Abstract:
A condenser microphone mountable on a main PCB is disclosed. The condenser microphone of the present invention comprises a cylinder-shaped case having one side which is opened and the other side which is closed; a first metal ring inserted into the case for an electrical connection; a disk-shaped back plate having a sound hole to be connected electrically to the case through the first metal ring; a ring-shaped spacer; a cylinder-shaped insulating ring having an open top part and an open bottom part to provide an electrical insulation and a mechanical support; a diaphragm inserted into the insulating ring and facing to the back plate while interposing the spacer between the diaphragm and the back plate; a second metal ring for being connected electrically to the diaphragm and supporting mechanically the diaphragm; and a PCB that is mounted with electronic components and is formed with a sound hole, the PCB being connected to the back plate through the second metal ring and the case, the PCB including connection terminals connected to the outside. Accordingly, the condenser microphone maintains the sound quality in a good state since the sound wave transfer path is short even if the component mount region of the main PCB on which the condenser microphone is mounted is directed toward an inner side of the electronic product at need.
Abstract:
An apparatus including an actuation membrane unit to generate air movement in a direction of a heat generating device to reduce an ambient temperature of the device.
Abstract:
This publication discloses an acoustically active element formed in a multi-layer circuit-board structure (20, 22, 24, 25), a method for manufacturing it, and a multi-layer circuit-board structure. The acoustically active element includes an internal chamber (21) and a membrane (18) or beam arranged in connection with the internal chamber (21), which acts as a vibrating element and is connected electrically to external circuits, in order to produce or measure an acoustic effect. According to the invention, the resonance chamber (21) is formed inside the multi-layer circuitboard structure (20, 22, 24, 25), in connection with the process of manufacturing the circuit board.
Abstract:
Apparatus and methods of electrically connecting integrated circuits (40-50) and transducers (28-38) are described. In particular, a transducer (60) includes a base (62) mountable on a substrate (64) (e.g., a printed circuit board), and an input/output (I/O) lead (66) configured to contact an I/O lead (68) of an integrated circuit (70) mounted on the substrate (64). The transducer (60) may be mounted on the substrate (64) to contact the transducer I/O lead (66) to the integrated circuit I/O lead (68). The transducer I/O lead (66) is configured to electrically connect to the integrated circuit I/O lead (68) independently of any electrically conductive path of the substrate (64). The direct electrical connection between the transducer (60) and the integrated circuit (70) provides a high-speed communication channel that avoids the parasitic and high-inductance limitations generally associated with conventional metallic printed circuit board traces. At the same time, the transducer (60) is compatible with existing printed circuit board technologies and integrate circuit technologies and, therefore, may be readily integrated into existing computer systems.
Abstract:
Piezoelectric material (120) is embedded in epoxy layers (220) of circuit cards (102) to control thermal expansion and contraction as a function of temperature changes. A temperature sensor (212) and thermostat (214) generates a controlled voltage as a function of temperature and applies the voltage to piezoelectric blocks (120) within the circuit card. Local areas of the circuit card can have different amounts of piezoelectric material (120) or different thermostats (214). Piezoelectric blocks (120) can be arranged in regular patterns or can be randomly or pseudorandomly placed.
Abstract:
A piezo-oscillator reduced in current consumption and size, comprising a crystal oscillator as a piezoelectric vibrator, an oscillation circuit, a plurality of surface mounted heaters, and a temperature control circuit for controlling the heating temperatures of the heaters, all mounted on a printed circuit board, wherein the case and lead terminals of the piezoelectric vibrator are simultaneously heated respectively by separate heaters so that the piezoelectric vibrator, the oscillation circuit and the temperature control circuit can be heated at the same time.
Abstract:
A disposable portable electronic device has a body (22) of prescribed length and thickness and constructed of elongated, ribbon-like substrate (64) of dielectric material. The substrate has a contiuous length much greater than the length of the body and a thickness much less than the thickness of the body. Conductors and components are formed on the substrate. The dielectrical material of the substrate is folded upon itself into short lengths juxtaposed on one another within the thickness of the body, and the juxtaposed lengths of the substrate are secured together to establish a self-sustaining structure which forms the body of the device.
Abstract:
With the intention of simplifying the manner in which a loudspeaker is mounted on a circuit board while maintaining requisite sealing and damping between the loudspeaker and the circuit board, the loudspeaker is affixed directly to the circuit board (1) by means of a double-side adhesive annulus (3) with the diaphragm of the loudspeaker facing towards the board, wherein the board has holes (4) located opposite the loudspeaker. The number of holes (4) provided and the size of the holes may be adapted to provide the best sound production in accordance with application. When a loudspeaker is mounted in this way, all components can be collected on the circuit board and therewith simplify manufacture of the telephone apparatus as such, irrespective of whether the circuit board is in the handset or some other part of the apparatus.
Abstract:
Methods for protecting an electronic device from contaminants by applying different insulating and conducting materials to different vital components of a device are disclosed. In one embodiment, the method comprises applying an electrically insulating material, such as isobutylene isoprene rubber, to one or more connectors and components located on the printed circuit board of the device. The method further comprises applying a polymer capable of carrying a charge, such as a silicone-based polymer, to different connectors and components on the printed circuit board. The method leads to different components being coated with different materials. Electronic devices that are protected by such coatings are also disclosed, such as smart phones, computers, head phones, and gaming devices, all of which show improve protection from contaminants, especially liquid contaminants.
Abstract:
In a connection panel for electronic components (1) comprising a plurality of insulating layers (8, 9, 2, 11, 12) and conductive layers (13, 14, 15) and further comprising an electronic sensor (4), the sensor (4) is comprised of at least one flexure member (4') formed by a flexure layer (2), the flexure member (4') protruding from the flexure layer (2) and into a clearance (3) within the flexure layer (2) and carrying at least a part of a flexure sensing device (6).