| 摘要 |
<p>1481340 Electric couplings ITT INDUSTRIES Inc 17 Oct 1974 [19 Nov 1973] 45045/74 Heading H2E To supply high or ground voltage to contacts of an edge connector 12 two self-supporting metallic layers 18, 16 are superposed with insulation 38 between them and between 16 and a printed circuit board 20 which provides the back wiring. Contacts 42a, 42b, 42c are pressfitted into the p.c.b. and if voltage or ground is required a metal bush connects them electrically and mechanically to the appropriate layer at that voltage. In a second embodiment only the lower layer is self-supporting and the second is deposited on the lower side of the p.c.b.</p> |
