Is the size and operating voltage of a CFL the only resaon that they aren't used in hand held flashlights?
Question by .Unknown. | last reply
Can you use a clf ballest to power a singing arc. My idea is to connect the 1kohm side of an audio output transformer to the 120vac input of a cfl and connect the other side to a cd player. I will turn the ac to dc by putting in a 1amp diode. so will it work? Also will a commom 3kv cfl work with dc? Please Answer! Please Answer !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Question by electricfan | last reply
Is there a possibility to reuse fused CFL's of 23W,15W.9W etc. With the PCB in the CFL can we possiblly connect an automobile headlamp and make it glow with a few alteration and/or additions. What is the power output in voltage of a CFL. Sombody please suggest a way to reuse fused CFL's in any way.Thanks
Question by Vijapa | last reply
Question by kishore1 | last reply
How to use burnt cfls in transistorized inverter circuits which was using tubes.?
Question by sanghajeevi | last reply
I started cfl assemblying bussines .but i have some problem i cant fix cfl peasting ...plzz help what kind off material use can fix
Question by manishn15 | last reply
I've seen a lot of videos of people making joule thieves to power CFLs, with only one or two cells. (These actually work, right?) However, most of them require large (larger than a soda can) inductors and/or ignition coils and transformers. Is there any joule thief (or circuit) out there capable of running a CFL at full brightness, with around 6V, but at the same time being as small and uncomplicated as possible?
Question by .Unknown. | last reply
Hello I have built this circuit, it can drive cfl's up to 15w, how do i modify it so that it can drive cfl's up to 25w? I am using D313 for his project as the D882 didn't gave me the results i needed. Using 12v battery. Here is the original instructable link https://www.instructables.com/id/A-simple-low-voltage-inverter-for-fluorescent-lam/?ALLSTEPS (This question is optional) Do u think the transformer i made for this circuit can be used for the famous Jeanna's light (Joule's Thief). If yes then how it would connect on the circuit? I will be making two or three more transformers like this. Do u think it needs modifications for its working like number of turns for the primary, secondary and feedback, different wire gauge?
Topic by Clarkdale44 | last reply
I got some CFL parts like transformers, transistors, capacitors, etc. How do I make a (simple) LED driver to make an LED light bulb using the CFL components? I was thinking of a capacitive dropper power supply but the CFLs also had transformers so I could use those. Too bad the internet doesn't have much info of using CFL parts to make an LED bulb. Because when people get a CFL base to make an LED light bulb, they could just as well use the CFL PCB parts too. If it helps, the two CFLs I took apart are a Commercial electric 14w reflector bulb and an (old) Lights of America 13w "The Bulb" bug light bulb.
Question by poiihy | last reply
This is a multi part question. 1. What normally fails on a CFL bulb? 2. If I scrap a good used transformer from a CFL will it work to build a direct box? I know it is pretty easy to buy a Jensen Trans or other brand new trans for a DI box but how many dead CFL bulbs do you see waiting to be reused or recycled? I would really like to reuse the tranny if possible. My understanding is that heat is causing a great number of the premature deaths in CFL bulbs. see images. Thanks AFF
Question by AFF | last reply
Our local (I think) news service has done a story about CFL's emitting too much UV radiation, You can view it here.Would you rather sit under an incandescent light or a CFL for a extended period of time?Do you think they should have warning labels on them?Do you have any other opinions on CFL's and energy saving globes?Or do you think this is all just a way to get more people to but the old incandescent bulbs?
Topic by thermoelectric | last reply
HiI have a couple of broken CFL's, The tube still works and I want to do something with it.Any ideas on how to make it light up from 12 volt, Without a ionization antenna (Using the heating filaments instead).Any other ideas??Anyone else want to know what to do with them too?I don't want any comments that say THROW IT OUT or similar
Topic by thermoelectric | last reply
i have a 1 million candle power spotlight form home depot ($10) it has a 6v 1200mAh battery in it. I want to make the rechargable light able to use low powered CFL bulbs. can it be done? Anyone know? Thank yall
Question by firemount | last reply
I happen to have a broken CFL lamp. I took it apart because i wanted to harvest the components that the electronic ballast contains.So how does a DC to AC CFL inverter look like? And how can i use the transformer and the inverter in order to make an electric shocker(battery powered)? Note that i also possess 2 other transformers from Kodak disposable cameras(one of them has 4 pins as the CFL's transformer and the other 5 pins) Thanks in advance.
Question by deathnoteviewer | last reply
In Brennn10's Compact Fluorescent Instructable there was a short discussion about the amount of mercury contained in CFL bulbs. The same topic came up in a mailing list I read, and there was some interesting analysis worth sharing.Statement:The Stranger (the Seattle weekly) has a column called "Dear Science" where the typically quite intelligent author argued that CFL bulbs weren't all that "better" for the environment because inevitable improper disposal put more mercury-n-shit into the environment. So unless you got all your power from a mercury spewing coal plant, you shouldn't use CFL's . And Seattle, getting a majority of it's power from hydro, shouldn't use CFL's.This was called into question for being selective analysis that encourages an attitude of "there's not currently a solution, so keep doing what you're doing", and elicited the following response:Just so I can bore everyone with what I think is the current level of knowledge about mercury and CFLs, here's some of the current information.NRCan did a study on how much mercury is actually in CFLs, and compares them to other typical consumer sources (e.g., watch batteries--if you throw one of them out, you've throw out five times as much mercury as in a CFL):http://oee.nrcan.gc.ca/energystar/english/consumers/questions-answers.cfm#mercuryAfter reading this, I actually worked out these numbers for myself on how CFL savings compare to mercury releases a few months ago. Of course, this is all more environmental destruction brand X vs. brand Y discussion that was being talking about.I was curious about what the numbers work out to, so I went to dig for some data; this is what I came up with.In 1999, about 1.75 trillion kWh were generated by coalEnergy Information Administration Annual Energy Review 1999, Figure 26In 1999, 47.8 tons/year of mercury emissions came out of coal-fired power plants.Source: U.S. EPA, Office of Air Quality Planning and Standards.1999 National Emissions Inventory for Hazardous Air Pollutants.http://www.epa.gov/ttn/chief/net/1999inventory.html#final3haps.This calcs out to a figure of 0.025 mg mercury per kWhAssuming 5 mg mercury per CFL, the equivalence point is about 200 kWh--a CFL would need to save 200 kWh before getting tossed in the trash. A quick calculation shows that this is about how much a CFL saves in half a year, if it were run 24-7: 75 W for an incandescent; 25 W for an equivalent CFL = 657 vs. 219 kWh/year, or 438 kWh/year difference.Of course, this assumes that the coal mercury emission rate is the same as it was in 1999; I'm not sure if measures have been taken since then to reduce mercury emissions. Also, this is assuming that 100% of the power saved by the CFL would be generated by coal-fired power plants. But even with that assumption, coal is such a large fraction of the power generation (typically about half)--it would jump from six months to a year, instead. Of course, this period gets longer assuming a realistic duty cycle, but still, those numbers all seem to pencil in below typical installed lifetimes of CFLs.Finally, there's a article from Home Energy magazine (behind a subscriber link), where somebody did a similar calculation with more current numbers, I think.http://www.homeenergy.org/article_full.php?id=457&article;_title=Understanding_CFLsHome Energy MagazineNovember/December 2007Understanding CFLsby Richard Benware"Although the use of CFLs is steadily spreading, public understanding about how to dispose of them responsibly has not kept pace."Life Cycle BenefitsIn order to disprove the myths about CFLs, let's begin at the beginning. When CFLs are created, manufacturers dose the bulb with a small amount of mercury. This mercury, when electrically stimulated, releases UV light, which subsequently reacts with a phosphor coating to create visible light. Thus mercury is an essential part of every CFL; without it, the bulbs would not produce light. The typical dose of mercury is about the size of a pen tip, and these doses have been getting smaller and smaller. One reason for this is that the laws resulting from the Restriction of Hazardous Substances (RoHS) Directive have made it illegal for CFLs in Europe to contain more than 5 milligrams (mg) of mercury.In the United States, there are no such laws limiting the amount of mercury in lightbulbs as yet, but members of the National Electrical Manufacturers Association (NEMA) have voluntarily agreed to limit the amount of mercury in the CFLs that they produce to 5 mg for bulbs of up to 25 watts and 6 mg for bulbs of 25 to 40 watts. The average CFL on store shelves today contains about 4 mg of mercury, and nearly all the CFLs in production contain less than 5 mg. The mercury used in all the CFLs produced in the United States represents 0.18% of the mercury used in all U.S. products andindustrial processes.CFLs do not release mercury as long as they are intact. In fact, they reduce net mercury emissions in the environment by conserving energy. For every kWh of electricity used by consumers, the average power plant emits over 1.5 lb of pollutants. If a 75W incandescent is replaced by an 18W CFL, the CFL will use 456 kWh less energy than the incandescent over its 8,000 hour lifetime. The Emissions and Generation Resource Integrated Database (eGRID) contains data on the emissions of the average power plant. Using eGRID's information to calculate the average emissions per kWh, we find that this single CFL has prevented the release of 2.72 lb of sulfur dioxide, 1.05 lb of nitrogen oxide, 5.67 mg of mercury, and over 700 lb of CO2.It is important to note that these are the reductions from the average U.S. power plant. The eGRID data show that, on average, nonbaseload emissions tend to be dirtier. And in addition to reducing emissions, CFLs save money for the consumer. The Energy Information Administration (EIA) gives a 2006 average residential electricity cost of $.1008/kWh. Using the example given above, and basing our calculation on this figure, we find that a consumer would save about $46 on energy over the lifetime of the CFL.When these bulbs finally do reach the end of their useful life, there are several pathways they can take. In the best-case scenario, the bulbs are recycled. Recycling rates are increasing, thanks to state regulations -- California and Minnesota have banned altogether throwing CFLs in the trash -- and improved consumer awareness. In 1999, it was estimated that only 15% of all fluorescent lightbulbs were recycled. Currently, that number has increased to around 25%, with higher levels in commercial applications. Since an average of 98.9% of the mercury is successfully recovered in the recycling process, this pathway generates minimal emissions.Even the CFLs that are discarded in the trash are unlikely to release much of their mercury. Although most of them break under current trash disposal methods, some remain unbroken, and will not release any mercury. But those that do break are not likely to release much mercury. EPA estimates that only 0.2% of the remaining mercury in a spent bulb is elemental vapor. The rest of the mercury is in the glass, the phosphor coating, and the electrodes of the bulb. Mercury absorbed in these areas is not readily released. In fact, an EPA study found that only 6.8% of the total mercury in a broken bulb will be released. Since the average bulb on the market today contains only 4 mg of mercury, it will release only about 0.27 mg, even if it breaks when it is thrown in the trash.The only disposal option that could lead to the release of any significant amount of mercury is incineration. Today, many incinerators have advanced mercury control technologies. CFLs disposed of in such incinerators would release up to 90% of their mercury, but those emissions would then be removed by these technologies. Incinerators without these technologies are not capable of removing the mercury. But even after accounting for all of the emissions that occur via all of the routes listed above, CFLs represent a mere 0.01% of total U.S. mercury emissions annually.It is important to note that even if CFLs released all of their mercury, the environment would still be better off than it would be if nobody used CFLs. This is true because the average power plant releases 5.67 mg of mercury to power each 75W incandescent bulb. In short, replacing incandescents with CFLs is a great way to save energy, reduce mercury emissions, and save money (see "Discounting CFLs").
Topic by ewilhelm | last reply
Why some CFL Inverter circuit will broke under no load? I buy a UV Tube with CFL Inverter. When I pull out the UV Tube the circuit were shutdown. I want to know what's wrong in this circuit if I run it on no load
Question by james34602 | last reply
I saw a schematic from http://makelifeeasy.yolasite.com/ this is the schematic design http://members.misty.com/don/linefl.gif and i tried to make a PCB layout and this is what i came up with the design http://img825.imageshack.us/i/circuitz.jpg/ is the layout correct? the blue line will likely be a jumper wire.. thanks in advance for the guidance.. =]
Question by gameshark888 | last reply
I'm thinking of the newer 'magnetic' high-frequency ones, or maybe even a CFL (https://www.instructables.com/id/MAKE-A-HIGH-VOLTAGE-SUPPLY-IN-5-MINUTES/). Of course a ~15 Watt CFL isn't going to output very much though.
Question by PhahQ | last reply
So I'm making an HV power supply from a flyback transformer and a CFL, I need to know that I've wired everythng correctly, and I'm not going to kill everything plugged into the walls in my house when I turn it on. From left to right is: Socket, IEC13 (From an old computer power supply) Switch, rated for mains voltage (from old CRT TV) CFL circuit Flyback Blue wire is the live and brown is neutral, the red and black connect to the primary coil of the flyback. All help appreciated, thanks.
Question by Pie Ninja | last reply
What is the difference between the phosphors used in fluoro tubes and the phosphors used in EL wire? Can the 2 types be used interchangeably? i.e can smash open (and should I smash open) a CFL bulb to get the phosphors inside to make EL wire? How well would it work? (If at all)
Question by .Unknown. | last reply
I've dismantled a cheap & nasty fax machine. Out of this I've extracted a Dyna Image scanning unit, CFL illumination, 7 wires. I'd quite like to use the CFL, and maybe the scanning part, but does anyone know how to use this? I've not found this particular unit on the internet - sticker says "DL100-05EUIC (BARCODE) PHFA201663" L
Topic by lemonie | last reply
HelloI submitted my first intructable Make Compact LED Lamp (CLL) from a Compact Fluorescent Lamp (CFL) on 2nd June 2009. Link to my intructable ishttps://www.instructables.com/id/Make-a-CLL-from-a-dead-CFL/I also taken part in contest Get The LED Out. Today while I was browsing entries for that contest, I found an entry which is a COPY of my intructable. Link to that instructable ishttps://www.instructables.com/id/COMPACT-LED-LIGHT/Only some differences are there in both instructables. That person submitted instructable on 11th June so it indicates it might be a copy of my instructable.I wonder how judges allowed that intructable to enter in contest.What to do now?
Question by electrosam | last reply
I want to make a CFL inverter powered by 12 voltage battery and a 220 voltage AC. Some people say it signal transformer or SMPS transformer that’s why I did not mention the name of it. To make and design the transformer what is the formula and materials is needed? Please! Please!! Please!!! Help me to design this transformer. Thanks in Advance.
Question by robi_ncc | last reply
Http://www.aaroncake.net/circuits/flampdrv.gif In this could i replace the 55 timer this with a arduino? If so what would the code be? If not could you atleast tell me what kind of wave the 555 is producing so that i can emulate the same with an arduino? The circuit in question is for a 12 VDC flourocent lamp driver Thanks
Question by qwerty156 | last reply
Where can i find a ferrite toroid for my joule thief? Iv'e opened almost all the devices in my house!!! Just wanted to make a simple joule theif. I dont have any CFL's to open.
Question by TheMasterThingMaker | last reply
Can Flyback Transformer drive by Induction Oven? I thing Induction Oven can create 20kHz-40kHz. http://en.wikipedia.org/wiki/Induction_cooking And Flyback Transformer need high frequency to work. I thing waveform is not a problem. I used plasma ball driver , CFL ballast driver and Halogen Transformer as my FBT driver . And work well.
Question by james34602 | last reply
I have a busted lcd tv that the backlighting still works but i would like to get rid of stock power supply and input box. In essence make it into a light table. The plug that powers the inverter for the CFLs has 9 wires 5 red 4 black and is marked 24v. now here comes the crazy question can i wire in a 24v adapter with a simple on/off switch. Any help will be greatly appreciated.
Question by modzero556 | last reply
I've been attempting to construct a Joule thief circuit but it appears the circuit won't function, even with the essential parts that I scavenged from a CFL bulb. The parts are: 112dl transistor, LED, ferrite core, 1K ohm resistor, 1.2volt rechargeable AA battery and magnet wires, 14 turns on the core and I attempts to switch the connections on the wires, it appears no hope. I've watched all the tutorial videos on YouTube but appears to be failure. If you found a solution to resolve this issue, please explain it specifically. Thanks !
Question by BlackWolf1024 | last reply
Hello all, So heres the deal, i found someone trowing out a vizio smart 3d tv and i think to myself surely i can salvage something. One of the thing i want is the cfl tubing back light. When i plug it in the back light will flash but not stay on and im pretty sure this is due to the control board needing to tell it to stay on, seeing as how this isn't working i was looking for another way to power the back light purely from the power supply. Is there anyone that cold please help me?
Question by MarkH449 | last reply
I recently managed to replicate a dark sensor circuit using a LDR, a 220K & 330 ohms resistor, a BC547 transistor and a LED. But the problem is that it is very little sensitive to light. During daytime there is no problem but at night, under the CFL light it doesn't sense the light and turns on. To turn off the light, I have to illuminate the LDR with a external light source and that too very close. What I want is that the LED should light up only when there is complete darkness. How should I modify the circuit to increase the sensitivity? The circuit diagram is as given below.
Question by Arijit Chatterjee | last reply
I see write-ups aplenty of how to fix screen backlights and re-using CCFLs from scanners and such, and ALL say 'beware high voltage !'. NONE, however, specify what those voltages/currents/frequencies may actually BE ???! Several times I have been offered LCD monitors with obvious backlight problems and have only gotten one to work by replacing bad caps. This all makes me wonder - could it be that the ballast from a dead, smallish CFL might power a CCFL quite nicely - does anyone know ?! Thanks for any replies ! PS: Please, no lectures about the dangers of high voltages and so forth, this question is being asked by an adult who is safety conscious.
Question by vtsnaab | last reply
HI I HAVE A 65 WATT CFL , A MOGUL BASE AND A HP LAPTOP CHARGER THATS 65 WATTS AND PUTS OUT 18.5V AND 3.5A , I KNO ENOUGH ABOUT ELECTRICITY TO KNO THAT MY LIGHT WONT PULL MORE AMP THAN NEEDED, 1.08 FOR MY LIGHT, AND OF COURSE WONT USE MORE THAN 65 WATTS, BUT I DONT WONT TO TRY WIRING THE CHARGE INTO THE MOGUL BASE WO SOME CONFIRMATION HERE, FROM WHAT IM THINKING IT WONT START ? CAUSE NEED HIGH VOLTAGE AT GITGO? WHAT DO YOU GUYS THINK ? ANY IDEAS TO CONVERT IT SO I CAN USE THE CHARGER AS A BALLAST ?
Question by ISAC CLARK | last reply
Hello I got this transformer from an old ups, there are four wires on the primary side black, blue, green , yellow and two on the secondary red and blue. This transformer used to charge 12v 7.5ah battery also converts it back to 220V in backup mode. Tried testing its output and got this (Mains 220V) Black to ground Blue to mains-> 7.9v on secondary Green->5.5v Yellow->6.5v Connecting Blue and Green to mains and it was a shot circuit and blown my fuse. I want to use this for making a decent power supply 12v+ output, is this possible? I also saw this video https://www.youtube.com/watch?v=mc4GZM-kFUY&hd;=1 The guy is using his ups transformer for generating hv to power cfl using tip122, i am not sure how to do this using my transformer. I need to make use of this transformer somehow, otherwise its just eating dust at my home.
Topic by Clarkdale44 | last reply
I suffer with SAD and a sunrise clock helps a lot getting up in the mornings and winding down at night. I have one similar to this It uses ses 14 bulbs, currently using halogen 42W but these don't last long and I managed to blow one closing a drawer! So, I'm looking for a way to use 10 to 20W leds but obviously, given its UK mains voltage that does the timed dimming, finding a suitable LED driver is difficult. There are a few out there but I've no idea which ones will work as it need it to. Also, the only commercially available dimmable led bulbs are e27 fit only, very expensive and only 12W, around 400 lumens. I need at least 600. Also the more the better. Looking to use 6400K or higher colour, as the higher temp colours are proven to be better for SAD. I can make electronic circuits and have hacked together/repaired plenty of stuff. I would rather build something than buy as I don't have £££ to spend! Does anybody have any ideas to help me get started? I'm also looking to replace my SAD bulbs, currently 85W cfls with LEDS as well.
Topic by kristyon | last reply
Alright, I ask that everyone please read everything in this question before answering :). I hopefully going to be very thorough. I am building a tesla coil and am just about to give up and buy a NST. I have many high voltage sources laying around, but, so far I haven't had much luck. The first plan was to use a large ballast (florescent light) to drive a flyback, but it was to powerful, so I got a CFL driver, and it didn't work (not the driver so much as the whole project) so now I am left with an ignition coil. I know that I can use a light dimmer switch to power it, but it will still be 60hz I think and I here that is not safe for a tesla coil. Although, I don't think anyone is going to let high frequency and voltage arc across their skin anyway. So will something at this low of a frequency still work to power a tesla coil. If not do you have any ideas I can use. I have a flyback transformer and an ignition coil so any ideas that come to mind please share.
Question by jj.inc | last reply
Hello, I'd like to request someone to share their knowledge about their "flyback" knowledge or experiences with me since I'm having trouble finding the primary coil pins with my flyback transformer. I'm constructing my own HV power supply and I decided to go through this tutorial. I've read much on the web and found the 0v output pin of my flyback. The problem is .. I couldn't find the primary and secondary since I'm using an analog multimeter and the tutorials on the web are all digital.. When I test the pins with my multimeter set to ohm range of x1, I do not get a pair of 1 ohm pins but instead I got the result of "Continuity" when I test on following pins, they seems to be connected but none of the pins show to 1 ohm.. and thus I've adjust the Ohm Adjustment. The results are Continuity 1 : 1,2,6,8 Continuity 2 : 3,4,7,10 No Continuity: 5,9 Pin no 5 is 0v output.. I've attached the pin number diagram at photos... my drawing and actual pins.. Have you got any idea to find out the primary coil? I've also attach my driver from CFL.. Thanks
Topic by _π | last reply
Yes, I know it's nearly 3am on the east coast... but and idea struck me. So the idea is to feed small amounts of mechanical power into the power grid. Not necessarily run the meter backwards, but supplement power consumption.I've researched grid tie inverters - which are very expensive. For those wondering, a grid tie inverter is feeds mains power back into the grid by syncing phase angle and phase (no dead shorts :) ) and applying slightly higher voltage. They are very efficient and really not within a college student experiment budget :pSo I was thinking... Rather than go from mechanical to DC to AC to grid - go from mechanical to AC to grid VIA an induction motor. As a proof of concept, use a DC motor + battery to turn an induction motor. Plugged into the grid, in theory, should apply current. Oh, but the phase you say? How do you prevent a dead short?"I've thought of this -- before applying mechanical power - have the grid bring the induction motor up to speed. Then try to turn faster (apply a torque) with the DC motor, for example. In theory, the amount of extra power put into the grid will be related to the slip angle of the motor - which will also control the speed of the input (so you can't go over speed by too much).Keep in mind that this whole battery business is just a proof of concept sort of thing - I'm not talking perpetual motion or any hohaa craziness. In the end, the final mechanical input will be around 200 watts. I expect this to be very low efficiency (likely 50%ish), 100W isn't an answer to the energy issues - but it's an experiment. It's also not going to come even close to driving the meter backwards, but it should run (as supplement) my laptop + two to three 13w CFL's :DI think the theory is feasible -- the inspiration comes from flywheel driven UPS systems. An induction motor is driven while mains power is on to keep a flywheel in motion. When the power goes out, the FW drives the motor and feeds to local grid.I'm thinking of using a "low" rpm induction motor.... If I recall, ceiling fans are 16 pole? So that's 60Hz2*2/16=450rpm... Add ceiling fan motor to the list of things to hunt for :) Looking at the one above my head, it looks like it even has a nice bolt pattern for some sort of pulley shenanigans :DCan someone either throw some ice water on me and slap me for being an idiot -- or let me know if I've found a boat to Valhalla.Oh, and my apologies for dancing around the "mechanical input" details.... There's a reason for this, I promise :) In any case, insight and information is appreciated :)
Topic by trebuchet03 | last reply