| 摘要 |
A method of making a high-voltage, noninductive, film-type resistor by providing on an insulating substrate a coating of resistive material. A laser beam is then operated to cut through the coating and remove portions so shaped that the remaining coating portions form a zigzag line. The laser cutting is so effected that each zig converges toward the adjacent zag at an angle sufficiently small that there is a major inductance-cancellation effect. Stated more definitely, the laser cutting is done by making an elongated laser cut through the coating to thus expose a portion of substrate beneath the cut, then making another laser cut substantially parallel to the first-mentioned cut and having a length substantially different from that of the first-mentioned cut, thus exposing a portion of substrate beneath such other cut, and then repeating the cutting steps but with cut lengths and positions progressively different in such manner that during the repetitions the laser-beam creates a zigzag line of resistive material. |
