# Schematic Diagram Of Power Supply With Explanation

By | December 7, 2021

# Understanding the Schematic Diagram of Power Supply

As a crucial part of any electronic device, the power supply plays an important role in delivering electricity to all other components. To effectively manage this power, a schematic diagram of a power supply is often used to visualize the various parts involved and to provide an easy way to trace power flows. This article will take a closer look at the schematic diagram of a power supply and its different components in detail to help readers better understand how it works.

## What is a Power Supply?

A power supply is a device that provides electrical energy to another device or system. It forms a crucial part of any electronic device as it is responsible for providing electricity to all other components. The power supply typically supplies voltage and current to the device, which can vary in size, wattage, and type depending on the application.

## The Components of a Power Supply

A power supply is made up of several components, each with their own function. These components are usually represented in a schematic diagram, which is a useful visual representation of the various parts involved. The common components of a power supply include the AC adapter, power switch, thermal cut-off, fuse, rectifier, capacitor, resistor, bridge rectifier, voltage regulator, and output circuits.

The AC adapter is responsible for converting AC power from mains to DC power for the rest of the circuit. It takes alternating current (AC) from a wall outlet and converts it into direct current (DC). The AC adapter is also known as the transformer, and it can be identified on a power supply schematic by the pair of coils connected to the main input.

## The Power Switch

The power switch is the first stage in the power supply and is responsible for switching the device on and off. It consists of a mechanical or electronic switch that can open or close the power supply circuit when activated. On the schematic, a power switch is typically represented by an arrow pointing towards the input or output terminals.

## The Thermal Cut-Off

The thermal cut-off is a safety device that prevents overheating of the power supply. When the temperature of the power supply reaches a certain level, the thermal cut-off switch will automatically turn off the power supply to prevent it from being damaged. It can usually be identified on the schematic by two curved lines connecting the AC adapter and output terminals.

## The Fuse

A fuse is a small, thin device that is used to protect the power supply from short circuits. It acts as a break in the circuit and will heat up and melt when too much current flows through it. A fuse is usually represented on the schematic with an "F" followed by a number indicating the amperage of the fuse.

## The Rectifier and Bridge Rectifier

The rectifier is a device that converts AC voltage to DC voltage. The bridge rectifier consists of four diodes, which are semiconductor devices that allow current to flow only in one direction. Both the rectifier and bridge rectifier can be identified on the schematic by the pairs of diagonal lines connecting the power source to the other components.

## The Capacitor

A capacitor is an electronic component that stores energy. It consists of two conducting surfaces separated by an insulator and is used in power supplies to filter out noise and smooth out ripple signals. On the schematic, a capacitor can be identified by the two circles connected by a line.

## The Resistor

A resistor is an electronic component that reduces the flow of current in a circuit. It is used to regulate the voltage and current in a power supply and can be identified on the schematic by a "R" followed by a number indicating the resistance of the resistor.

## The Voltage Regulator

The voltage regulator is a device that regulates the output voltage of the power supply. It is usually represented on the schematic by three pins pointing inwards, with a line connecting the output terminal to the center pin.

## The Output Circuit

The output circuit is responsible for directing the voltage and current from the power supply to the other components of the device. It is typically represented on the schematic with a dashed line connecting the output terminal of the power supply to the other components.

## Conclusion

Understanding a power supply schematic is an essential skill to have when working with electronics. This article has explored the various components of a power supply in detail and discussed how they are represented on a schematic diagram. By learning about the components and their functions, readers should now have a better understanding of how a power supply works.

Circuit Diagram Of Regulated Power Supply With Component Rating Etechnog

Universal Digital Power Supply Circuit Based Projects

Constant 12v Power Supply For Led Circuits Part 4 13

0 30vdc Variable Power Supply Circuit Electronic Schematic Diagram

2v 25v Dc Power Supply Schematic

How To Build A Dc Power Supply

Computer Power Supply Schematic And Operation Theory

What Is The Circuit Diagram Of A 12v Dc Power Supply And Explain Its Functions Quora

Desktop Pc Linear Power Supply Circuit

Desktop Power Supply Detailed Circuit Diagram Available

1 5v Dc Power Supply Circuit

Constant Cur Dc Power Supply Circuit

The Aa8v 6146b Amplifier Power Supply Schematic Diagrams And Circuit Descriptions

Designing Simple Power Supply Circuits Homemade Circuit Projects

Designing Simple Power Supply Circuits Homemade Circuit Projects

Simple Power Supply Circuit Easy To Make Schematic Diagram Under Repository Circuits 23747 Next Gr

5 Pc Power Supply Circuit For You Eleccircuit Com

The W8exi Wingfoot Vfo Exciter Bias Power Supply Schematic Diagram And Circuit Description

Power Supplies Begin The Circuit Foundation Taming Switching Supply Layout

1 0 Linear Dc Power Supply The Importance Of Circuit For Electronic Circuits Made Up Transistors And Or Ics This Source Ppt