Abstract:
A multilayer ceramic device (38) has a capacitor body (42) defining a plurality of electrical terminals on an outer surface thereof. The terminals are interdigitated such that a respective first polarity terminal (44) will be adjacent to a respective second polarity terminal (46) (and vice versa). The capacitor body (42) contains a plurality of interleaved capacitor plates in opposed and spaced apart relation. Capacitor plates of the first polarity are electrically connected to respective first polarity terminals via a plurality of lead structures. Likewise, a plurality of lead structures electrically connect capacitor plates of the second polarity to respective second polarity terminals.
Abstract:
An electrical device comprising: - an outer casing (2); - a plurality of electrical connection terminals accessible from outside the casing (2), comprising in turn of at least one first, second and third terminal (31, 32, 33); - at least one electrical jumper (41), positioned inside the casing (2), which electrically connects the first and second terminal (31, 32); said first electrical jumper (41), at 20°C, having an electrical resistance between 0 and 0.05 ohm; inside the casing (2) said third terminal (33) being electrically insulated from the first and the second terminals (32, 32).
Abstract:
A low-EMI circuit which realizes a high mounting density by converting the potential fluctuation of a power supply layer with respect to a ground layer which occurs on switching an IC device etc., into Joule's heat in the substrate without using any parts as a countermeasure against the EMI. Its structure, a circuit board using it, and a method of manufacturing the circuit board are also disclosed. Parallel plate lines in which the Q-value of the stray capacitance between solid layers viewed from the power supply layer and ground layer is equivalently reduced and which are matchedly terminated by forming a structure in which a resistor (resistor layer) and another ground layer are provided in addition to the power supply layer and the ground layer on a multilayered circuit board. A closed shield structure is also disclosed. This invention can remarkably suppress unwanted radiation by absorbing the potential fluctuation (resonance) which occurs in a power supply loop by equivalently reducing the Q-value of the stray capacitance, absorbing the standing wave by the parallel plate lines matchedly terminated and, closing and shielding the parallel plate lines.
Abstract:
The resistance-trimming resistor has two ends overlapping and thus electrically connected to the facing ends of the two conductors, respectively. The function-trimming resistor extends perpendicular to the second conductor, and has one end portion which extends at right angles to, overlaps and is therefore electrically coupled to the thin intermediate portion of the second conductor. A laser beam is applied onto the resistance-trimming resistor, while the resistance between those ends on the conductors which face away from each other is being measured. A notch is cut in the function-trimming resistor. A laser beam is applied onto the function-trimming resistor, thereby cutting a notch; the resistor is cut into two parts; thus the resistance is adjusted between the ends of the conductors.