Here Is A quick Cure For Flat Cable > 자유게시판

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In the current invention flat conductor cable having a number of flat conductors disposed in spaced, parallel arrangement in a flat strip of insulating material is shielded by a steel layer applied by electroless and electrolytic plating. Flat cables, which have multiple ribbonlike conductors disposed in parallel, spaced association inside a strip of insulating materials, are often made by laminating the conductors between skinny, flexible insulating films. It should be noted that the cable for carrying a signal and the cable for carrying electric energy are repeated alternately in the only flat cable formed by the fixture means. Conventionally, the flat cables have been designed such that sign cables for carrying signals and energy cables for supplying the electric energy have been disposed alternately for avoiding crosstalk between the alerts. It needs to be famous that the cables forty one of FIG. 5A are used for carrying the alerts and designated in FIG. 5A as "S." FIG. 5B, on the other hand, shows the flat cable 24b in the state that the cables forty one are bonded to the fusible tape 43 at the bottom apex. Then again, the electrical efficiency of the shield is not affected by having the shield being comparatively movable with respect to the tape cable.

In the foregoing SCSI-II interface, however, it's prescribed such that two rows of pins are supplied within the connector and such that the pins for signals are only in one of many foregoing two rows of the pins. The ensuing cable structure is more versatile than spherical cable and it's thus advantageous for use as an interconnecting medium between components which transfer in relation to each other. Cable connecting sensitive digital parts working in proximity to tools which produces radio frequency energy or electrical noise must be surrounded with a protecting metallic sheath or shield to avoid transmission of spurious indicators or "spikes." If essential, the shield may be connected with a floor conductor alongside the size of the cable to assure correct grounding of any interfering currents. In the course of the transmission of high-frequency alerts, the ground conductors situated between adjacent signal-carrying conductors (which may be each other or every third, fourth, etc. conductor in the tape cable) are controlling a major portion of the characteristic impedance. A main goal of the ground conductors within the flat cable is impedance control.

For such cases the h/D dimensions--by means of the present formula--will be chosen to control the shield's impact on the characteristic impedance inside a number of (1-4) p.c only, thus still holding the advantages this invention represents. Copper is deposited at a price of approximately 0.0001 inch per 2.1 minutes at a present density of 50 amperes per square foot and at one hundred % effectivity. The flat conductors 11 will be made of any electrically conductive metal similar to copper. The number of conductors, the width and thickness thereof and the spacing between conductors can be diverse extensively, depending on the necessities for the actual cable. The thickness of height of the flat flexible tape cable, and accordingly the minimum spacing between the periphery of the shield (i.e., in cross part), is indicated in FIG. 2 by the reference character h. As well as, the extra efficient heat dissipation proven by flat cables enables larger currents to be carried per equal conductor cross part.

This invention pertains to flat conductor cables and more particularly to shielded flat cables. Connection of the shield to a ground conductor in such shielded cable has been obtained by exposing the flat surface of a number of of the conductors in order that the shield is pressed against the conductor during lamination. Continuous and dependable contact between he shielding layer and a ground conductor is obtained by exposing a portion of the surface of the conductor along the size of the cable. The kind of shield structure and the jacket chosen for various designs may be such that when the cable flexes the shield doesn't comply with the floor of the dielectric extraordinarily tightly. The shield is not essentially bonded to the tape cable thereby enhancing the flexibility of the composite structure. FIG. 5 is an isometric view, partially damaged away, of a shielded cable having a perforated shield. FIGS.3A-3E present the connector 22 intimately, whereby FIG. 3A exhibits the contact part 25 of the connector 22 in a front view, FIG. 3B reveals the contact part 25 in a plan view, and FIG. 3C reveals the contact part 25 in a side view.