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Τι (ποιος) είναι turret$85812$ - ορισμός

EARLY ATTEMPT AT MAKING ELECTRONIC CIRCUITS THAT WERE RELATIVELY RUGGED, PRODUCIBLE, AND SERVICEABLE IN THE DAYS BEFORE THE PRINTED CIRCUIT BOARD
Turret Board; Turret (electronics)
  • Nearly empty turret board
  • Turret board installed in chassis
  • Turret board with a few components

Gun turret         
  • Animation showing gun turret operation of the Stark I turret of the British [[BL 15 inch /42 naval gun]]. Compare the layout and nomenclature with the US design below.
  • B-17]]'s Bendix chin turret, remotely controlled by the bombardier
  • vignette]] ''In the Turret'' (engraved before 1863).
  • The [[Boulton & Paul Overstrand]] biplane was the first RAF bomber to carry an enclosed turret
  • One of the FDSL 131 remote gun turrets of a [[Messerschmitt Me 210]] being maintained, with cover removed.
  • ''Bismarck''{{'}}s secondary battery 15 cm gun turret
  • The commander's cupola of a [[Conqueror tank]] with a machine gun
  • HMS ''Thunderer'', right elevation and plan from [[Brassey's Naval Annual]], 1888
  • US Army tank troops with [[Renault FT]]s on the Western Front, 1918. The FT was the first operational tank to carry a turret.
  • BB-62}} in the background
  • Cowper Coles']] proposed cupola ship, 1860.
  • HMS ''Dreadnought'']] had a main battery 12 inch wing turret on either beam
  • 6}}.
  • HMS ''Prince Albert'']], a pioneering turret ship, whose turrets were designed by [[Cowper Phipps Coles]]
  • HMS ''Captain'']] was one of the first ocean-going turret ships
  • Cutaway illustration of a US [[16"/50 caliber Mark 7 gun]] turret
  • 6}} with two main gun turrets on centreline and four secondary on the sides
  • A Martin YB-10 service test bomber with the USAAC - the first flight of the B-10 design occurred in mid-February 1932
  • A B-24 Liberator rear turret
  • 6}} four-gun turret
  • The [[Rolls-Royce Armoured Car]] with its new open-topped turret, 1940.
  • Diagram of the  battlecruiser ''Von der Tann'', Brassey's ''Naval Annual'' 1913, showing wing turrets amidships
  • Monitor}}
  • 6}}
  • USS ''Monitor'']]
PROTECTIVE WEAPON MOUNT OR FIRING POSITION
Gun turrets; Wing turret; Wing turrets; Gun Turret; Gunhouse; Turret ring; Weapon turret; Cupola (military); Ammunition hoist; Aircraft gun turret; Training (gunnery)
A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanism of a projectile-firing weapon and at the same time lets the weapon be aimed and fired in some degree of azimuth and elevation (cone of fire).
Rose turret         
  • Rear view of the Rose turret at RAF Museum London showing the design's two M2 Browning heavy machine guns
GUN TURRET
Rose-Rice turret
The Rose turret (sometimes known as the Rose-Rice turret) was a gun turret fit to the rear position of some British Avro Lancaster heavy bombers in 1944–45. It was armed with two American light-barrel Browning .
Turret clock         
CLOCK THAT IS LARGER THAN A DOMESTIC CLOCK AND HAS A MECHANISM DESIGNED TO DRIVE A VISUAL TIME INDICATOR SUCH AS DIALS AND OR BELLS AS A PUBLIC AMENITY
Turret Clock; Turret clocks; Mercury clock
A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as churches, university buildings, and town halls. As a public amenity to enable the community to tell the time, it has a large face visible from far away, and often a striking mechanism which rings bells upon the hours.

Βικιπαίδεια

Turret board

In electronics, turret boards were an early attempt at making circuits that were relatively rugged, producible, and serviceable in the days before printed circuit boards (PCBs). As this method was somewhat more expensive than conventional "point-to-point" wiring techniques, it was generally found in the more expensive components, such as professional, commercial, and military audio and test equipment. This is similar to cordwood construction.

Turret boards consist of a thin (generally 1/8 inch) piece of insulating material drilled in pattern to match the electronic layout of a set of components. Each hole drilled will have a metal post (the turret) positioned in it. Electronic components are suspended between these turrets and soldered to them to create a complete circuit layout.

Most of the military electronics used in WWII made use of this construction method, and Altec professional gear of similar vintage has the same construction. However, the underside of some turret boards, such as a consumer Zenith 1A10 console radio, circa 1940, consists of an array of electronics components that are simply suspended, rather than tethered or soldered down, and thus could move unexpectedly. Such construction methods tended to keep the neighborhood radio repairman in work. In general, however, the use of turrets and turret boards dramatically improved reliability and serviceability.

Turret boards additionally allowed some degree of "engineered" construction. That is, an engineer could design a turret board with listed component interconnects such that it could be assembled by someone skilled in component recognition and soldering. A schematic was unnecessary for assembly.

Until reliable high-temperature printed circuit boards were developed, turret board construction was considered the best available technology. Currently, the use of turret boards is limited to hand-wired vacuum tube electronics (be it commercial or hobby), often as an attempt to replicate a classic design or design approach. Popular DIY components utilizing this approach include reproduction vintage guitar amplifiers and certain professional studio components from the 1960s, such as the classic and still widely used Teletronix LA2A tube compressor. In general, however, due to the expense and time-consuming nature of turret board construction methods, experimental or test-stage electronics projects generally make use of one of the many types of perfboard available, while final circuits—both hobby and commercial—utilize printed circuit boards.