Abstract:
A panel board has a first voltage layer sandwiched between two ground layers at a close spacing to produce a large distributed capacitance; the two ground layers are connected by plated-through conductive holes spaced regularly across the board; a second (exposed) voltage layer is connected by regularly spaced plated-through holes to the first voltage layer, increasing the current carrying capacity of, and reducing the resistance across, the board; the plated-through holes are arranged in rows and columns in a pattern permitting the mounting of decoupling capacitors, at any point on the board, in a position parallel to the rows or parallel to the columns; and a socket terminal can be electrically connected directly to the exposed voltage layer or to the exposed ground layer using a ring connector.
Abstract:
A multilayer printed circuit board for TTL logic components provides an approximate 100 ohm characteristic impedance between external microstrip signal lines and internal ground and voltage planes. The addition of two internal microstrip signal plane lines permits a much greater interconnectability capability and also saves a large percentage of spatial area for component mounting while still maintaining the 100 ohm impedance characteristic.
Abstract:
The present invention relates generally to electric circuit testing, building, or implementing using a breadboard style PCB. Aspects of the present invention include eliminating the need to use hookup wires when building and testing electric circuits on PCBs. In embodiments, a PCB system having rows and columns of signal tie points connected in a breadboard layout and using an embedded wire and a solder bridge to form partial connections between signal tie points. In embodiments, the embedded wire and solder bridge is capable of connecting a column of signal tie points. In embodiments, the embedded wire and solder bridge is capable of connecting a power rail to a signal tie point. Thus, a circuit can be implemented and tested by applying a small amount of solder to the solder bridge without the need for hookup wires.
Abstract:
In accordance with one embodiment, an electrical connector can be mounted to a first printed circuit board to obtain a first current capacity, and the electrical connector can be mounted to a second printed circuit board to obtain a second current capacity that is lower than the first current capacity.
Abstract:
A substrate (1) for a portable data carrier (10) comprises an electrical component (2, 3), such as an antenna, which has two parts applied on mutually opposite surfaces of the substrate (1). The parts of the electrical component (2, 3) comprise an electrically conductive material and are electrically conductively connected to one another in through-plating regions (4, 5, 6, 7) of the substrate (1) through perforations (8, 13) of the substrate (1). The perforations (8, 13) are produced by means of a laser and have a maximum width of a maximum of 20 μm. A through-plating region (4, 5, 6, 7) preferably has a multiplicity of perforations (8, 13) distributed over the through-plating region (4, 5, 6, 7).