elastic arms. Each of the elastic arms is intermittently received in the gaps during the vibration of the elastic member.