liquid-crystal display or lcd is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures. they are usually made of glass but they can also be made out of plastic using olcd. some manufacturers make transparent lcd panels and special sequential color segment lcds that have higher than usual refresh rates and an rgb backlight.
terminology. although much of the electrician's field terminology matches that of the electrical codes, usages can vary: . neutral wire is the return conductor of a circuit; in building wiring systems, the neutral wire is connected to earth ground at only one point. north american standards state that the neutral is neither switched nor fused except in very narrowly defined circumstances.
the practice of conserving an unstable painting on panel by transferring it from its original decayed, worm-eaten, cracked, or distorted wood support to canvas or a new panel has been practised since the 18th century. it has now been largely superseded by improved methods of wood conservation. the practice evolved in naples and cremona in 1711–25 and reached france by the middle of the 18th .
alternately, the panels may, if assembled to an appropriate framework, substitute for having any other kind of wall at all. holes may be cut or drilled into a wall panel to accommodate electrical outlets and other devices coming out of the wall. there is a new type of eco friendly 3d wall panel made out of the fibrous residue of sugarcane. this .
a mullion is a vertical element that forms a division between units of a window or screen, or is used decoratively. when dividing adjacent window units its primary purpose is a rigid support to the glazing of the window. its secondary purpose is to provide structural support to an arch or lintel above the window opening. horizontal elements separating the head of a door from a window above are .
corrugated box design is the process of matching design factors for corrugated fiberboard boxes with the functional physical, processing and end-use requirements. packaging engineers work to meet the performance requirements of a box while controlling total costs throughout the system.. in addition to the structural design discussed in this article, printed bar codes, labels, and graphic .
pony wall or dwarf wall is a general term for short walls, such as: a half wall that only extends partway from floor to ceiling, without supporting anything; a stem wall—a concrete wall that extends from the foundation slab to the cripple wall or floor joists; a cripple wall—a framed wall from the stem wall or foundation slab to the floor joists
operation. a generator interlock kit is installed on the front cover of the home's breaker panel. it consists of two sliding steel or plastic depending on the brand plates held together by three bolts. when moved down, the plate blocks the generator backfeed circuit breaker and allows the main breaker to remain on; when moved up,.
precast concrete sandwich wall or insulated double-wall panels origin. the precast concrete double-wall panel has been in use in europe for decades. the original double-wall design consisted of two wythes of reinforced concrete separated by an interior void, held together with embedded steel trusses. with recent concerns about energy use, it .
gender. powerlock connectors are designated as source or drain. the source connectors are intended to have their permanent connection at the supply of electrical energy such as a connection to the electrical grid or an emergency generator , and the drain connectors are intended to have their permanent connection at the equipment receiving power.
teck cable may be used to power hot tubs, garages or other outbuildings, and sub-panels in the residential setting. construction edit teck cable is composed of copper conductors sheathed in cross-linked polyethylene , bundled by plasticized pvc , wrapped in interlocking aluminum armour, all sealed by another coat of pvc.
unlike girder and panel, the bridge and turnpike sets featured roadway sections instead of curtain wall panels. the next set in the series, 7, was the combined girder and panel, bridge and turnpike set, which provided all the parts from the earlier girder and panel sets and bridge and turnpike sets.
powerlock is a range of single-pole electrical connectors used for temporary high-current, low-voltage up to 1000 v ac applications, similar to but considered safer than camlock connectors. originally developed by litton veam in the mid-1990s, veam powerlock is now a brand of itt cannon.compatible versions are also available from other manufacturers.
insulating concrete form or insulated concrete form icf is a system of formwork for reinforced concrete usually made with a rigid thermal insulation that stays in place as a permanent interior and exterior substrate for walls, floors, and roofs. the forms are interlocking modular units that are dry-stacked without mortar and filled with .