Introduction: Glow Led's Using AC Current(220-250V)

Note :- THIS INSTRUTABLE SHOULD NOT BE ATTEMPTED UNLESS YOU ARE 
FAMILIAR WITH THE RISKS OF WORKING WITH MAINS VOLTAGE



To make this project you will need only few components.
And you could make your own led lamp or decorating light and many more things that you can imagine. This project is just an example to how to build the circuit for glowing led's using 220-250v.

Step 1: Components Required.

>Led's (number as ur choice)
> 4007 Diode (4).
> 250v Polyfilm Capacitor (1) .
> 50v (100 uf) Capacitor (1).
> 1000 m ohm Resistor (1).
> 0.220 k ohm Resistor { should be big in size else the curcit would not work }  (1). or something near this value. 

Step 2: Adding Diodes.

Place the diodes on the PCB board as shown in the picture.
and follow the image instructions.

 

Step 3: Adding Resistors.

1st add the 1000 m hm resistor.

Step 4: Adding the LED's.



I added up only 3 leds. You could add more leds as your requirment.
The current flow would be automaticly divided or multiply itself as required. 

Step 5: Testing.

The circut is ready to use.

Just plug the wires in the socket and the led's will turn on.

as in the images below.

You can use this example and make more creative things..

Step 6: Implementation.

Using this circuit i created.

>Led Lamp.
>Led Decorative Lights.

You could construct something else using this circuit.
Use Your Brains and start working on it..

Comments

author
mbadusha made it!(author)2017-02-18

capacitor code ????? 1000 m ohm???

author
hrsurya made it!(author)2016-12-26

nice teaching and easy to learn by a learner

author
hrsurya made it!(author)2016-12-26

Thank you

author
Adithya+shastry made it!(author)2016-11-24

Can I connect 10 leds using same circuit?....

author
prithviR8 made it!(author)2016-11-16

how to 50 led's in serial connection pls give me circuit

author
minigrt made it!(author)2016-11-08

Thats not a 1000m ohm resistor... Thats 1mega ohm resistor...

And capacitors cant be determined by only volt.. u need to mention the value.. I think its 474k 250volt capacitor.

author
MusaA11 made it!(author)2016-09-19

how can i light up about 100 of this little leds with 220v and how to calculate the value of the resistors and capacitors ?

author
parthiban.priya.1 made it!(author)2015-01-07

can we do this experiment in bred board ?

author
agis68 made it!(author)2016-05-16

no in anyway! You will destroly burn the pins.....breadboard is usefull for DC low voltage, up to 12V current.

author
iqlogic made it!(author)2016-07-02

12V current? Hmmm, interesting :) Nothing will be destroyed I tried that already.

author
agis68 made it!(author)2016-05-16

The circuit is good up to 3 leds. More night lamps uses this circuit. Usually the circuit fails cause of the polyfilm capacitors have no tolerance to up and downs of incoming 250 ΑC current so please be adviced to check and replace the capacitor and the parralel resistor (R1) if the capacitor fails

author
mbadusha made it!(author)2016-03-17

1000ohm is 1k and 220ohm

author
Ned+Kelly made it!(author)2010-01-06

Hi your resistor values are 220 ohms   Ie red red brown and the other is a  1 megohm Brown black green , Go for it young un  good trying from an old 80 year old technichian

author
rhendric made it!(author)2010-09-20

Actually, if you look closely, there is a grey band between the two reds, and a gold one after the silver band. however, he is still off, I believe.

author
ShrayanB made it!(author)2015-12-30

Dear Sahil, I was unable to construct this project since you have not mentioned the value of the polyflim capacitor. I have searched and prefer you to use 450v ( 0.47 Microfrad capaciter).

Thanks. :)

author
silence444 made it!(author)2015-12-23

Thank you for this, I would like to know if one can use it to power a 20m Rope LED Xmas light? The original Power supply burnt. It would seem that the output of the Circuit was around 200V and the StripLight says 250w on the box. I have tried a rectifying diode to a 330uF 450V capacitor but the one wire on the diode burnt right threw. What am I missing? Thank you very much

author
punga made it!(author)2015-10-12

Sir can u upload the videos of construction for this project and send it to my email pungathapa@gmail.com with little modification like to glow more than 30 led blub

author
KoustavD made it!(author)2015-08-17

I want to use thiss for a single led

author
PablordstribeN made it!(author)2015-08-13

the circuit you show, is it ok for 20 led i want to put on this? what are those changes? thnx

author
Ploopy made it!(author)2015-08-02

Cool!

I found the same circuit when I opened a old nightlight...

author
VinothK6 made it!(author)2015-03-16

Dear sir,

How much i can drive using this circuit,i had a plan to connect 1w led(300ma),how much i can connect with this concept?

author
rakesh231 made it!(author)2015-07-08

474k capacitance(0.47uF) in series of bridge rectifier and led gives nearly 27mA current. If you make a good circuit then you need 475k capacitor which can give nearly 270mA current and adding a capacitor of 474k in parallel with 475k capacitor can give nearly 297mA. Be aware of high voltage risk.

author
Mstar360 made it!(author)2015-06-11

Hey man!! Thanks for putting up this circuit. I had a few questions in mind.

First of all, Why do we have to use that 250v capacitor along with the resistor cause the bridge rectifier will itself capable of providing a continuous supply. So why do we need that part. Plz let me know if its for some other purpose.

Secondly, What power of resistance should be used ? . The size of resistance varies with its power dissipation.

Lastly, can you tell me the current output from the bridge rectifier circuit.?

Actually i tried to make an arrangement to lightup 100 (10 mm) LED's from direct 220v supply . I used a bridge rectifier along with a 2 watt resistance. The LED's glowed but due to heat the resistor burnt. can you tell me any solution for the this arrangement.( just 4 diodes and 1 resistor).

author
rakesh231 made it!(author)2015-07-08

1). Resistance is use to limit inrush current during transient

2). Power of resistance being used is all depend on the current through the resistance.

3). you have not specified the value of resistance!!!. So I can't tell any thing on this matter.

author
partha_roy made it!(author)2014-11-17

hello sir, can i use only 1 watt led in this circuit.

author
KHARSANG made it!(author)2014-11-06

To start with, its a good circuit but without isolation from the mains. What if I add an isolation transformer with the same output as the input voltage just before the rectifier? Will that make the circuit any safer? I am attaching a modified circuit to clarify my question. Thanks

Untitled-1.jpg
author
jone005 made it!(author)2014-07-06

How to 300 picces 3V led connect To AC current (220-250V)

Please anyone help me. My E-mail: jone005@gmail.com

author
jone005 made it!(author)2014-07-06

How to 300 picces 3V led connect To AC current (220-250V)

author
sogseal made it!(author)2014-04-15

This is a perfect project for me! my buddy gave me his oscilloscope, and i havent used it yet, so its a win win for me ! Thanks bud

author
arnoldoseincman made it!(author)2014-02-12

Hi Sahil, with all respect, why using full rectifying? You use more components and series resistor dissipates 4 times the energy (heating).

An half wave rectifying (just one diode) would do the same job with less components and dissipating 1/4 of the energy !!!

Best regards, Arnoldo.

author
nvaishnav made it!(author)2013-12-25

Kindly note R1= 1M ohm ( or 1000 k ohm ) and not 1000 M ohm!

author
gollu made it!(author)2013-03-10

sir, i need 2 connect 5 different colour 3v leds in series. it should glow like flickering iam gng 2 use for decrotive purpose..plz gve a example circuit as soon as possible....

author
despond made it!(author)2013-01-19

*IMPORTANT*
The comments here are full of dangerous errors and confusion.
An AC mains mistake can *KILL* you or someone else.

Read this page, which explains the theory properly:

http://www.marcspages.co.uk/tech/6103.htm

author
pro5200 made it!(author)2012-01-23

Can I use this scheme, for 16 pieces LED?

author
irfan+bangash made it!(author)2012-01-25

u used only 2k2 1w Resistor (6) and Diode 4007 (4)
25LED

220v and 240v only

author
pro5200 made it!(author)2012-01-26

OK, i don't know how much value farad the polyfilm capasitor ?

author
sbdash11391 made it!(author)2012-11-21

google the 474j...part written on it and you should get a value

author
chnaveed.alam made it!(author)2012-07-07

how to calculate wattage of a resistor
e.g 200 ohm 1/2 watt etc what is it's formula

author
chnaveed.alam made it!(author)2012-06-22

hello there
does diode used as bridge can u tell me what is its purpose

author
sahil263 made it!(author)2012-06-25

hi there,

read this

http://en.wikipedia.org/wiki/Bridge_rectifier

author
chnaveed.alam made it!(author)2012-06-27

thanks frnd

author
samalert made it!(author)2012-06-26

Very Glad !!!! that u made such a wonderful thing. I was searching for this since i didn't want an adapter hanging from above over ceiling, this will help me a lot.... but i have some doubts.
1> output is 50v - so parallel connection not possible since single LED will carry only 3v [ now since 50 v if i try to connect 16 LEDs in series it shud suffice isnt it 3x16 = 48v] then why in some comments below it is 25 - 30 LED ?
2> if i want to decrease the voltage from 50v to like 12v or less what can be altered and to what amout (since am not into electronics and have least knowledge with not even the basic knowledge of multimeter) if you can suggest the amount and which part i would be glad
3> in your picture above i have seen you have just used 3 leds hw are those able to handle 50v o/p.
4> Now as u specified that circuitry gets a little hot now till how much time can this be left ON.

Tnx a ton for lending time and responding .
This prj is one of my favourite.

author
seaspac made it!(author)2012-06-25

Dear Sahil I think you dont know any thing about the circuit, and in many questions you have been misleading the people. I can see the values of the resistors from the color codes in the photos those are R1=1 Mega ohm - 1/4 Watt and R2= 220 Ohm 1 watt. while you said in a post that resistor R1 is 1000 Milli Ohm, and the big resistor is 0.218 Killo Ohm.

I will repeat the parts list agin for clearity R1 = 1 Mega Ohm 1/4 Watt, R2 = 220 Ohm 1 Watt, Capacitor in parrallel to R1= 0.47 Microfarad 450V, Diodes = 1N4007, Capacitor after the bridge is 100 Microfarad 50V.

Its a nice circuit but lot of confusion from your side about it.

author
kushalverma made it!(author)2011-08-25

i'm not getting a resistor of value 0.218/0.220 excluding this i've got everything now what should i do plz rply me fast as u can.....
KUSHAL

author
sahil263 made it!(author)2012-06-25

hello there,

The resistors are mandatory for this Project.
You Cannot Build the project without the Resistors.

author
irfan+bangash made it!(author)2012-02-12

0.220 k ohm Resistor is 1/2watt or 1/4 ?

i thk its 1/2watt

author
mkrieg made it!(author)2011-09-28

How nice to bring to light these LEDs!
This is music to my electronics - ears.
If you fear the risk of an electric shock, my advice is to simply use ready LED lights!
Here at home I for example use led spots from LEDoptix;-)

author
sahil263 made it!(author)2011-09-29

Thank's for the suggestion.

author
btmnet made it!(author)2011-09-28

Hi, can i use different led like red colour and blue colour?

author
sahil263 made it!(author)2011-09-29

Hi,
Ya sure you can use red and blue led's.

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