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- Point-to-point_construction abstract "Point-to-point construction refers to a non-automated method of construction of electronics circuits widely used before the use of printed circuit boards (PCBs) and automated assembly gradually became widespread following their introduction in the 1950s. Circuits using thermionic valves (vacuum tubes) were relatively large, relatively simple (the number of large, hot, expensive devices which needed replacing was minimised), and used large sockets, all of which made the PCB less obviously advantageous than with later complex semiconductor circuits. Point-to-point construction is still used to construct prototype equipment with few or heavy electronic components.Before point-to-point connection, electrical assemblies used screws or wire nuts to hold wires to an insulating wooden or ceramic board. The resulting devices were prone to fail from corroded contacts, or mechanical loosening of the connections. Early premium marine radios, especially from Marconi, sometimes used welded copper in the bus-bar circuits, but this was expensive.Point-to-point wiring is not suitable for automation and is carried out manually, making it both more expensive and more susceptible to wiring errors than PCBs, as connections are determined by the person doing assembly rather than by an etched circuit board. For production, rather than prototyping, errors can be minimised by carefully designed operating procedures.Point-to-point construction uses terminal strips (sometimes called "tag boards") or turret boards. The crucial invention was to apply soldering to electrical assembly. In soldering, an alloy of tin and lead, or later bismuth and tin, is melted and adheres to other, nonmolten metals, such as copper or tinned steel. Solder makes a strong electrical and mechanical connection. Note that if components are arranged on boards with tags or turrets at both ends and wires going to the next components, then the construction is tag or turret construction respectively, as the components are not going from point to point.".
- Point-to-point_construction thumbnail Antique_Radio_Coils.jpg?width=300.
- Point-to-point_construction wikiPageExternalLink wiring_e.html.
- Point-to-point_construction wikiPageExternalLink Cam2DeadBug.jpg.
- Point-to-point_construction wikiPageID "65919".
- Point-to-point_construction wikiPageRevisionID "603569032".
- Point-to-point_construction hasPhotoCollection Point-to-point_construction.
- Point-to-point_construction subject Category:Electronics_manufacturing.
- Point-to-point_construction subject Category:Electronics_substrates.
- Point-to-point_construction comment "Point-to-point construction refers to a non-automated method of construction of electronics circuits widely used before the use of printed circuit boards (PCBs) and automated assembly gradually became widespread following their introduction in the 1950s.".
- Point-to-point_construction label "Costruzione punto a punto".
- Point-to-point_construction label "Point-to-point construction".
- Point-to-point_construction label "Punt-naar-puntconstructie".
- Point-to-point_construction label "Навесной монтаж".
- Point-to-point_construction label "空中配線".
- Point-to-point_construction sameAs Costruzione_punto_a_punto.
- Point-to-point_construction sameAs 空中配線.
- Point-to-point_construction sameAs Punt-naar-puntconstructie.
- Point-to-point_construction sameAs m.0hgh7.
- Point-to-point_construction sameAs Q2626905.
- Point-to-point_construction sameAs Q2626905.
- Point-to-point_construction wasDerivedFrom Point-to-point_construction?oldid=603569032.
- Point-to-point_construction depiction Antique_Radio_Coils.jpg.
- Point-to-point_construction isPrimaryTopicOf Point-to-point_construction.
