Basic DC Power Supply

Introduction to DC Power Supply:

The dc power supply converts the standard 230 V, 50 Hz , ac signal available at wall outlets into a constant dc voltage.  The dc voltage produced by a power supply is used to power all types of electronics circuits, such as television receivers, stereo systems, VCRs, CD players and most laboratory equipments.

 Basic block diagrams for a rectifier and complete power supply are shown in diagram below. The rectifier can be either a half-wave rectifier or a full-wave rectifier.  The rectifier is the main component of DC power supply.  It converts the ac input voltage to a pulsating dc voltage, which is half-wave rectified as shown in diagram.  The filter element of supply eliminates the fluctuations in the rectified voltage and produces a relatively smooth dc voltage.  The regulator is a circuit that maintains a constant dc voltage for variations in the input line voltage or in the load.  Regulator vary from a single device to more complex integrated circuits.  The load is a circuit or device for which the DC power supply

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AC Input 230 v , Rectified Output and Basic Rectifier

Block Diagram of DC Power Supply:

 

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Block Diagram of DC Power Supply

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