Abstract:
A method of manufacturing and testing an electronic circuit, the method comprising forming a plurality of conductive traces on a substrate and providing a gap in one of the conductive traces; attaching a circuit component to the substrate and coupling the circuit component to at least one of the conductive traces; supporting a battery on the substrate, and coupling the battery to at least one of the conductive traces, wherein a completed circuit would be defined, including the traces, circuit component, and battery, but for the gap; verifying electrical connections by performing an in circuit test, after the circuit component is attached and the battery is supported; and employing a jumper to electrically close the gap, and complete the circuit, after verifying electrical connections. An electronic circuit comprising a substrate; a plurality of conductive traces on the substrate, with a gap in one of the conductive traces; a circuit component attached to the substrate and coupled to at least one of the conductive traces; a battery supported on the substrate and coupled to at least one of the conductive traces, wherein a completed circuit would be defined, including the traces, circuit component, and battery, but for the gap; and a jumper electrically closing the gap and completing the circuit, the jumper comprising conductive epoxy.
Abstract:
A method of manufacturing and testing an electronic circuit, the method comprising forming a plurality of conductive traces on a substrate and providing a gap in one of the conductive traces; attaching a circuit component to the substrate and coupling the circuit component to at least one of the conductive traces; supporting a battery on the substrate, and coupling the battery to at least one of the conductive traces, wherein a completed circuit would be defined, including the traces, circuit component, and battery, but for the gap; verifying electrical connections by performing an in circuit test, after the circuit component is attached and the battery is supported; and employing a jumper to electrically close the gap, and complete the circuit, after verifying electrical connections. An electronic circuit comprising a substrate; a plurality of conductive traces on the substrate, with a gap in one of the conductive traces; a circuit component attached to the substrate and coupled to at least one of the conductive traces; a battery supported on the substrate and coupled to at least one of the conductive traces, wherein a completed circuit would be defined, including the traces, circuit component, and battery, but for the gap; and a jumper electrically closing the gap and completing the circuit, the jumper comprising conductive epoxy.
Abstract:
A curable adhesive composition is provided which comprises an epoxy terminated silane. A thin profile battery and a substrate to which the thin profile battery is to be conductively connected are also provided. The curable adhesive composition is interposed between the thin profile battery and the substrate. It is cured into an electrically conductive bond electrically interconnecting the battery and the substrate. In another aspect, the invention includes a method of conductively interconnecting electronic components using a curable adhesive composition which comprises an epoxy terminated silane. The invention in another aspect includes interposing a curable epoxy composition between first and second electrically conductive components to be electrically interconnected. At least one of the components comprises a metal surface with which the curable epoxy is to electrically connect. The epoxy is cured into an electrically conductive bond electrically interconnecting the first and second components. The epoxy has an effective metal surface wetting concentration of silane to form a cured electrical interconnection having a resistance through said metal surface of less than or equal to about 0.3 ohm-cm.sup.2.
Abstract:
The replaceable power module includes a power section positioned between a cover and a frame. The cover is provided with clips to permit the attachment and detachment of the cover to the base as well the attachment and detachment of the power module to a surface mounted integrated circuit. The frame is provided with an opening for receiving the integrated circuit, and electrical contacts for electrically connecting the power module to the leads of an integrated circuit. The power section is electrically coupled to the frame and includes a battery and a crystal oscillator for controlling the integrated circuit.
Abstract:
An improved battery, an improved battery contact assembly and an improved method for attaching a battery to a substrate are provided. The battery includes a housing and a cover for attachment to the housing by crimping. During the crimping process a portion of the housing is bent over a portion of the cover such that a portion of the housing is substantially co-planar with a portion of the cover. Thus the two co-planar surfaces provide the positive and negative contact surfaces of the battery on a single side of the battery. The receiving portion of the contact assembly includes a substrate having a pair of contacts formed thereon. The contacts are shaped and sized to match the contact surfaces of the battery. The battery is attached to the substrate and traces using an electrically conducting adhesive.
Abstract:
A method and apparatus are described for selectively activating a secondary power source, such as a backup battery, for an electronic device, such as dynamic RAM. A connector is described in conjunction with a circuit board including a first contact coupled to the backup battery, and a second contact coupled to the corresponding input for backup power associated with an electronic device. In this state, an open circuit is presented such that the battery is isolated from the electronic device. A socket is described for cooperating with the connector, which includes mating contacts corresponding to the first and second contacts previously described, and a shunt for establishing electrical continuity between these mating contacts. In this manner, a completed circuit is established between the battery and the electronic device when the socket is attached. A bypass connection is also described for maintaining connection between the battery and the electronic device independent of the socket, so that the circuit board may later be removed without threatening loss of accumulated memory contents.
Abstract:
A memory board includes a board, a RAM (random access memory), a back-up battery for supplying a back-up power to the RAM, and a switch to switch a power source from a main power to the back-up battery when the voltage of the main power drops below a predetermined value. The back-up battery is located at the same position where either the switch or the RAM is located and mounted to cover the switch or the RAM.
Abstract:
A rechargeable type small electric appliance including a rechargeable battery having negative and positive terminals, the negative and positive terminals being, respectively, connected to a wiring board by a pair of lead members, in which at least one of the lead members is bent in an inverse U-shape so as to have first and second pieces and a bent portion connecting the first and second pieces, the first piece being secured to the wiring board, while the second piece is clamped, at a clamp portion thereof, to a corresponding one of the negative and positive terminals, the bent portion projecting outwardly beyond the clamp portion of the second piece in a radial direction of the rechargeable battery.
Abstract:
The present invention is a low cost electronic apparatus construction method which may be employed for hand held calculators, electronic learning aids and electronic games. This technique involves a simplification in the construction of the apparatus including reduction in the number of piece parts necessary for the assembly. The primary electrical circuit interconnection pattern of the electronic apparatus is printed upon a part of the case of the apparatus which must be nonconducting. This printed circuit pattern together with the construction of the back case includes connection portions for electrical connection to the major components of the apparatus which may include an integrated circuit, a display device and an electrical power source. The primary circuit pattern printed on the back case includes a plurality of interleaved comb key switch positions. The keyboard is constructed employing a plurality of keys aligned in registration with the key switch portions, each key having a shorting bar for causing electrical connection across the key switch portion when the key is depressed. The top case of the apparatus has an aperture for viewing the display device and a plurality of apertures for the keys. In an alternative embodiment, this top case also includes an aperture enabling light to shine on a photovoltaic power cell employed to generate the electric power needed to operate the apparatus.
Abstract:
An electrical interconnect board comprises a printed circuit board and a readout device. The circuit board comprises an insulating layer, and first and second electrically conductive layers. The first and second electrically conductive layers are arranged on opposite sides of the insulating layer. The circuit board comprises receptacles each configured for accommodating a battery cell of the battery module. The first electrically conductive layer electrically interconnects the battery cells with each other. The first and second electrically conductive layers are made from different electrically conductive materials. The first and second electrically conductive layers are connected through the insulating layer at a plurality of locations by a plurality of vertical interconnect accesses (VIAs). Each VIA generates a voltage depending on the temperature at a thermoelectric interface. The readout device senses the generated voltages of the VIAs and determines corresponding temperature values.