12VDC Fluorescent Lamp Driver

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A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp driver that does not require any special components. I finally found one in Electronics Now. Here it is. It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments.

Schematic

Parts

Part	Total Qty.	Description	Substitutions
C1	1	100uf 25V Electrolytic Capacitor
C2,C3	2	0.01uf 25V Ceramic Disc Capacitor
C4	1	0.01uf 1KV Ceramic Disc Capacitor
R1	1	1K 1/4W Resistor
R2	1	2.7K 1/4W Resistor
Q1	1	IRF510 MOSFET
U1	1	TLC555 Timer IC
T1	1	6V 300mA Transformer
LAMP	1	4W Fluorescent Lamp
MISC	1	Board, Wire, Heatsink For Q1

Notes

Q1 must be installed on a heat sink.

A 240V to 10V transformer will work better then the one in the parts list. The problem is that they are hard to find.

This circuit can give a nasty (but not too dangerous) shock. Be careful around the output leads.

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Comments

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Cableguy 12VDC Fluorescent Lamp Driver Friday, December 30, 2016 5:25:40 AM

This is a wonderful little circuit. I have been very unlucky with other circuits and this one works very well. I have substituted the transformer with a transformer from an old LCD Monitor so I can use the panel for lighting in my workshop, and have also incorporated an adjustable regulator on the transformer side so to use transformers from laptop LCD panels. I do find that if the transformer impedance is less than 0.5ohms, and there is no load connected to the transformer, it tends to blow up in a few seconds.

matt 12VDC Fluorescent Lamp Driver Friday, November 21, 2014 6:03:28 PM

Hi, how long of an arc will this produce?

andikovaci 12VDC Fluorescent Lamp Driver Thursday, January 05, 2012 3:34:19 AM

HI, I don't understand the 6V 300mA Transformer, u mean that 6V should be the output or the input of the transformer? If 6V is the output the input haw should be?

rohit 12VDC Fluorescent Lamp Driver Friday, October 21, 2011 11:39:00 PM

why dont you post a circuit which has a input of 12vdc and out put 240v AC suitable to power any cfl, maximum out of 40watts

Dmax 12VDC Fluorescent Lamp Driver Saturday, April 02, 2011 10:09:51 PM

Thanks for posting this up, I built the driver today , I had to use a NPN power transistor as I thats allI had at hand. works very well ,agin thank you :)

fazle haq 12VDC Fluorescent Lamp Driver Tuesday, March 15, 2011 3:03:21 PM

i have a layout of PCB which has 6 resisters,3 capacitors,4 transistors one of them is 2N3055 and transformer of 220v/9v and 12 or 2A...so any one knows this circuit i can give the page

Sagar 12VDC Fluorescent Lamp Driver Wednesday, July 21, 2010 4:51:24 AM

What does mean of T1,6V 300mA Transformer.Can you provide in detail.Also what about one end of both fillament both are open

anonymous 12VDC Fluorescent Lamp Driver Saturday, March 20, 2010 9:22:03 AM

can I skip C4??

Carmelo 12VDC Fluorescent Lamp Driver for 8w neon Friday, September 25, 2009 3:39:33 PM

Hi, i have 8w 56Volt 145 ma neon, this circuit i good for this one??? Otherwise how can modify this circuit for my neon??? Thanks

hamed 12VDC Fluorescent Lamp Driver Saturday, July 18, 2009 11:18:53 AM

hi i cant use this map!this lampp is 4 w or 40w ?? tanks

Johnny 12VDC Fluorescent Lamp Driver Sunday, May 17, 2009 7:35:44 AM

The transistor did not get hot when I put a transformer on this curcuit with a primary resistance of >3.00Їй but did with lower resistances.

anonymous 12VDC Fluorescent Lamp Driver Tuesday, May 05, 2009 12:52:17 AM

Hey, Engineer if you are really smart enough. Why don't you upload your design here so we can all see what you are talking about.

Engineer 12VDC Fluorescent Lamp Driver Monday, April 06, 2009 4:19:12 AM

oh guys...you guys are just so so so stupid. that circuit is all wrong.you will fry the mosfet in secounds if you fuck up something here. ya all know the old trick of using CD4047 with just a RC circuit to set it to oscilate. then use a couple of NPN transistors...preferably Power transistors. this is to buff up the waveform output and proved proper power so that it can hand;e up to 30 amps. i used 2N3055. you could also use 2N2955....just have to flip a few components around....and then you could use a heavy duty transformer..say you have a 240 to 12v 6 amps step down transformer...ya just have to connect the transformer to accept the amplified waveform (very powerfull) to the secoundary of the transformer....in this case we will say the 12 volt side...once powered up...you will get a deadly 240Volts output on the transformer...do it at your own risk..... i also use old car ignition coils to run a 40W Fluro light from just a 5 Volt source for more than 2 hours....and this was from a cell phone batteries...cmon man...you guys wana be electronic geniouses....well grow up guys...learn electronics first...its just so so so damn awesome....

anonymous 12VDC Fluorescent Lamp Driver Friday, March 13, 2009 6:29:29 PM

I built a modified version of this circuit with great results. I used a 6V 1.2A transformer and a 6W lamp. I omitted C4 and connected one pin at each end of the lamp directly to the transformer. With the two remaining pins at each end of the lamp, I connected a 0.001uF 1KV ceramic capacitor between them. This heats the lamp filaments and permits this larger lamp to ionize plus avoids the blackening at the lamp ends. I changed R1 to 270 ohms to acquire approximately 50% duty cycle and a slightly higher frequency coming out of the 555 Timer IC. At 12V, uses approximately 650mA of current. Ample light output. Works great!

russell 12VDC Fluorescent Lamp Driver Monday, March 09, 2009 9:08:33 PM

i think 12vdc is good but in our place i dont know if the components are available

jayson 12VDC Fluorescent Lamp Driver Wednesday, January 28, 2009 9:07:31 PM

hey i saw your 12vdc fluorescent lamp driver the design was good but can i change the transformer that you gave in that into 200 mA would lamp driver will still function. i'll wait for your answer

Techineer 12VDC Fluorescent Lamp Driver Monday, December 29, 2008 11:40:42 PM

I note several posters saying they will winding the transformer.... READ THE DESCRIPTION!!! The transformer in this unit is a standard small AC power transformer as found in almost any small appliance. The exact primary/secondary voltages are not critical.... the voltage ratio must produce high enough output voltage to fire the flourescent tube. (Apparently about 300V.) The 555 (Yes, the NE555 is equivalent) is connected to produce a square wave at its output pin 3, which causes the MOSFET to switch on and off. This produces current pulses in the primary of the transformer, which steps up the voltage to produce much higher voltage from the secondary to C4 and the tube. Current through the tube is limited by the capacitive reactance of C4. A bipolar transistor could be made to work, but would require an appropriate value resistor between the 555 pin 3 and the transistor base, as well as a resistor from base to ground. The transistor would need to be selected for the appropriate ratings of collector current, voltage and power dissipation. The circuit should still work with a 1A transformer. If the MOSFET is beefed up, it might drive higher wattage lamps. Running a 40w flourescent would require recalculation of values and current ratings. If you want to build one, you will need to do some research and learn enough electronics to do the design yourself. Asking someone to do the design for you means they would need to do several hours of work, even for an engineer who does it for a living.

anonymous 12VDC Fluorescent Lamp Driver Wednesday, October 01, 2008 10:58:09 PM

the design was good, but what if I'll use a 1 amp. transformer, whould it still function well?

anonymous 12VDC Fluorescent Lamp Driver Thursday, August 28, 2008 10:50:11 AM

somebody can explain the purpose of each components for this circuit???thx for help.. n any idea for making this circuit greater??

anonymous 12VDC Fluorescent Lamp Driver Thursday, August 14, 2008 1:34:18 AM

HOW TO MAKE TRAFO

anonymous 12VDC Fluorescent Lamp Driver Friday, June 06, 2008 3:34:19 AM

what about a 240v to 9v transformer, would that work?

Jimmy Ye 12VDC Fluorescent Lamp Driver Friday, May 02, 2008 3:53:07 AM

I am a ballast designer,I want to upload ballast electronic circuit for metal valid lamp.How can I upload the pictures?

kram17 12VDC Fluorescent Lamp Driver Tuesday, March 18, 2008 3:37:35 AM

this is great!!!!i would like to ask if how much power can this deliver???can this drive other appliances???

vidhubalu.n i need 12VDC CFL Light Driver Thursday, January 31, 2008 11:48:57 PM

i am from india i need to built a 12VDC CFL Light Driver using MOSFET and a farite core transformer

anonymous 12VDC Fluorescent Lamp Driver Tuesday, January 15, 2008 2:12:13 PM

can you run a 40w with this fluorescent driver

Govindarajan NGovindarajan onymous 12VDC Fluorescent Lamp Driver Friday, January 04, 2008 8:43:39 AM

Thanks for a very illustrative circuit.People like you are carriers of knowledge.Keep up the good work.With regards NGovindarajan

G.nishanth kumar 12VDC Fluorescent Lamp Driver Friday, December 21, 2007 4:31:26 AM

what is the need of TLC555 timerIC.and what is meant by "Q1 must be installed on a heat sink"

mohsin 12VDC Fluorescent Lamp Driver Saturday, December 15, 2007 9:37:45 AM

very simple and great thank u

Jafi 12VDC Fluorescent Lamp Driver Sunday, December 09, 2007 3:43:08 AM

Hi Great and simple circuit congrads !!

clynt 12VDC Fluorescent Lamp Driver Saturday, November 24, 2007 8:29:35 AM

is this a diagram for 4w or 40w? if only a 4w is it possible to build a circuit for 40w tubes and if so where could i find one

rajeshsingla 12VDC Fluorescent Lamp Driver Thursday, November 22, 2007 10:32:30 PM

sir,gd mrg.plz explan the complete working of this project how can work nd help me to make this project.

Team Hurricanes 12VDC Fluorescent Lamp Driver Thursday, November 08, 2007 12:49:21 PM

How can we change this circuit so that a 12V can run a higher watt Fluorescent lamp. We are looking for at least 15W. But we definitely need higher than 4W.

naveed 12VDC Fluorescent Lamp Driver Thursday, October 11, 2007 2:08:17 AM

that should be well explained with multimedia and more schematics should be there

lybzgurl 12VDC Fluorescent Lamp Driver Saturday, September 29, 2007 10:01:00 PM

can i use BJT instead of MOSFET?

sridhar 12VDC Fluorescent Lamp Driver Thursday, September 27, 2007 4:29:43 AM

sir how to design this transformar ? please sir can u give me some idea about that

lybzgurl 12VDC Fluorescent Lamp Driver Saturday, September 22, 2007 8:52:56 AM

what is the function of the MOSFET in the circuit? and can i use bjt on this circuit?

tharak 12VDC Fluorescent Lamp Driver Thursday, September 20, 2007 1:24:56 AM

is it 40w lamp or 4w lamp

schoolkiddo9089 12VDC Fluorescent Lamp Driver Wednesday, September 19, 2007 9:16:27 AM

youre circuit is mint. it is really helping me at school. youre mint.

sanoj 12VDC Fluorescent Lamp Driver Wednesday, August 22, 2007 12:51:35 PM

Can I extend the length of the wire joining the tube and the inverter output?

nivram okut 12VDC Fluorescent Lamp Driver Wednesday, August 15, 2007 1:45:39 PM

hi sir,,,, i wanna build this circuit,, C4 is 1KV would it be fine to use 50v or caps lower than 1KV??

Jayasiri 12VDC Fluorescent Lamp Driver Wednesday, July 25, 2007 11:12:12 AM

Its fantastic..I must try..Hope to make a wind a transformer for the values (Stepdown)

Neliets 12VDC Fluorescent Lamp Driver Wednesday, July 25, 2007 7:14:55 AM

What can i use if in TLC555 placE? is NE555 similar?

anonymous 12VDC Fluorescent Lamp Driver Monday, July 23, 2007 5:32:38 AM

i am not finding the mosfet.i there any solution?

mayank rathore 12VDC Fluorescent Lamp Driver Thursday, July 19, 2007 3:35:38 AM

sir this project is working well but i want to know the better alternatives for transformer used here.

kevin Wednesday, July 04, 2007 5:16:36 AM

its a great project and a unique one

abdurazeez 12VDC Fluorescent Lamp Driver Thursday, June 21, 2007 4:33:54 AM

Thanks 4 ds ckt nd lots i need lots to be 4warded into my e-mail address

dexter 12VDC Fluorescent Lamp Driver Monday, June 18, 2007 8:29:11 PM

its so nice

witjaku 12VDC Fluorescent Lamp Driver Monday, June 04, 2007 1:31:16 PM

allow me to try it

jerin 12VDC Fluorescent Lamp Driver Wednesday, May 30, 2007 1:31:06 AM

THANKS TO U BECAUSE THIS CIRCUIT IS VERY HELP FUL TO ME BECAUSE I USE THIS CIRCUIT TO MY PROJECT . THIS IS VERY GOOD.

anonymous 12VDC Fluorescent Lamp Driver Tuesday, May 29, 2007 8:39:06 AM

very good

P.W. 12VDC Fluorescent Lamp Driver Tuesday, May 22, 2007 2:09:13 PM

First of all big thanks to you! I searched for days to find this kind of circuit but is it possible to operate greater tubes than 4W (for example 8W or even more) when I use a 240 to 10 volt transformator or have I to use a more powerful mosfet (for example IRF 520 @ 100V 10A)? I already thought about to use another circuit (the 40 Watt FL Inverter) but I feel not experienced enough to build the coil on my own...

razi ur rehman 12VDC Fluorescent Lamp Driver Wednesday, May 16, 2007 5:36:00 AM

This instrument is heated fastly

perisacoklat 12VDC Fluorescent Lamp Driver Sunday, May 06, 2007 10:56:50 PM

Nice circuit...plss send me this project.thanks you

kumar 12VDC Fluorescent Lamp Driver Sunday, May 06, 2007 5:47:44 AM

your circuit structure is very good . it is very useful for me

Nishantha Simple subwoofer circuit & cabinat Saturday, May 05, 2007 5:53:56 AM

p/s send me that circuit
(Editor's notes: Scroll up about 6 inches. There you go.)

nitin 12VDC Fluorescent Lamp Driver Monday, April 16, 2007 1:00:13 AM

plz send me this project

miguel_pork 12VDC Fluorescent Lamp Driver Sunday, April 15, 2007 12:55:47 PM

any transformer will do. just be in the raitng... email me for questions, though i only read my mails 2x a week...:)

antsa 12VDC Fluorescent Lamp Driver Saturday, April 07, 2007 8:40:58 AM

Did you use a normal mains transformer with an iron core, connected "upside down"?

anonymous Gajanan 12VDC Fluorescent Lamp Driver Wednesday, April 04, 2007 2:35:59 AM

Please let me know how CFL lamp work, and on how many volts(min. & max.), either AC or DC it works.

rishitha 12VDC Fluorescent Lamp Driver Tuesday, April 03, 2007 7:44:20 AM

what type of timer has been used and can it be altered for a higher power

vishal black light Sunday, April 01, 2007 1:51:34 PM

i want to know about black light, i.s how its work, and on how many volts, please

anonymous 12VDC Fluorescent Lamp Driver Sunday, March 11, 2007 8:55:49 AM

Can we use BJT in place of MOSFET ?

karthik 12VDC Fluorescent Lamp Driver Sunday, March 11, 2007 1:26:33 AM

in this circuit 6V 300mA transformer is a AC transformer or what is that

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Cableguy	12VDC Fluorescent Lamp Driver	Friday, December 30, 2016 5:25:40 AM
This is a wonderful little circuit. I have been very unlucky with other circuits and this one works very well. I have substituted the transformer with a transformer from an old LCD Monitor so I can use the panel for lighting in my workshop, and have also incorporated an adjustable regulator on the transformer side so to use transformers from laptop LCD panels. I do find that if the transformer impedance is less than 0.5ohms, and there is no load connected to the transformer, it tends to blow up in a few seconds.
matt	12VDC Fluorescent Lamp Driver	Friday, November 21, 2014 6:03:28 PM
Hi, how long of an arc will this produce?
andikovaci	12VDC Fluorescent Lamp Driver	Thursday, January 05, 2012 3:34:19 AM
HI, I don't understand the 6V 300mA Transformer, u mean that 6V should be the output or the input of the transformer? If 6V is the output the input haw should be?
rohit	12VDC Fluorescent Lamp Driver	Friday, October 21, 2011 11:39:00 PM
why dont you post a circuit which has a input of 12vdc and out put 240v AC suitable to power any cfl, maximum out of 40watts
Dmax	12VDC Fluorescent Lamp Driver	Saturday, April 02, 2011 10:09:51 PM
Thanks for posting this up, I built the driver today , I had to use a NPN power transistor as I thats allI had at hand. works very well ,agin thank you :)
fazle haq	12VDC Fluorescent Lamp Driver	Tuesday, March 15, 2011 3:03:21 PM
i have a layout of PCB which has 6 resisters,3 capacitors,4 transistors one of them is 2N3055 and transformer of 220v/9v and 12 or 2A...so any one knows this circuit i can give the page
Sagar	12VDC Fluorescent Lamp Driver	Wednesday, July 21, 2010 4:51:24 AM
What does mean of T1,6V 300mA Transformer.Can you provide in detail.Also what about one end of both fillament both are open
anonymous	12VDC Fluorescent Lamp Driver	Saturday, March 20, 2010 9:22:03 AM
can I skip C4??
Carmelo	12VDC Fluorescent Lamp Driver for 8w neon	Friday, September 25, 2009 3:39:33 PM
Hi, i have 8w 56Volt 145 ma neon, this circuit i good for this one??? Otherwise how can modify this circuit for my neon??? Thanks
hamed	12VDC Fluorescent Lamp Driver	Saturday, July 18, 2009 11:18:53 AM
hi i cant use this map!this lampp is 4 w or 40w ?? tanks
Johnny	12VDC Fluorescent Lamp Driver	Sunday, May 17, 2009 7:35:44 AM
The transistor did not get hot when I put a transformer on this curcuit with a primary resistance of >3.00Їй but did with lower resistances.
anonymous	12VDC Fluorescent Lamp Driver	Tuesday, May 05, 2009 12:52:17 AM
Hey, Engineer if you are really smart enough. Why don't you upload your design here so we can all see what you are talking about.
Engineer	12VDC Fluorescent Lamp Driver	Monday, April 06, 2009 4:19:12 AM
oh guys...you guys are just so so so stupid. that circuit is all wrong.you will fry the mosfet in secounds if you fuck up something here. ya all know the old trick of using CD4047 with just a RC circuit to set it to oscilate. then use a couple of NPN transistors...preferably Power transistors. this is to buff up the waveform output and proved proper power so that it can hand;e up to 30 amps. i used 2N3055. you could also use 2N2955....just have to flip a few components around....and then you could use a heavy duty transformer..say you have a 240 to 12v 6 amps step down transformer...ya just have to connect the transformer to accept the amplified waveform (very powerfull) to the secoundary of the transformer....in this case we will say the 12 volt side...once powered up...you will get a deadly 240Volts output on the transformer...do it at your own risk..... i also use old car ignition coils to run a 40W Fluro light from just a 5 Volt source for more than 2 hours....and this was from a cell phone batteries...cmon man...you guys wana be electronic geniouses....well grow up guys...learn electronics first...its just so so so damn awesome....
anonymous	12VDC Fluorescent Lamp Driver	Friday, March 13, 2009 6:29:29 PM
I built a modified version of this circuit with great results. I used a 6V 1.2A transformer and a 6W lamp. I omitted C4 and connected one pin at each end of the lamp directly to the transformer. With the two remaining pins at each end of the lamp, I connected a 0.001uF 1KV ceramic capacitor between them. This heats the lamp filaments and permits this larger lamp to ionize plus avoids the blackening at the lamp ends. I changed R1 to 270 ohms to acquire approximately 50% duty cycle and a slightly higher frequency coming out of the 555 Timer IC. At 12V, uses approximately 650mA of current. Ample light output. Works great!
russell	12VDC Fluorescent Lamp Driver	Monday, March 09, 2009 9:08:33 PM
i think 12vdc is good but in our place i dont know if the components are available
jayson	12VDC Fluorescent Lamp Driver	Wednesday, January 28, 2009 9:07:31 PM
hey i saw your 12vdc fluorescent lamp driver the design was good but can i change the transformer that you gave in that into 200 mA would lamp driver will still function. i'll wait for your answer
Techineer	12VDC Fluorescent Lamp Driver	Monday, December 29, 2008 11:40:42 PM
I note several posters saying they will winding the transformer.... READ THE DESCRIPTION!!! The transformer in this unit is a standard small AC power transformer as found in almost any small appliance. The exact primary/secondary voltages are not critical.... the voltage ratio must produce high enough output voltage to fire the flourescent tube. (Apparently about 300V.) The 555 (Yes, the NE555 is equivalent) is connected to produce a square wave at its output pin 3, which causes the MOSFET to switch on and off. This produces current pulses in the primary of the transformer, which steps up the voltage to produce much higher voltage from the secondary to C4 and the tube. Current through the tube is limited by the capacitive reactance of C4. A bipolar transistor could be made to work, but would require an appropriate value resistor between the 555 pin 3 and the transistor base, as well as a resistor from base to ground. The transistor would need to be selected for the appropriate ratings of collector current, voltage and power dissipation. The circuit should still work with a 1A transformer. If the MOSFET is beefed up, it might drive higher wattage lamps. Running a 40w flourescent would require recalculation of values and current ratings. If you want to build one, you will need to do some research and learn enough electronics to do the design yourself. Asking someone to do the design for you means they would need to do several hours of work, even for an engineer who does it for a living.
anonymous	12VDC Fluorescent Lamp Driver	Wednesday, October 01, 2008 10:58:09 PM
the design was good, but what if I'll use a 1 amp. transformer, whould it still function well?
anonymous	12VDC Fluorescent Lamp Driver	Thursday, August 28, 2008 10:50:11 AM
somebody can explain the purpose of each components for this circuit???thx for help.. n any idea for making this circuit greater??
anonymous	12VDC Fluorescent Lamp Driver	Thursday, August 14, 2008 1:34:18 AM
HOW TO MAKE TRAFO
anonymous	12VDC Fluorescent Lamp Driver	Friday, June 06, 2008 3:34:19 AM
what about a 240v to 9v transformer, would that work?
Jimmy Ye	12VDC Fluorescent Lamp Driver	Friday, May 02, 2008 3:53:07 AM
I am a ballast designer,I want to upload ballast electronic circuit for metal valid lamp.How can I upload the pictures?
kram17	12VDC Fluorescent Lamp Driver	Tuesday, March 18, 2008 3:37:35 AM
this is great!!!!i would like to ask if how much power can this deliver???can this drive other appliances???
vidhubalu.n	i need 12VDC CFL Light Driver	Thursday, January 31, 2008 11:48:57 PM
i am from india i need to built a 12VDC CFL Light Driver using MOSFET and a farite core transformer
anonymous	12VDC Fluorescent Lamp Driver	Tuesday, January 15, 2008 2:12:13 PM
can you run a 40w with this fluorescent driver
Govindarajan NGovindarajan onymous	12VDC Fluorescent Lamp Driver	Friday, January 04, 2008 8:43:39 AM
Thanks for a very illustrative circuit.People like you are carriers of knowledge.Keep up the good work.With regards NGovindarajan
G.nishanth kumar	12VDC Fluorescent Lamp Driver	Friday, December 21, 2007 4:31:26 AM
what is the need of TLC555 timerIC.and what is meant by "Q1 must be installed on a heat sink"
mohsin	12VDC Fluorescent Lamp Driver	Saturday, December 15, 2007 9:37:45 AM
very simple and great thank u
Jafi	12VDC Fluorescent Lamp Driver	Sunday, December 09, 2007 3:43:08 AM
Hi Great and simple circuit congrads !!
clynt	12VDC Fluorescent Lamp Driver	Saturday, November 24, 2007 8:29:35 AM
is this a diagram for 4w or 40w? if only a 4w is it possible to build a circuit for 40w tubes and if so where could i find one
rajeshsingla	12VDC Fluorescent Lamp Driver	Thursday, November 22, 2007 10:32:30 PM
sir,gd mrg.plz explan the complete working of this project how can work nd help me to make this project.
Team Hurricanes	12VDC Fluorescent Lamp Driver	Thursday, November 08, 2007 12:49:21 PM
How can we change this circuit so that a 12V can run a higher watt Fluorescent lamp. We are looking for at least 15W. But we definitely need higher than 4W.
naveed	12VDC Fluorescent Lamp Driver	Thursday, October 11, 2007 2:08:17 AM
that should be well explained with multimedia and more schematics should be there
lybzgurl	12VDC Fluorescent Lamp Driver	Saturday, September 29, 2007 10:01:00 PM
can i use BJT instead of MOSFET?
sridhar	12VDC Fluorescent Lamp Driver	Thursday, September 27, 2007 4:29:43 AM
sir how to design this transformar ? please sir can u give me some idea about that
lybzgurl	12VDC Fluorescent Lamp Driver	Saturday, September 22, 2007 8:52:56 AM
what is the function of the MOSFET in the circuit? and can i use bjt on this circuit?
tharak	12VDC Fluorescent Lamp Driver	Thursday, September 20, 2007 1:24:56 AM
is it 40w lamp or 4w lamp
schoolkiddo9089	12VDC Fluorescent Lamp Driver	Wednesday, September 19, 2007 9:16:27 AM
youre circuit is mint. it is really helping me at school. youre mint.
sanoj	12VDC Fluorescent Lamp Driver	Wednesday, August 22, 2007 12:51:35 PM
Can I extend the length of the wire joining the tube and the inverter output?
nivram okut	12VDC Fluorescent Lamp Driver	Wednesday, August 15, 2007 1:45:39 PM
hi sir,,,, i wanna build this circuit,, C4 is 1KV would it be fine to use 50v or caps lower than 1KV??
Jayasiri	12VDC Fluorescent Lamp Driver	Wednesday, July 25, 2007 11:12:12 AM
Its fantastic..I must try..Hope to make a wind a transformer for the values (Stepdown)
Neliets	12VDC Fluorescent Lamp Driver	Wednesday, July 25, 2007 7:14:55 AM
What can i use if in TLC555 placE? is NE555 similar?
anonymous	12VDC Fluorescent Lamp Driver	Monday, July 23, 2007 5:32:38 AM
i am not finding the mosfet.i there any solution?
mayank rathore	12VDC Fluorescent Lamp Driver	Thursday, July 19, 2007 3:35:38 AM
sir this project is working well but i want to know the better alternatives for transformer used here.
kevin		Wednesday, July 04, 2007 5:16:36 AM
its a great project and a unique one
abdurazeez	12VDC Fluorescent Lamp Driver	Thursday, June 21, 2007 4:33:54 AM
Thanks 4 ds ckt nd lots i need lots to be 4warded into my e-mail address
dexter	12VDC Fluorescent Lamp Driver	Monday, June 18, 2007 8:29:11 PM
its so nice
witjaku	12VDC Fluorescent Lamp Driver	Monday, June 04, 2007 1:31:16 PM
allow me to try it
jerin	12VDC Fluorescent Lamp Driver	Wednesday, May 30, 2007 1:31:06 AM
THANKS TO U BECAUSE THIS CIRCUIT IS VERY HELP FUL TO ME BECAUSE I USE THIS CIRCUIT TO MY PROJECT . THIS IS VERY GOOD.
anonymous	12VDC Fluorescent Lamp Driver	Tuesday, May 29, 2007 8:39:06 AM
very good
P.W.	12VDC Fluorescent Lamp Driver	Tuesday, May 22, 2007 2:09:13 PM
First of all big thanks to you! I searched for days to find this kind of circuit but is it possible to operate greater tubes than 4W (for example 8W or even more) when I use a 240 to 10 volt transformator or have I to use a more powerful mosfet (for example IRF 520 @ 100V 10A)? I already thought about to use another circuit (the 40 Watt FL Inverter) but I feel not experienced enough to build the coil on my own...
razi ur rehman	12VDC Fluorescent Lamp Driver	Wednesday, May 16, 2007 5:36:00 AM
This instrument is heated fastly
perisacoklat	12VDC Fluorescent Lamp Driver	Sunday, May 06, 2007 10:56:50 PM
Nice circuit...plss send me this project.thanks you
kumar	12VDC Fluorescent Lamp Driver	Sunday, May 06, 2007 5:47:44 AM
your circuit structure is very good . it is very useful for me
Nishantha	Simple subwoofer circuit & cabinat	Saturday, May 05, 2007 5:53:56 AM
p/s send me that circuit (Editor's notes: Scroll up about 6 inches. There you go.)
nitin	12VDC Fluorescent Lamp Driver	Monday, April 16, 2007 1:00:13 AM
plz send me this project
miguel_pork	12VDC Fluorescent Lamp Driver	Sunday, April 15, 2007 12:55:47 PM
any transformer will do. just be in the raitng... email me for questions, though i only read my mails 2x a week...:)
antsa	12VDC Fluorescent Lamp Driver	Saturday, April 07, 2007 8:40:58 AM
Did you use a normal mains transformer with an iron core, connected "upside down"?
anonymous Gajanan	12VDC Fluorescent Lamp Driver	Wednesday, April 04, 2007 2:35:59 AM
Please let me know how CFL lamp work, and on how many volts(min. & max.), either AC or DC it works.
rishitha	12VDC Fluorescent Lamp Driver	Tuesday, April 03, 2007 7:44:20 AM
what type of timer has been used and can it be altered for a higher power
vishal	black light	Sunday, April 01, 2007 1:51:34 PM
i want to know about black light, i.s how its work, and on how many volts, please
anonymous	12VDC Fluorescent Lamp Driver	Sunday, March 11, 2007 8:55:49 AM
Can we use BJT in place of MOSFET ?
karthik	12VDC Fluorescent Lamp Driver	Sunday, March 11, 2007 1:26:33 AM
in this circuit 6V 300mA transformer is a AC transformer or what is that