Abstract:
Mounting system for mounting an electronic module on a carrier, comprising an electronic module with a plate-like base, and with contacts; a first elongate profile provided with a receiving channel for receiving therein the first side of the base; and a second elongate profile provided with a number of clamping tongues configured to hold the second side of the base; which first and second profiles can be arranged on the carrier such that the or each electronic module can be mounted between the first and the second profile.
Abstract:
A circuit-terminal connecting device comprising a first connector (12) having a first housing (15) fixed to a main circuit board (11) and first contacts (16) supported by the first hous i ng (15) to be connected with first circuit-terminals provided on the main circuit board (11) and a second connector (14; 40) having a second housing (17; 41) attached to a flat circuit member (13) and second contacts (18; 42) supported by the second housing (17; 41) to be connected with second circuit-terminals (20) provided on the flat circuit member (13). The first housing (15) of the first connector (12) fits into a hole (22; 44) formed in the second housing (17; 41) of the second connector (14; 40) so as to create an electrical piling connection between the main circuit board (11) and the flat circuit member (13) wherein the flat circuit member (13) is laid on top of the main circuit board (11) and the first circuit-terminals are electrically connected with the second circuit-terminals (20) through the first and second connectors (12, 14; 40).
Abstract:
A piezoelectric oscillator comprising a piezoelectric vibrator with a piezoelectric vibrating element housed in a package and bottom terminals formed on the outer side of the bottom of the package, a circuit board with at least one electronic circuit component mounted and conductor patterns formed on the top side, and columnlike supports which mechanically and electrically connects the bottom terminals of the piezoelectric vibrator and the conductor patterns on the circuit board. The piezoelectric oscillator has a smaller board occupation area, and can be manufactured by quantity production using a batch process at a high productivity and a reduced cost.
Abstract:
A piezoelectric oscillator which has a piezoelectric oscillator packaged with column members fixed on a wiring board for mounting electronic components constituting an oscillation circuit or a temperature compensation circuit, removes a variation in dimensions of the support member or a wrong placement of column members during reflow, and shows a high reliability and an excellent working efficiency. This oscillator is a quartz oscillator comprising a wiring board which mounts electronic components constituting an oscillation circuit and a temperature compensation circuit on a land on the top and has an external electrode and a quartz oscillator fixed with a predetermined gap via column members fixed on the top of the wiring board. This oscillator has the bottom electrode of the column member electromechanically fixed to a column member fixing pattern formed on the top of the wiring board, and the upper electrode of the column member electromechanically fixed to the bottom electrode of the quartz oscillator.
Abstract:
A solid printed circuit board is manufactured by bonding upper and lower printed circuit boards having different shapes and provided with wirings formed on surfaces thereof. A bonding layer is made of insulating material containing thermosetting resin and inorganic filler dispersed therein, and has a via-conductor made of conductive paste filling a through-hole perforated in a predetermined position of the bonding layer. This circuit board provides a packaging configuration achieving small size and thickness and three-dimensional mounting suitable for semiconductors of high performance and multiple-pin structure.
Abstract:
Disclosed are a set-top box configured for preventing hacking through microelectronic devices (150) or wirings (510) on a printed circuit board therein, and a method of depositing a high-molecular material (520) therefor. The prevention of hacking within a set-top box is obtained by depositing and curing a liquid high-molecular material (520), which includes epoxy and a curing agent, on an area(s) of microelectronic devices (150) or on an area(s) of wirings (510) connecting the microelectronic devices (150) through which the interior of the set-top box may be hacked. In addition, the liquid high-molecular material (520) is deposited in a frame (600) manufactured to a size and shape desired for deposition around the area(s) to deposit the high-molecular material (520) in uniform dimensions and height and thereby reduce manufacturing cost.
Abstract:
The present invention provides an electronic circuit unit that is suitable for miniaturization and has a good manufacturing productivity. An electronic circuit unit of the present invention comprises a circuit board 3 mounted within a frame member 1, an electronic component 5 with a cover mounted on the circuit board 3, and a plurality of linear terminals 9 passing through and being mounted in the circuit board 3. The terminals 9 comprise at least first and second terminal groups 7a and 7b arranged at an interval between the respective terminals in a line. The first and the second terminal groups 7a and 7b are arranged in a line in the vicinity of one side of the circuit board 3. An opening portion 10 is provided between the first and second terminal groups 7a and 7b, and the electronic component 5 with the cover is mounted on the circuit board 3 while being disposed in the opening portion 10. As a result, a space factor for the arrangement of the electronic component 5 with the cover is very good, and thus it is possible to reduce a widthwise dimension of the circuit board 3, thereby obtaining a small-sized electronic circuit unit.