Question

What is \( p\text{-}n \) junction rectifier? Draw circuit diagram of (i) half-wave rectifier (HWR) and (ii) full-wave rectifier (FWR). (i) Half-Wave Rectifier (HWR)

Hint:

A half-wave rectifier uses one diode, while a full-wave rectifier uses two or four diodes for continuous current flow.

Answer 1

Step 1: In a half-wave rectifier, a single diode is used to allow the flow of current only during the positive half of the AC input. Step 2: During the negative half-cycle, the diode blocks the current flow. \[ \boxed{\text{HWR allows current in one half-cycle.}} \] (ii) Full-Wave Rectifier (FWR) % Solution Solution: Step 1: A full-wave rectifier uses two diodes (center-tap transformer) or four diodes (bridge rectifier) to allow current in both positive and negative cycles. Step 2: This results in a pulsating DC output. \[ \boxed{\text{FWR allows current in both half-cycles.}} \]