How To Make - AC MAINS OPERATED LED LAMP

 

 Learn how to make a AC mains operated LED lamp in minutes!  Download the project report at the end of the post for free.

WHAT’S THE NEED ?

• To make an ECONOMIC LED lamp which has low manufacturing cost or can be made using simple available WASTE and CRAP.
• To save ELECTRICITY
• REDUCE electricity BILLS.

Material Required:

1.    22Ω/1W resistor
2.    1M Ω/0.25W resistor
3.    0.22μF/400V capacitor
4.    Diode – 1N4007
5.    LED bulbs
6.    PCB
7.    AC Mains connecter
8.    Electrical Equipments
9.     Soldering Iron
10.     Soldering Metal
11.     Insulation Tape
12.     Tester

CIRCUIT DIAGRAM

How Circuit Works?

Filter Circuit

Here , the two resistors and a capacitor together form a filter circuit. It drops down the Voltage .

This filter circuit consist of a resistor R1 (22Ω/1W) connected in series with a parallel circuit of resistor R2 (1MΩ/0.25W) and capacitor C1 (0.22μF/400V). This circuit drops down the high voltage to a low voltage. So, for filtering the AC High voltage a series connection of Resistor and RC circuit is used.

Bridge Rectifier Circuit

This rectifier circuit rectifies the AC into DC and hence acts as full wave rectifier. For making the rectifier circuit 4 – 1N4007 diodes are used. While connecting the diodes one main thing which is to be kept in mind is that , the side having gray side is cathode (negative).




The Load
Load in this circuit is the 25 LEDs connected in series with each other and connected with the bridge rectifier circuit. The Load strip completes the circuit. 

CIRCUIT SIMULATED USING MULITISIM

Before Simulation Using Multisim 

After Simulation Using Multisim 

How AC mains operated LED lamp can be used?

• Use the same technique and circuit next time for decorative lighting process during DIWALI and other festivals.
• Use it for decorating your room and other places

Precautionary Note :
WORKING WITH AC MAINS MIGHT BE DANGEROUS. KEEP IN MIND THE LAWS OF INSULATION AND WORK CAREFULLY ON 230V POWER SUPPLY.


Sources Used for research:

1. Electronics for you(Magazine)
2. www.instructables.com ( website & android app)

Download complete project report  and Multisim circuit file - CLICK HERE 



Shoot your doubts, suggestions and/or any comments in the comment box below!