| 摘要 |
1,018,979. Spark erosion. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. April 16, 1963 [April 19, 1962], No. 14850/63. Heading B3. Part of a thin metal layer 2, Fig. 1 (not shown), on an insulating or semi-conducting base 1 is removed by spark erosion between the layer and a pin electrode 4. This has an oblique face 5 and is rotated whilst being traversed across the layer 2. The invention is used in the manufacture of precision capacitors and resistors, and optical image amplifiers. |
