Electrical Engineering ⇒ Topic : Rectifiers
AC power can be produced easily in bulk form through different methods, but generally for many power control circuits and other industrial applications, DC power is very much required. Hence, AC power necessarily has to be converted into DC power by means of electronic rectifiers which are simpler, cheaper and highly efficient as compared to rotary converters or motor generators. The rectifier which converts AC voltages and currents into DC voltages and currents, produces the output which is pulsating in nature. It consists of DC components and the unwanted ripple components which can be removed by using filter circuit. The output DC thus obtained will be steady DC voltage and magnitude of DC voltage can be varied by the variation of AC voltage magnitude or the value of local current.
Rectifiers are grouped into two categories depending on the period of condition.
(1) Half-wave rectifiers
A half-wave rectifier converts AC voltage into a pulsating voltage using only one half-cycle of the applied AC voltage. The rectifying diode conducts during one half-cycle only.
(2) Full-wave rectifiers
A full-wave rectifier is one which converts AC voltage into a pulsating voltage using both the half-cycles of the applied voltage. It typically uses two diodes, one of which conducts and provides output during one half-cycle (i.e., positive/negative) and other diode conducts during the other half-cycle (i.e., negative/positive).
!! OOPS Login [Click here] is required for more results / answer