APPARECCHIATURA E PROCEDIMENTO PER FABBRICARE IN POTENZIONAMENTO DI RREGOLAZIONE FINE

摘要

Apparatus and method of manufacturing a trimmer potentiometer including a nonconductive substrate. A conductive track is deposited on a first surface of the substrate. Resistance material is also deposited on the surface of the substrate to form a resistance path. Nonsolderable material is deposited on selected portions of the conductive track to form dam sections thereon. Terminal pins are soldered to the ends of the conductive track, the dam sections restricting the flow of solder along the conductive track to essentially the end portions thereof.