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Q.What is a rectifier? With the help of a neat circuit diagram explain the working of a null wave rectifier.

Maharashtra MsbshseMaharashtra HSC (MSBSHSE) Board 2020Subjective· 4mImportance★★★★★
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Figure — Stem asks to explain 'with the help of a neat circuit diagram' the working of a (full/'null') wave rectifier;
Figure — Stem asks to explain 'with the help of a neat circuit diagram' the working of a (full/'null') wave rectifier;

Full-wave rectifier: two diodes conduct on alternate half-cycles via a centre-tapped secondary, giving unidirectional output for the complete input cycle.

Rectifier: an electronic device/circuit that converts alternating current (AC) into (pulsating) direct current (DC), utilising the one-way conduction property of a p-n junction diode.

Full-wave (centre-tap) rectifier: The secondary of the transformer is centre-tapped, giving two equal voltages 180°180° out of phase with respect to the centre tap, each connected to a diode (D1D_1, D2D_2). Both diode cathodes are joined and connected through the load resistor RLR_L back to the centre tap.

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