STAVOLT

Stavolt, atau lebih sering disebut stabilizer, sesuai dengan namanya, tentunya utntuk menstabilkan tegangan listrik jaringan apakah 1 phasa 220 Vac, atau 3 phasa 380 Vac, ada dua jenis yaitu statis dan dinamis.

kalau statis dipakai step trafo yang memiliki hanya beberapa tap out put trafo, dan dihubungkan ke beberapa relay misalnya 5 tap,relay tersebut diatur oleh kontroler yang akan merasakan tegangan sumber, bila memakai sistem ini maka tegangan keluaran masih ada sedikit selisih dengan target 220 Vac. biasanya hanya terdengar suara klik .. klik saat relay aktif. kalau dinamis memakai servo motor, kontroler mengatur posisi servo motor pada posisi yang tepat pada tegangan 220 Vac, sehingga disini tidak memakai trafo tap lagi melainkan memakai auto trafo yang tapnya dapat digeser oleh servo motor tadi. disini tegangan output akan selalu stabil pada posisi 220 Vac, dan biasanya akan terdengar suara seerrr bila motor servonya bergeser.

Sumber: http://erwindoni.blogdetik.com
Nama  : Priyo Hadi Wardoyo
No Absens: 17
Kelas   :9A

LCD MONITOR

A liquid crystal display (LCD) is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly.
LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images which can be displayed or hidden, such as preset words, digits, and 7-segment displays as in a digital clock. They use the same basic technology, except that arbitrary images are made up of a large number of small pixels, while other displays have larger elements.

Plotter Printer

PLOTTER PRINTER

Pen plotters print by moving a pen or other instrument across the surface of a piece of paper. This means that plotters are restricted to line art, rather than raster graphics as with other printers. Pen plotters can draw complex line art, including text, but do so slowly because of the mechanical movement of the pens. They are often incapable of efficiently creating a solid region of color, but can hatch an area by drawing a number of close, regular lines.
Plotters offered the fastest way to efficiently produce very large drawings or color high-resolution vector-based artwork when computer memory was very expensive and processor power was very limited, and other types of printers had limited graphic output capabilities.
Pen plotters have essentially become obsolete, and have been replaced by large-format inkjet printers and LED toner based printers. Such devices may still understand vector languages originally designed for plotter use, because in many uses, they offer a more efficient alternative to raster data.


Sumber    : http://en.wikipedia.org/wiki/Plotter
 Nama     : Decky Anugrah Pratama Putra
No          : 8
 Kelas     : 9A