Home >>

How to Make an Efficient LED Emergency Light Circuit - Diagram Added
Published By Swagatam on 2011-09-05 792 Views


A very simple emergency light circuit using LEDs can be built at home using some very ordinary electronic parts. The circuit explained here can be plugged into your domestic mains AC socket. As long as power is present, the circuit keeps the LEDs switched OFF, but the moment AC mains disrupts, the circuits immediately switches into action and illuminated the connected LEDs. Let’s learn how to make a simple LED emergency light circuit.


A very simple emergency light circuit using LEDs can be built at home using some very ordinary electronic parts. The circuit explained here can be plugged into your domestic mains AC socket. As long as power is present, the circuit keeps the LEDs switched OFF, but the moment AC mains disrupts, the circuits immediately switches into action and illuminated the connected LEDs. Let’s learn how to make a simple LED emergency light circuit.

Referring to the diagram, you will need the following basic parts for the assembly of the above circuit:

Resistors:
100 Ohms – 1 no.
1m – 1no.
10K – 1no.
22 Ohms – 24 no.

Capacitors

105/400V – 1no.
100 uF/ 25V,

Zener – 9 volts 1watt,

Diodes – 1N4007,

Transistor – BD 140,

Battery – 6 Volt, 4 AH, SUNCA

Veroboard cut according to the size.

LED – High efficiency white, 5mm – 24 no.

The assembly is done as explained below:

First, solder all the LEDs over the veroboard such that they all are oriented perfectly in rows and columns as desired by you. Spread them so that they can be wired up easily as per the given circuit diagram.

Next, solder the transistor and the other associated parts over the veroboard with the aid of the circuit diagram, correctly.

Finally, connect a fully charged battery to the circuit, the LEDs should illuminate instantly, however the moment you plug the circuit into AC mains the LEDs shut OFF and the battery starts trickle charging.


 

Post Comment Comments (0) Report This



More Articles Specially Recommended for You:

How to Make a Simple Sine Wave Inverter

Inverters are power generating devices that are able to convert DC battery potential to mains equivalent AC. These are personal power generators

Written By : Swagatam
How to Make a Potato Battery Through Easy Steps

Children with technical knacks will just love this simple potato battery project. It's about making an electricity genetator from a potato o

Written By : Swagatam
How to Build an Automatic Highly Accurate Mains Operated Voltage Stabilizer

A very useful automatic mains operated voltage stabilizer circuit design is discussed here. The circuit is basically built around accurate opamp

Written By : Swagatam
Simple NI-CAD Battery Charger Circuit You Can Build And Use

The 555 timer here perfectly suits the function and the heart of an automatic battery charger, the circuit is particularly helps to maintain a f

Written By : Swagatam
Circuit for Charging a Cell Phone From an External 12V Automobile Battery During Emergency

Generally we have seen cell phone chargers in the form of small mains operated plug-in type adapters normally used in homes for charging a cell

Written By : Swagatam
Urban Exploration: trespassing or adventure - the stuff you really should know before you urbex

What is Urban Exploration? Urban Exploration or 'Urbexing' is, put simply, an interest in deserted, abandoned and derelict

Written By :10prestoncourt
Sourcing Raffle Prizes and Auction Lots

Holding a raffle or auction is a great way to raise funds for your cause. However, you need to go about it in the right way. Who t

Written By :10prestoncourt
Event Publicity tried and tested ways to reach the right audience

You don't need to spend lots of money to publicize your event, you just need to follow some tried and tested methods. Establish

Written By :10prestoncourt
How to create eye-catching event flyers

In a world where we are bombarded with information everywhere we go, it is very easy to overlook a neatly typed up event poster. 

Written By :10prestoncourt
Howtoee Review

Howtoee is a new revenue sharing site. It currently pays $5 per article and gives 100% revenue from Google Adsense. The site looks clean but I a

Written By :11tatic

COMMENTS



LogIn or SignUp! now to post your comments for this article.