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2. Phenolic paper - Wikipedia

   en.wikipedia.org/wiki/Phenolic_paper

   The back of two circuit boards. The brown one is an FR-2 made of paper phenol. Phenolic paper is a material often used to make printed circuit board substrates (the flat board to which the components and traces are attached). It is a very tough board made of wood fibre and phenolic polymers. It is most commonly brown in colour, and is a fibre ...

3. Printed circuit board - Wikipedia

   en.wikipedia.org/wiki/Printed_circuit_board

   Through-hole (leaded) resistors Through-hole devices mounted on the circuit board of a mid-1980s Commodore 64 home computer A box of drill bits used for making holes in printed circuit boards. While tungsten-carbide bits are very hard, they eventually wear out or break. Drilling is a considerable part of the cost of a through-hole printed ...

4. Olive wood carving in Palestine - Wikipedia

   en.wikipedia.org/wiki/Olive_wood_carving_in...

   Olive wood is carved into crosses, boxes, picture frames, covers for historical and old books, candle holders, rosaries, urns, vases and Christmas ornaments as well as scenes of the Holy Family. [3] Olive wood branches are supplied by olive groves in nearby villages as well as from the Nablus and Tulkarm region, despite the difficulty of ...

5. Point-to-point construction - Wikipedia

   en.wikipedia.org/wiki/Point-to-point_construction

   Section of a typical Australian late 1930s radio, showing the point to point construction between components. In electronics, point-to-point construction is a non-automated technique for constructing circuits which was widely used before the use of printed circuit boards (PCBs) and automated assembly gradually became widespread following their introduction in the 1950s.

6. Chip on board - Wikipedia

   en.wikipedia.org/wiki/Chip_on_board

   The PCB of a quartz watch. The clock IC is under the drop of black epoxy. Chip on board (COB) is a method of circuit board manufacturing in which the integrated circuits (e.g. microprocessors) are attached (wired, bonded directly) to a printed circuit board, and covered by a blob of epoxy. [1]

7. Perfboard - Wikipedia

   en.wikipedia.org/wiki/Perfboard

   Software for PCB layout can often be used to generate perfboard layouts as well. In this case, the designer positions the components so all leads fall on intersections of a 0.1 inches (2.54 mm) grid. In this case, the designer positions the components so all leads fall on intersections of a 0.1 inches (2.54 mm) grid.

8. 5 ways to make your artificial Christmas tree smell like the ...

   www.aol.com/5-ways-artificial-christmas-tree...

   How to make a fake Christmas tree smell real. The tree is up, the lights are strung and the ornaments are hung. Now, let’s add a blast of fragrance to amp up the Christmas spirit in the room ...

9. 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 ...