Circuit arrangement having a plurality of circuit units and...

Details Circuit arrangement having a plurality of circuit units and... Circuit arrangement having a plurality of circuit units and...

H - Electricity

05

K

H05K 3/36 (2006.01) H05K 3/34 (2006.01) H01R 13/66 (2006.01)

Patent

CA 2191807

In an electrical circuit arrangement, specifically a se- quential blasting system as used in mining, the individual circuit units 12 are contacted by a continuous flat cable 10 in such a way that each wire 16 to 19 of the cable 10 has a bared section 21 which is soldered to a contact pad 22 to 26 of a conductor pattern 15 disposed on a printed circuit board 11 which carries the circuit elements of the circuit unit 12 This not only minimises the total number of contacts but also prevents the contact points from increasing the line resis- tance and prevents any faulty contact point from interrupting the line.

ans un agencement de circuit électrique, précisément un système de tir séquentiel comme ceux utilisés en abattage à l'explosif, les cartes d'équipement de circuit 12 sont reliées à un câble plat continu 10 de telle façon que chaque conducteur 16 à 19 du câble a une section dénudée 21 qui est soudée à un plot de contact 22 à 26 d'une impression conductrice 15 disposée sur une plaquette de circuits imprimés 11 qui porte les éléments de circuit de la carte d'équipement de circuit 12. Ceci non seulement minimise le nombre total de contacts, mais aussi empêche les doigts de contact d'augmenter la résistance de ligne et empêche la coupure de la ligne par un doigt de contact défectueux.

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