5V Regulated Power supply circuit 

Need 

You may be aware that a proper power supply is required for any circuit to function to its optimum performance. It is thus indispensable for any electronics circuit to function. There  are varieties of power supply circuits available which makes one to confuse which one can give optimum performance besides longer lasting and economical to apply. 

Starting from half wave rectifier to versatile SMPS are available for an electronics enthusiasts. Especially for digital circuits ordinary power supply system should not be used. Digital circuits using ICs need specialised regulated and constant current power supplies. Considering the cost,performance and suitability one such popular 5V regulated power supply circuit is given here. 

Circuit schematic

A simple and at the same time versatile regulated Power supply giving steady 5V for efficient use of digital circuit is given here. Full wave rectification of AC supply ensures capable of delivering nearly 1A power is utilised. Even after smoothing the DC supply, it has been specifically regulated to 5V DC output with the help of the famous voltage regulator IC 7805. It is a simple 3 pin IC voltage regulator easy to handle and assemble on PCBs.  The full circuit schematic is given for your appreciation and assembling. 

Parts of the circuit

Very few components are used in the circuit. The details of the parts are given below.

U1 – IC 7805 voltage regulator

D1, D2, D3, D4 – 1N4001 rectifier diodes

T1 – 230 v to 8v AC step down power transformer

C1 – 1000 MFD/25V electrolytic capacitor

C2 – 100 MFD/ 16 V electrolytic capacitor 

Features

Easy to build this versatile 5V regulated power supply circuit using voltage regulator IC 7805 

Out put gives fixed 5V regulated power supply. Universally popular for digital circuits

Heat sink may be used for the voltage regulator if the circuit draws more current. The heat sink will minimise the heat produced by the IC. 

Assembling 

Ready made PCB design is given to assemble the circuit. It is note worthy to note that the power supply PCB can be fitted to any gadgets that require regulated 5V power supply. 

Full view of PCB 

Component layout plan

Copper track design 

One can easily assemble this PCB very easily with the help of the circuit.