DỊch av chuyÊn nghÀnh - hepl me

[daithanhxk]

Hệ thống quảng cáo SangNhuong.com

dịch giùm em mấy đoạn av chuyên nghanh nha mấy a (c).

INVERTER
an inverter is an electrical device that converts direct curren (DC) to alternating current (AC) ; the converted AC can be at any required coltage and frequency with the use of appropriate transformers, swiching , and control circuits, solid-state inverters have no moving part and are used in a wide range of applications, from small switching power supplies in computer, to large electric utility high-voltage direct current applications that transport bulk power, inverters are commonly used to supply Ac power from DC sources such as solar panels or batteries.


RECTIFIER

a rectifier is an electrical device that converts alternating curren (AC), which periodically reverses direction, to direct current DC , which flows in only one direction. the process is known as rectification, physically, rectifiers take a number of forms, including vacuun tube diodes, mercury-arc valves , solid- state diodes, even synchronous electromechanical seitches and fine wire pressing on a crystal of galena ( lead sulfide) to serve as a point- contact rectifier or " crystal detector"
rectifiers have many uses , but are often found serving as components of dc power supplies and high-voltage direct current power tranmission systems. rectification may serve in roles signals serve as rectifiers. in gas heating systems flame rectification is used to detect presence of flame

the simple process of rectification produces a type of dc characterized by pulsating voltages and currents (although still unidirectional). depending upon the type of end-use , this type of dc current may then be further modified into the type of relatively constant voltage dc characteristically produced by such sources as batteries as batteries and solar cells.
a device which performs the opposite function ( converting dc to ac) is known as an inverter.

sắp thỉ rồi nên mong mấy anh chị dịch hộ em cái ha!
e không giỏi nên không ghép từ được à!