Abstract:
A circuit board (10) on which surface electronic components (15) are mounted during a reflow process comprises a circuit portion (12), a surrounding circumferential portion (13) and at least one elongated opening (14) formed in the surrounding circumferential portion substantially parallel to the direction the board travels during the reflow direction (16) to prevent electronic component soldering failures that may occur as a result of the deflection of the circuit board flow process.
Abstract:
A drive circuit module comprises a board formed of a hard base material having no flexibility, a circuit pattern formed on the board and having a plurality of input terminals and output terminals supported by a flexible insulation film, and a carrying section for carrying a drive LSI and the like on the circuit pattern; characterized in that the board is provided with at least one cutout on a surface opposite to the surface on which the circuit pattern of the board is formed, thereby making flexible the board in a direction in which the output terminal surface and the carrying section surface are different from each other.
Abstract:
In a product including a printed circuit board which comprises a printed-circuit part and a terminal part and including a rechargeable battery having two terminals, and including retaining device for mechanically retaining the battery, the retaining device and the printed circuit board are arranged and constructed so as to be mechanically separate from one another, in such a manner that the printed circuit board does not form part of the retaining device, and each of the two terminals of the battery is connected to a terminal zone on the terminal part of the printed circuit board in an electrically conductive manner via a mechanically flexible and electrically conductive connecting device.
Abstract:
A circuit board substrate assembly includes a generally planar circuit board substrate material having a longitudinal axis extending along a length of the substrate material between a first end and a second end thereof. The circuit board substrate material further has a first edge and a second edge extending along the length of the circuit board substrate material between the first end and the second end. A plurality of openings are defined in the substrate material. Each opening extends between a first distance from the first edge of the circuit board substrate and a second distance from the second edge of the circuit board substrate. Further, each opening separates adjacent circuit forming regions lying along the longitudinal axis and has first and second opposing end portions. The first end portions of each opening lie along a first singulation axis of the substrate material parallel to the longitudinal axis and the second end portions of each opening lie along a second singulation axis of the substrate material parallel to the longitudinal axis. Removing interconnect material along the first singulation axis and second singulation axis provide for singulation of the circuit forming regions and any circuits thereof.
Abstract:
A modular high-frequency oscillator structure utilizes a master circuit board to form a plurality of oscillator units. The master circuit board has an upper, middle and lower copper foil layer. The upper copper foil layer has a plurality of component circuit patterns and a plurality of positive voltage, ground and signal regulation circuit patterns. The middle copper foil layer has a plurality of power transfer and ground transfer circuit patterns. The lower copper foil layer has a large common ground circuit pattern. The master circuit board is etched in such a manner that the upper and lower copper foil layers are cut through to isolate each oscillator unit and the middle copper foil layer remains uncut.
Abstract:
A process for making multiple microelectronic ceramic substrates uses an interface layer between stacked layers of green sheets that are laminated with the interface layer, then fired to produce the ceramic substrates. The interface layer acts to protect the substrates, and to hold them together before firing, then thermally degrades at a desired point in the firing cycle to separate the individual substrates. The invention also includes the ceramic substrates produced by the method.
Abstract:
A circuit board has a socket opening for a twist-in lamp bordered by a pair of arcuate conductors. The circuit board is configured to define a socket for a bi-pin lamp located concentrically within the opening and supported by bridges across the opening. The bridges carry conductors for the bi-pin lamp. The bridges are frangible to allow the socket for the bi-pin lamp to be removed. When a bi-pin lamp fails in service it is removed along with its socket and a twist-in lamp is installed in the remaining socket.
Abstract:
A tab (22) at the edge of a panel (10) may be advantageously sheared by transporting the panel into an in-line shear (30). As the panel is transported into the shear, an adjustable rail (52) engages the tab (22) to guide the panel to maintain its orientation. The rail (52) is adjusted after the tab (22) has been sheared to now engage the panel (10) along its edge formed by the removal of the tab. In this way, the rail (52) can guide the panel upon transport from the shear.
Abstract:
In a method of separating a product G connected to a skeleton portion S of work W via a micro joint M, from the skeleton portion, the product is separated from the skeleton portion by striking the skeleton portion in the vicinity of the micro joint to cut off the micro joint from the skeleton. Further, the die pair used for the above-mentioned method comprises a punch 17A provided with a projecting portion 17T at an end thereof and movable up and down; and a die 19A arranged under the punch and formed of an elastic substance. In this method, it is possible to separate products from the skeleton portion of the work efficiently by breaking the micro joints without scratching the products and without generating noise. Further, the separating work of the products from the skeleton portion can be easily automated.
Abstract:
In FIG. 1, an electrical circuit on a circuit board 9 can be controlled by operation of switches 2B, 3B, 4B. These are operated by removing portions of the board 9, effected by the snapping off of respective corresponding cover member portions 2A, 3A and 4A.When used as a thermal log this control can respectively activate, deactivate and display the thermal data but avoid any tampering.