BASIC ELECTRONICS PROJECT 5- MAKING YOUR OWN REGULATED POWER SUPPLY

Hi…friends I am again here with another basic electronics projects, this time we are here to make our own regulated power supply… We need a regulated supply so many times while working with electronic circuit ,so we must have knowledge about regulated power supply, so that we can make  our own power supply of desired constant voltage whenever needed. Here we will discuss about a simple regulated power supply circuit……. .so lets have a  look…!!

INTRODUCTION

A regulated power supply is an embedded circuit, or stand alone unit, the function of which is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits. The output from the regulated power supply may be alternating or unidirectional, but is nearly always DC.

COMPONENTS  REQUIRED

1.      STEP DOWN TRANSFORMER  (12-0-12 type)

2.      78XX SERIES IC (e.g. 7805,7808,7809…etc as per requirement)

3.      CAPACITORS     (1X 470 uf, 2x .1uf)

4.      DIODES              (4X 1N4001 or 1N4007)

5.      1A FUSE

CIRCUIT  DIAGRAM

Here is the circuit diagram for our regulated power supply

 You can use IC7805 for constant 5v DC supply, IC7808 FOR 8V, IC7809 FOR 9V and so on.

There are four stages in this circuit-

1.TRANSFORMER  to  step down AC supply within the range of around 12 v.

2. A BRIDGE RECTIFIER is used for rectification purpose.

3. in SMOOTHING stage AC ripples are removed by the help of capacitor used.

4. in REGULATOR stage a REGULATOR IC  is used to regulated incoming power supply to a specific value say (5v, 8v ,9v or whatever as per requirement)

So that’s it , with the help of this simple circuit we can make our own regulated power supply for various circuits and operations ,

I hope you guys found this article useful in case of any query,doubt or critical comment just leave a comment……………

THNX………..:)