摘要:
Power supply equipment includes circuitry for converting an input voltage to first and second DC output voltages. At least one of the output voltages is programmable in response to a voltage control signal. A first output port provides the first DC output voltage to a first electronic device and a second output port provides the second DC output voltage to a second electronic device. The conversion circuitry provides power sufficient to simultaneously power the first electronic device at the first DC voltage and the second electronic device at the second DC voltage.
摘要:
Provided is a wiring substrate which enables wiring density to be increased and enables transmission speed of signals to be adjusted without making a design change of wirings. A wiring substrate 100 is provided with a first terminal 110, a second terminal 120, a first wiring 112 and a second wiring 114. The first wiring 112 is such that one end thereof is connected to the first terminal 110, and is formed on the wiring substrate 100. The second wiring 114 is such that one end thereof is connected to the second terminal 120, and is formed on the wiring substrate 100. One end of each of a plurality of third wirings formed on the wiring substrate 100 is connected to the other end of the first wiring 112, and one end of each of a plurality of fourth wirings formed on the wiring substrate 100 is connected to the other end of the second wiring 114. The other end of at least one third wiring and the other end of at least fourth wiring are connected together.
摘要:
A small form factor power supply includes a switching transformer, control circuitry and rectifier circuitry, each contained within a housing. The switching transformer has a planar core and windings which surround at least a portion of the planar core. The control circuitry includes at least one surface mounted component, to control a switching device to couple a source of DC power to a primary of the switching transformer at a switching frequency. The rectifier circuitry is coupled to a secondary of the switching transformer to provide a DC voltage. The housing contains the switching transformer, the control circuitry and the rectifier circuitry, wherein a height of the housing is not greater than 0.75 inches.
摘要:
A universal substrate includes a plurality of inner pads and a plurality of outer pads. A plurality of bifurcate wirings and a plurality of fuses are formed on a surface of the substrate. The fuses are connected with the bifurcate wirings in series. By the bifurcate wirings and the fuses, each of the inner pads is electrically connected to all of the outer pads to provide optional electrical disconnections therebetween. Accordingly, the universal substrate can provide for various chips with different serial arrangements of bonding pads without replacing or manufacturing another kind of substrate.
摘要:
A motherboard includes a chipset, a first connector pad suitable for receiving a first type of PCI connector, a second connector pad suitable for receiving a second type of PCI connector, a plurality of first transmission lines, a plurality of second transmission lines, and a plurality of areas for mounting switches. One end of each first transmission line is connected to the chipset, another end of each first transmission line is connected to an end of a corresponding area, one end of each second transmission line is connected to another end of the corresponding area, another end of each second transmission line is connected to the second connector pad, the first connector pad is connected to the plurality of first transmission lines, and the switches are selectively mounted on the plurality of areas.
摘要:
A small form factor power supply includes a switching transformer, control circuitry and rectifier circuitry, each contained within a housing. The switching transformer has a planar core and windings which surround at least a portion of the planar core. The control circuitry includes at least one surface mounted component, to control a switching device to couple a source of DC power to a primary of the switching transformer at a switching frequency. The rectifier circuitry is coupled to a secondary of the switching transformer to provide a DC voltage. The housing contains the switching transformer, the control circuitry and the rectifier circuitry, wherein a height of the housing is not greater than 0.75 inches.
摘要:
The present invention is directed to a system that programmably interconnects integrated circuit chips and other components at near-intra-chip density. The system's contact structure allows it to adapt to components with a wide variety of contact spacings and interconnection requirements, the use of releasable attachment means allows component placement to be modified as needed, the system identifies the contacts and the components to facilitate specifying the inter-component connections, and the system provides signal conditioning and retiming to minimize issues with signal integrity and signal skew.
摘要:
An assembly has a mechanically inaccessible or difficult-to-access circuit, which has an electrical component that is irreversibly changeable by a current pulse; the irreversible change of the component is capable of switching the circuit from a first operating state into a second operating state, wherein the assembly has mechanically accessible supply lines via which it is possible to supply the current pulse for the irreversible change of the electrical component.
摘要:
A circuit board structure with embedded selectable passive components and a method for fabricating the same are proposed, wherein a plurality of passive components are embedded in a circuit board and a plurality of electrical connections are formed on a surface of the circuit board and electrically connected to the passive components. A circuit structure is formed close to the electrical connections for selectively forming a conductive layer thereon to electrically connect a portion of the passive components according to different electrical situations, in order to provide a set of passive components for electrical design of electronic devices.
摘要:
A tool for programming integrated circuits which reduces redundancy of parts by making different and multiple programmable integrated circuit sockets of particular sizes and shapes adaptable to more than one programming cable, and therefore many different integrated circuits. By inserting a small interconnect adapter board onto the main programming board, it rewires the main board such that one or more of the included device programming sockets is connected properly to the correct in-system cable connector required by the manufacturer of the particular integrated circuit being programmed. Since the integrated circuit sockets are not permanently wired to a particular programming cable connector, the programming adapter is extremely versatile.