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About This Instructable

Posted:Aug 6, 2012

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Energy saver (/tag/type-id/category-

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Energy saver CFL modif ication w ith LED (/tag/type-

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DANGER HIGH VOLTAGE

I am using this idea since last six months, it just came in my mind (why not

experiment).

You need the circuit of an energy saver bulb whose tube is burnt or damaged.

This is a high voltage and high frequency generating circuit, be careful there is

high voltage present if you connect it to AC line. There is a high voltage input

capacitor (from 2.2uf to 10uf 400 volts). The idea is to put a bridge rectifier on the

output on this circuit and use for LEDs.

A 23 to 25 watt energy saver’s output can produce 165 mA current (it is written on

it) for the energy saver light bulb. We need to use this constant current output for

our LED lights. By using bridge rectifier (ultra fast) you can get 100 volts of DC. A

high frequency switching output cannot be rectified properly by using normal

bridge rectifier like 1N4007 or similar. We need an ultrafast diode to make a bridge

rectifier like UF4007,BYV26 or similar.

Step 1: Open energy saver bulb and remove its tube

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(http://cdn.instructables.com/FDX/LEHG/H5ECN4O8/FDXLEHGH5ECN4O8.LARGE.jpg)

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CFL Improvement (/tag/type-id/category-

technology/keyw ord-cfl improvement/)

improve CFL light (/tag/type-id/category-

technology/keyw ord-improve cfl light/)

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How to use burnt

Compact Florescent Light

Circuit Module (/id/How-

to-use-burnt-Compact-

Florescent-Light-Circuit-/)LED Emergency light

(/id/LED-Emergency-light/)

by mahadevrm

(/member/mahadevrm/)

Make a CLL (Compact LED

Lamp) from a dead

CFL(Compact Fluorescent

Lamp) (/id/Make-a-CLL-

from-a-dead-CFL/)Take apart a Compact

Fluorescent Bulb

(/id/Take-apart-a-

Compact-Fluorescent-

Bulb/)mains operated 25nos.

led Lamp (/id/mains-

operated-led-Lamp/)

by patrickvaz

(/member/patrickvaz/)

Open energy saver bulb and carefully remove its burnt tube from the top. Be

careful its glass tube.

Step 2: Filament connections

Identify filament connections and joining capacitor.

See where filaments of the energy saver bulbs are connected.

(http://cdn.instructables.com/FBO/MLL5/H5ECN4MP/FBOMLL5H5ECN4MP.LARGE.jpg)

(http://cdn.instructables.com/F6T/DYB0/H5IRUQHL/F6TDYB0H5IRUQHL.LARGE.jpg)

Step 3: Short the filament points

Short the filament points using soldering iron

Short filament 1 connections together

Short filament 2 connections together

Remove filament joining capacitor

Step 4: Bridge rectifier

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Make bridge rectifier and add capacitor on the output

You need a ultra fast switching diode uf4007 or similar and 0.1uf 400v capacitor

Step 5: Add BR on the circuit board

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Using energy saver light circuit for LEDs (An improved energy saverlight hacked from CFL circuit) by ramizsattar (/member/ramizsattar/)

(/contest/elementalled/)

+ Collection I Made it!

Download (/id/Using-energy-saver-light-circuit-for-LEDs/?download=pdf)

Favorite

Intro 1 2 3 4 5 6 7 8 9 10

(/id/Using-energy-saver-light-circuit-for-LEDs/) 10 Steps

Now solder the bridge rectifier to the circuit board from where you have removed

the filament joining capacitor

Step 6: Connection Wires

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Now add connection wires to the output of the BR +ve and -ve

Here you will get about 100V DC and 130 mA current

Step 7: Make a series of LEDs

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A 0.5 watt at 3.3v LED consumes 150mA current so it is safe to make a series of

30 LEDs. You can use small LEDs of 20 mA current in multiple strings till the output

current and voltage matches (30 LEDs in each string)

LEDs can be assembled on a heat sink insulated material or if using 20mA LEDs

then on PCB. When circuit is ON Do not touch the LEDs or any area of circuit as

there are high voltage present . I have used 23 to 25 watt energy saver circuits.

There are 45 watt and 85 watt circuits available which can produce more current (a

one watt of energy saver bulb will consume 7.2 mA current so 45 watt can produce

100V and 320mA). In this way 1 Watt LEDs can be used. Following light is

consuming 230V at 53mA input and producing 12.5 watt light.

Step 8: Complete light

(http://cdn.instructables.com/F11/PL0E/H5IRUQXL/F11PL0EH5IRUQXL.LARGE.jpg)

Here is complete light it is rated 12.5 watt. At the AC 230v input it is consuming 53

mA current.

Step 9: Other big light using two energy saver circuits

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Step 10:

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Show All 7 Items

We have a be nice comment policy.

Please be positive and constructive. I Made it! Add Images Post

(/member/ramizsattar/)

14 days ago Reply (CO3XDBMHTZ3FNMW)ramizsattar (/member/ramizsattar/) (author)

May be the circuit you are using is it not working or damaged. Also read the procedure again and check that you are removing the correctcapacitor. Also check there should be a filter capacitor (0.1uf - 0.47uf) on the output

of bridge rectifier (UF4007).

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13 days ago Reply (CEAC1V5HTZ3FX5S)

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25 days ago Reply (C7NW6MOHTHKG15A)

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1 month ago Reply (CG4AYYQHSPP7W3T)

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1 month ago Reply (CF9S6T5HSM54HB8)

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1 month ago Reply (CUJKWZCHSNG145R)

Manendraks5 (/member/Manendraks5/) ramizsattar

I guess the capacitor image i've

uploaded below is a filter capacitorand this is what i am using at the o/p ofbridge rectifier... But i am not sure

whether the whole circuit is workingfine or not, as initially when i switch it

on the o/p voltage is 110 V dc then itfalls down gradually to 50-60 V dc. Iam totally stuck now....

Manendraks5 (/member/Manendraks5/)

Hi can any one please tell why I am getting very low o/p load current i.e. in 0.2 to 0.6mA.

1- I am using a 20W CFL rated 100mA which is giving o/p voltage of 50 to 60 V DCafter modification but very very less current i dont know why?

2- For bridge rectifier i am using UF4007 diode and below shown capacitor.

3- Connected 20 - 1 W Leds in series

Someone please guide....

(http://cdn.instructables.com/FH9/I7IH/HTZ42R3I/FH9I7IHHTZ42R3I.LARGE.jpg)

pmondal2 (/member/pmondal2/)

Faizan Hamayun (/member/Faizan+Hamayun/)

AOA if someone wants to use 3watt LED can it be used with 15,18,23 watt kit?.What

changes are required.

Manendraks5 (/member/Manendraks5/)

Hi ramizsattar, really a nice description. I just need a little more info. like I am using 1

Watt LEDs, please tell me how to stick them on aluminum sheet without using anyepoxy glue... is there any simple and inexpensive way to stick them on aluminumsheet safely?

Manendraks5 (/member/Manendraks5/) Manendraks5

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1 month ago Reply (CYCWSTOHSM5678E)

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1 month ago Reply (C2FIMMWHSNG12K1)

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2 months ago Reply (C328U5KHRTKK4FD)

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2 months ago Reply (CN13X18HR3ENUIO)

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2 months ago Reply (CB6MFCOHR8VDCPK)

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2 months ago Reply (COVW6WOHR0AZJNA)

below is the 1W LED i am using... while searching out alternative to epoxy i

got to know about thermal adhesives and some guys are simply mountingthese LEDs directly on PVC sheets or on heat sink using duct tapes.

What do you say...?

(http://cdn.instructables.com/F0Q/NK5S/HSNG1446/F0QNK5SHSNG1446.LARGE.jpg)

ramizsattar (/member/ramizsattar/) (author) Manendraks5

Hi

There is no other way to glue themwithout epoxy please solder them on

aluminum PCB then screw onaluminum sheet or heat sink. Its

better to use aluminum PCB.

Manendraks5 (/member/Manendraks5/) Manendraks5

do anyone has a suggestion or idea

about it?

mhqh77 (/member/mhqh77/)

uf4007 is not available in multan. what should i do?

ramizsattar (/member/ramizsattar/) (author)

Try UF4007 (this is ultra fast diode) or BYV26. DONOT use 1N4007.

If you can get a hyper fast diode (in 1A rating) that will be super.

Where do you live? If you live in Lahore go to Hall Road you can get this diod fromthere.

mhqh77 (/member/mhqh77/) ramizsattar

I lilve in Multan, and i am LegalAdvisor of one HV AC company

situated in Multan. Green HouseEngineers Multan..

mhqh77 (/member/mhqh77/)

sooner i will post our project for water tank with new features, i will tell you then

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2 months ago Reply (CRUPA3SHR3EKDNC)

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3 months ago Reply (CKK1B3DHQVPY3OM)

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ramizsattar (/member/ramizsattar/) (author)

1 watt LED uses 3.3v so you need 30 LEDs.

ramizsattar (/member/ramizsattar/) (author) ramizsattar

Which Diode you are using.

mhqh77 (/member/mhqh77/) ramizsattar

which diode i should use for installing1W LED in your project?

mhqh77 (/member/mhqh77/)

how many 1 watt LEDS?

ramizsattar (/member/ramizsattar/) (author)

AOA

One 5 mm LED takes 20 mA current and it is 3.3v so 30 LEDs in a string tocompensate 100 volts and depending on the current the number of strings will be 7 (if

140 mA current).

I will recommend not to use 5 mm LEDs I have already did it but the result was not

good the heat produced reduced the light its always better to use 0.5 watt or 1 wattLED.

mhqh77 (/member/mhqh77/)

Asslamoalikum, please let me know how many 5mm LEDs can be use in the aboveproject in 30 strings...

waqasOO9 (/member/waqasOO9/)

AoAgreat diy ..... why does the diode gets extremely hot, I have used the 3amp and 5amp

diodes also, still they get very hot

it gives current about 100mA DC

30 led in series 150mA eachI have also changed the value of capacitor 0.1uf, 0.15uf, 0.25uf 400v18w energy saver label says 135mA current

any idea what Im doing wrong ........... ?

ramizsattar (/member/ramizsattar/) (author)

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3 months ago Reply (C6HHKAEHQ2XTD9B)

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7 months ago Reply (C8ZOG2MHLZRTVYM)

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Hello dear! Sorry I was not checking my e-mails due to some problem. Yes we can measure the output voltage with and without load.

Can you please let me know where you placed that resistor. We can directly measure that voltage without any resistor directly with DVM.

Please check the selector of your DVM it looks like it is on Current selection. (I hopeso).

ramizsattar (/member/ramizsattar/) (author)

Hello dear! Sorry I was not checking my e-mails due to some problem. Yes we can measure the output voltage with and without load.

Can you please let me know where you placed that resistor. We can directly measure that voltage without any resistor directly with DVM.

Please check the selector of your DVM it looks like it is on Current selection. (I hopeso).

ramizsattar (/member/ramizsattar/) (author)

Hello dear! Sorry I was not checking my e-mails due to some problem. Yes we can measure the output voltage with and without load.

Can you please let me know where you placed that resistor. We can directly measure that voltage without any resistor directly with DVM. Please check the selector of your DVM it looks like it is on Current selection. (I hope

so).

jayesh7570 (/member/jayesh7570/)

Hello,

My question was can we measure off load voltage getting at o/p after rectificationdone? Because when I try to measure off load voltage, 12 ohm register used in this

circuit immediately blow off. please reply. Regards, Jayesh

MazharKhan (/member/MazharKhan/)

Assalam o Alaikum Ramiz Bhai,

No doubt that was a great experiment you did.

First why did you removed the actual capacitor from the circuit and put the other

one...???

Second... Please let me know; if I am using 8w or 12w energy savers, which kind of capacitor should I use and howmany LED's would be enough.

I would be lucky to learn more from a knowledgeable person like you and will be

grateful for your reply at my e-mail address freakned4u@yahoo.com.

Respect & regards,

Mazhar Khan

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7 months ago Reply (C9F4EK2HLZRV2K1)

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7 months ago Reply (CSYHV7UHKZAWIRL)

ramizsattar (/member/ramizsattar/) (author) MazharKhan

Assalam o AlaikumSorry for the delayed answer.Thank you for your nice words.

Well the capacitor I removed is acoupling capacitor (you can say) and

it actually connects two filaments ofenergy saver bulb and that is theoutput of that all circuit. So I removed

that capacitor and added a bridgerectifier I want to get DC output fromhere. The other capacitor is a filter

capacitor which actually filters theoutput DC voltage. You can

experiment with 0.2uf 0.3uf 0.47ufand 1uf above or equal to 400V.I got 0.5 watt LED which takes about

150mA current (try to use 140mA itincreases the life of LED) the output

current of 23 to 15 watt energy saveris almost 140 mA DC (aftermodification). the current of 8 watt or

11 watt is almost 50 to 70 mA DC.Now you have to choose the LEDwith the same current. You can

experiment with 8 or 11 watt butplease keep in mind the output

current.I have used 45 watt energy saver forthe same. it actually uses 750 mA

current when used as energy saver,but after conversion it only produces

270mA DC current. 270mA currentmeans the circuit will produce 0.270AX 100V = 27 watts. In this circuit I

used 1 watt LEDs which consumes300 mA current so my LED can worklonger on 270mA.

saurav.saxena (/member/saurav.saxena/)

Excellent idea.. thanks for sharing..!!

samalert (/member/samalert/)

Hey Ramiz you are very knowledgeable so do you have any idea how to increase thecurrent of AC-DC adapter am having a 500mA and need to push that to 2A or 1Ahow would i do that.

tnx in advance :)

ramizsattar (/member/ramizsattar/) (author) samalert

Hello Dear, I am thankful to you for the nice

comments. You have not mentioned the supplyvoltage.

I will give you a general overviewabout it. When you go for increase in

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9 months ago Reply (C3ATY58HIQ4NDQ9)

current from a source which has lesscurrent than the desired, the voltagealso play an important role, say if you

have 12 v and 500 mA then roughlyyou can increase the current to 800

mA by sacrificing voltage till 5 to 6volts (voltage drop), here you will usea boost topology for increasing

current (mostly used in switchingpower supplies). You can try boost

circuits (lots of available on internet)check their electrical specificationsfor your desired current and voltage.

When you try to boost the voltagethere you sacrifice current. Voltagedoubler circuit can be achieved by

using diodes. Thanks.

raza896 (/member/raza896/)

AOA Ramiz. Here i need your help. i bought these LEDs from Hallroad few days ago.

I want to add a single LED with a mobile phone battery which is normally 3.6v. Pleasesuggest me a suitable resistance for this circuit. I want to use a single LED with

Single Nokia battery. I am attaching the picture of led which i bought from hallroad.

(http://cdn.instructables.com/FIL/KIBI/H7QCTZTT/FILKIBIH7QCTZTT.LARGE.jpg)

iffee (/member/iffee/) raza896

You also need to mount this type of LED (3 watt) on heatsink otherwise after

heating it will go out.

ramizsattar (/member/ramizsattar/) (author) iffee

off course all LEDs (0.5W, 1W, 3W

.... ) must be mounted on a propersize heat sink.

ramizsattar (/member/ramizsattar/) (author) raza896

Sorry for the delayed answer dear.

please use 1 ohm or 1.5 ohm 3 Watt

resistor.

ahmedbajwa (/member/ahmedbajwa/)

thanks alot sir 4 all i tried it again today by 220n 400v capacitor & uf4004 diodes & i

joined 30 leds in series & again the all leds burnt again after some time. sir i text u after bring complete requried components 4 this cct. I'm the student of DAE

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9 months ago Reply (CYI9101HIPISE0I)

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"ELECTRONICS" 2nd year in pakistan steel institute of technology. sir have a gr8chirchating with u thnx alot again sir May ALLAH Pak blessed u success.

ramizsattar (/member/ramizsattar/) (author) ahmedbajwa

Try reading the instructable again forfinding the filament capacitor and

filament points. You can contact for any information

you need. All are welcome.

ramizsattar (/member/ramizsattar/) (author)

Hello dear I have used this technique and circuit for many conversions and they all worked on the

first go. I have used good quality LEDs all 0.5 watt. There may be an issue of LED current, if you check your LEDs for equal current then I

hope this issue will be solved, may be your LEDs are of different current rating. Themethod is to check is using a circuit (use LM317 in current control mode seecomments by other people) which will produce 150mA current (use a 6 or 9 volt

battery) and LEDs for the light. All LEDs must produce equal light with same color youmay need to check all 30 LEDs,

I always get LEDs from market after checking them on the spot because these LEDsavailable in the market are rejected lots from china which these market people bringand no one knows (even shop keeper) how to check them for best performance. You

need to do it yourself. try internet for LM317 for current mode (using 8.2 ohm 3 watt resistor) you will get lotof circuits on internet.

ahmedbajwa (/member/ahmedbajwa/)

thnx 4 rly sir i tried that cct by uf4004 & 275v 0.1uf i joined 12 small 8mm leds inparallel or in series but in series the leds is little bright.after some time the leds

fused.Can i used 1 watt leds same as in that cct like half means 15leds .i use in mycct 23watt saver & its o/p current is 75DCV i dont know how amperes in it? Sir now

tell me hows the cct working or can i use 220n 400v capacitor & uf4004 ?? sir i live inkarachi pakistan at landhi. regards

ramizsattar (/member/ramizsattar/) (author) ahmedbajwa

Dear read my project post again andtake your time to read it.

Circuit will produce almost 100v DC,LEDs you are using are of 3.3v a 25wCCF will produce almost 130 to 140

mA current. you should use at least 28LEDs in series to reach that 100v. 12

LEDs means 12 x 3.3v = 39.6v thatswhy LEDs burnt. 0.5 watt LEDs will workand should produce light equal to 11

watt light. If you are living in Karachiplease go to Tariq Road you will find

you components there. REMEMBER THIS IS A HIGHVOLTAGE AND HIGH FREQUENCY

CIRCUIT YOU SHOULD NOT TOUCHLIVE CIRCUIT.

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9 months ago Reply (C72K59XHIGFBCC1)

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9 months ago Reply (C2WKYABHINOEA6Q)

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ahmedbajwa (/member/ahmedbajwa/)

assalam o alaikum sir thnx 4 up load that circuit cause i love it. i've an problem tofound the 0.1 400v capacitor i bought 0.1 275v or 220n 400v capacitor sir please tellme now what should i do? i wanna complete that project at any cost. please reply

sir......?

ramizsattar (/member/ramizsattar/) (author) ahmedbajwa

Dear Ahmed

Thanks for your interest. 400v is asafe range you can use 275 v

capacitor but not less. Also 220n canbe used. Use 23 watt or 25 wattenergy saver. Do not use less than

this current will be reduced. Also usehalf watt LEDs not one watt. Be

careful its high voltage circuit. ENJOY. do you live in Lahore Pakistan if yes

then go to hall road and get therequired capacitor.

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