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

Picture of Glow Led's Using AC Current(220-250V)


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.

Picture of 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.

Picture of Adding Diodes.

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


Step 3: Adding Resistors.

Picture of Adding Resistors.

1st add the 1000 m hm resistor.

Step 4: Adding the LED's.

Picture of 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.

Picture of 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.

Picture of 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..


rvs2018 (author)2017-11-17

Thanks for the clear instructions. II opened a 7-LED lamp and saw a 105K 250V capacitor? and a yellow-violet-yellow-gold resistor (470KOhms, I think). I need to convert this to work with 110-120V input instead of 220-240V. What would I have to change?

SujitG6 (author)2017-09-06

pls inform me the resistance power rating........

mbadusha (author)2017-02-18

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

hrsurya (author)2016-12-26

nice teaching and easy to learn by a learner

hrsurya (author)2016-12-26

Thank you

Adithya shastry (author)2016-11-24

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

prithviR8 (author)2016-11-16

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

minigrt (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.

MusaA11 (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 ?

parthiban.priya.1 (author)2015-01-07

can we do this experiment in bred board ?

agis68 (author)parthiban.priya.12016-05-16

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

iqlogic (author)agis682016-07-02

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

agis68 (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

mbadusha (author)2016-03-17

1000ohm is 1k and 220ohm

Ned Kelly (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

rhendric (author)Ned Kelly2010-09-20

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.

ShrayanB (author)rhendric2015-12-30

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. :)

silence444 (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

punga (author)2015-10-12

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

KoustavD (author)2015-08-17

I want to use thiss for a single led

PablordstribeN (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

Ploopy (author)2015-08-02


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

VinothK6 (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?

rakesh231 (author)VinothK62015-07-08

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.

Mstar360 (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).

rakesh231 (author)Mstar3602015-07-08

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.

partha_roy (author)2014-11-17

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

KHARSANG (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

jone005 (author)2014-07-06

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

Please anyone help me. My E-mail:

jone005 (author)2014-07-06

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

sogseal (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

arnoldoseincman (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.

nvaishnav (author)2013-12-25

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

gollu (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....

despond (author)2013-01-19

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:

pro5200 (author)2012-01-23

Can I use this scheme, for 16 pieces LED?

irfan bangash (author)pro52002012-01-25

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

220v and 240v only

pro5200 (author)irfan bangash2012-01-26

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

sbdash11391 (author)pro52002012-11-21

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

chnaveed.alam (author)2012-07-07

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

chnaveed.alam (author)2012-06-22

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

sahil263 (author)chnaveed.alam2012-06-25

hi there,

read this

chnaveed.alam (author)sahil2632012-06-27

thanks frnd

samalert (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.

seaspac (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.

kushalverma (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.....

sahil263 (author)kushalverma2012-06-25

hello there,

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

irfan bangash (author)2012-02-12

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

i thk its 1/2watt

mkrieg (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;-)

sahil263 (author)mkrieg2011-09-29

Thank's for the suggestion.

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