enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Printed circuit board manufacturing - Wikipedia

    en.wikipedia.org/wiki/Printed_circuit_board...

    Coated tungsten carbide is used because board materials are abrasive. High-speed-steel bits would dull quickly, tearing the copper and ruining the board. Drilling is done by computer-controlled drilling machines, using a drill file or Excellon file that describes the location and size of each drilled hole.

  3. Cross section (electronics) - Wikipedia

    en.wikipedia.org/wiki/Cross_section_(electronics)

    Samples may first be cut down in size, for example, around a via in a PWB or around a ceramic capacitor soldered to a PWB. Samples may be prepared by encapsulation in a rigid material such as epoxy to keep the sample intact during grinding and with a vacuum step to fill in air gaps and create a solid sample with no voids. However, cross ...

  4. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.

  5. File:Scale.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Scale.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  6. Coupon (PWB) - Wikipedia

    en.wikipedia.org/wiki/Coupon_(PWB)

    A coupon or test coupon is a printed circuit board (PCB) used to test the quality of a printed wiring board (PWB) fabrication process. Test coupons are fabricated on the same panel as the PWBs, typically at the edges. Coupons are then inspected to ensure proper layer alignment, electrical connectivity, and cross sectioned to inspect internal ...

  7. Printed circuit board - Wikipedia

    en.wikipedia.org/wiki/Printed_circuit_board

    A printed circuit board (PCB), also called printed wiring board (PWB), is a laminated sandwich structure of conductive and insulating layers, each with a pattern of traces, planes and other features (similar to wires on a flat surface) etched from one or more sheet layers of copper laminated onto or between sheet layers of a non-conductive ...

  8. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The files are then exported in PDF 1.3 format according to the file header. When taking a screenshot under Mac OS X versions 10.0 through 10.3, the image was also captured as a PDF; later versions save screen captures as a PNG file, though this behavior can be set back to PDF if desired.

  9. PWB - Wikipedia

    en.wikipedia.org/wiki/PWB

    PWB may refer to: Partial Weight-bearing, in which patients are instructed to put only a certain amount of weight on their leg after surgery; Printed wiring board; Psychological well-being; Programmer's Workbench, an early UNIX from Bell Labs, see PWB/UNIX