Abstract:
A carrier for transmitting a high frequency signal and a carrier layout method thereof are provided. The carrier includes a substrate, conducting wires and reference planes both formed on the substrate. The carrier layout method includes defining impedance and thickness of the carrier according to the high frequency signal and defining layout parameters according to the impedance and the thickness. The layout parameters include a conducting layer formed on the conducting wires, a coplanar waveguide encompasses both the reference planes and the conducting wires as a part thereof, roughness portions formed on the conducting wires, recessed portions formed on the conducting wires, and the substrate being a high loss tangent substrate. The layout is performed according to the layout parameters defined thereabove, so as to increase loss of the high frequency signal in transmission.
Abstract:
A waterproofing test device tests waterproofing performance of a unit under test (UUT). The UUT has thereon a test recess and an aperture. The aperture is hermetically sealed with a gas-permeable waterproof element. The waterproofing test device includes a carrying jig, a water-supplying unit, and a pressure-applying unit. The carrying jig carries the UUT and has a hermetic sealing portion and a gas-discharging through-hole disposed within the hermetic sealing portion. The water-supplying unit is disposed in the carrying jig and provided with a water outlet corresponding in position to the aperture of the UUT. The pressure-applying unit provides internal negative pressure for the UUT by discharging gas therefrom and tests internal pressure of the UUT. Further provided is a waterproofing test method for use with the device. Given the device and method, a waterproofing performance test can be performed on a UUT with an aperture or fissure by gas discharging.
Abstract:
A cut-edge positioning type soldering structure and a method for preventing a pin deviation can prevent a plurality of pins of an electronic component from being deviated when the pins are soldered onto a printed circuit board by a solder, and each of at least two solder pads includes at least two cut edges, and the solder pads are installed in an alignment direction on the printed circuit board, such that the cut-edge positioning type soldering structure and the method for preventing a pin deviation can improve the efficiency of manufacturing processes and reduce the manufacturing cost.
Abstract:
A curvature examining jig for examining the curvature of a circuit board quickly and accurately includes a platform and a carrier. An examining region is defined on the platform so as for the circuit board to be disposed flatly within the examining region. A recess is disposed in the examining region and configured to receive a protrusion of the circuit board. The carrier is slidably coupled to the platform, configured to move along the margin of the circuit board, and provided with a plurality of plug gauges facing the platform closely and configured to move to the examining region along with the carrier. Accordingly, the curvature examining jig is convenient in holding a circuit board having a protrusion, quick and accurate in examining the curvature of the circuit board, and effective in enhancing the efficiency of production lines.
Abstract:
A portable electronic device includes a body, a casing, and a resilient element. The casing accommodates the body such that the body can slide within the casing. The casing has an opening through which an electrical connection unit connected to the body protracts out of, or retracts into, the casing. The resilient element has an end connected to the casing and another end abutting against the body. The resilient element exerts a resilient restoring force upon the body in response to the sliding of the body. The casing has a stop structure configured to operate in conjunction with an engagement structure of the body and thereby limit the range of the sliding of the body. The engagement structure can be disengaged from the stop structure to separate the body from the casing. Accordingly, the portable electronic device has multiple uses, namely quick maintenance, easy assembly, body protection, and automatic accommodation.
Abstract:
A notch positioning type soldering structure and a method for preventing a pin deviation can prevent a plurality of pins of an electronic component from being deviated when the pins are soldered onto a printed circuit board by a solder, and each of at least two solder pads includes at least one notch, and the solder pads are installed in an alignment direction on the printed circuit board, such that the notch positioning type soldering structure and the method for preventing a pin deviation can improve the efficiency of manufacturing processes and reduce the manufacturing cost.