USB Cold Cathode?

Hi, I have been wondering about creating an ambient glow around the back of my iMac with a usb powered cold cathode light or led strip, could anyone help me with this? i would prefer a prefab solution that doesn't involve much soldering or modification of hardware but that stuff is not necessarily beyond my skill level. (and sorry if this is in the wrong place, its my first post :P )

Topic by awesomesquared 8 years ago  |  last reply 8 years ago


I dont really want to buy a $130ground fx neon kit for my car, can i use cold cathodes for the underside?

The ground fx kit for my car would be around $130 bucks. Cold cathodes go for $6 on ebay. Can i use 6 cold cathodes and wire it into my car?

Question by XxtwistedxX 9 years ago  |  last reply 9 years ago


Cold Cathode Tube Voltage and Speaker Questions

My brother has some cold cathode tubes, some about 6" long, some about 12" or more. I was thinking of hooking them up to my bike, as shown in one of the great Instructables here, but I wasn't sure of the voltage. I don't want to over-power the tube, and bust it. Plus, the two wires coming out of it are in this black connector, so I don't know which is positive or negative. The tubes put out blue light, if that makes any difference.I have an old sports radio, which works pretty good and could be turned up really loud. I desoldered the speaker, and hooked it up to a pair of wires coming from a head phone jack. I plugged it into my iPod, expecting loudness, but no - I had to hold it up to my ear, on full volume, to hear it. Is it because the iPod isn't outputting as much voltage or current to the speaker as my radio was? The radio used 3 AA. I really wanted a portable speaker that actually put out big sound, so I didn't have to have those buds stuck in my ear.Thanks y'all!

Topic by Bran 11 years ago  |  last reply 11 years ago


Cold Cathode lamp with SOLAR power / battery?

I have an cold cathode lamp from a scanner. I want to install it behind a piece of artwork i made to sort-of backlight the image. it can be very dim... i don't need to get full brightness out of it. My question is.. do you think this is possible with a solar panel and rechargeable pack of some sort to dimly light this thing???? I really want to use solar on this, due to the nature of the piece itself. Any ideas on watts or volts or any other input??? On the power input for the scanner itself it reads 16VDC 0.9~1.0A... if that helps. any help or suggestions are welcome!!! thanks !

Topic by fleanine 11 years ago  |  last reply 11 years ago



Would a 12" Cold Cathode light fit anywhere IN an Xbox 360?

I currently have already installed 4" cold cathodes but was wondering if 12" lights would fit.

Question by Steeps5 9 years ago  |  last reply 9 years ago


Will my Cold Cathode Computer Light work?

I just bought a Coolermaster ULTRA AURORA (DUAL) from a local store. On arriving home, i went to place it in my new HAF 932 case from Coolermaster. I have open slots and power supply for it but my video cards are to big to place it from the inside into the rear panel port. It has a on and off switch and a dimmer on it. Since i cant fit it in, i looked at bypassing the switch. the cord that plugs into the psu can fit in the switch or the inverter. I wanted to know if i can SAFELY bypass the switch. Go directly from the psu to the inverter to the bulbs is my plan. Would that be bad for anything? Coolermaster was of no help. Apparently, the model is 5 years discontinued no longer has manuals on file. They were less then helpful.

Question by trf 9 years ago  |  last reply 9 years ago


Laptop LCD Cold Cathode re-use

So recently, an old laptop of mine died. It was an old dinosaur of a laptop, slowly running down the remaining years of its life. Then it died. So sad. To honor its death I dismantled it. I got an interesting motherboard, some decent speakers, a 5gb harddrive along with a floppy and disk drive. What really interested me the most though is the LCD screen. At first I hoped that I could re-used the screen as a tertiary screen for my desktop, but later I realized the near-impossibility of this task and gave it up. Instead I chose to take the screen apart for its cold cathode lamp. It's almost 12 inches in length, and very thin. Before the motherboard died, the LCD back light was still working. So I wanted to take it out, along with its inverter, to attempt to re-use it. Soon after doing this I saw a problem in my plans: the input of the inverter is a whopping nine wires. This is a bit more than I'm used to dealing with for power supplies. I was wondering if you guys knew any way that I could go around this? At request I can most more pictures and model number of the inverter in case you can't read it in the photo. tl;dr - Cold cathode inverter in picture. output is two wires, input 9 wires. How do I use this

Topic by Pixel_Master 7 years ago


How do I make a power inverter for CCFL's? Answered

I want to know how to male a CCFL power inverter because i have a lcd screen backlight, but i never had the inverter for it. ho do i go about making one?

Question by zack247 9 years ago  |  last reply 6 years ago


Scanner inverter outputs

I've just been wondering about the output of scanner inverters for a few projects, what kind of voltages and amperages are they outputting. I have a few little ideas but don't really know that much about their outputs, I gave googling and parts numbers a go but mostly found unrelated pages or had no luck with part numbers...

Topic by killerjackalope 10 years ago  |  last reply 10 years ago


is koolaid better for you than soda?

So the big question...is koolaid (the drink) better for you than soda? or equal? BTW: i just ordered new blue cold cathodes and i fixed the gears on my old bike.

Topic by Yerboogieman 10 years ago  |  last reply 8 years ago


How can I make a power supply for cold cathode lights that would normally go into a computer power supply? Answered

I'm looking to put some cold cathode tubes behind my flat screen LCD tv and my computer LCD. I was going to pick up the Dioder lights at IKEA until I saw they were $50 for a set of 4!!! Any ideas? Is there an instructable that I missed? Thanks all.

Question by Joaquin9 10 years ago  |  last reply 10 years ago


My front shocks

My front shocks are WAY too soft, i need help tightening them or making them harder, not including water. Thanks!

Topic by Yerboogieman 10 years ago  |  last reply 10 years ago


i would like to power a stip of led's or 1 Cold Cathode using a usb is there away to do that thanks in advance

Want to use a pc's usb to power a Cold Cathode light or led lights for a pc trolly that i am building

Question by udeth 9 years ago  |  last reply 9 years ago


cold cathode light totally interferes with my IR remote control!!!

I have a view-box for looking at negatives that uses cold cathode tubes as the light source--whenever this light is on my IR remote control for my wifi radio does not work--i have isolated it to EMI from the light not the light itself. when i covered the peripheral area where the wires and 2 ballasts are with 2 layers of heavy duty aluminum foil it drastically reduced the interference. i cant practically use the foil. Does anyone think ferrite snap cores from radio shack will work? if so-- where and how many should i put?--really need help--i have little electronic experience--

Question by roccosiffredi 5 years ago  |  last reply 5 years ago


ccfl inverter, samsung sic320?

Hello, my laptop recently died, i killed it, anyway, i have salved some stuff, one of which is the cold cathode and inverter assembly, except, i cant get it to light up, i tried everything, i hope i didnt kill it.  It is a samsung sic320 inverter board, if you hold it where the wires are facing up, from left to right in wire color is, orange, red, brown, and black, i dont have a camera, i killed it to expirementing, but just wanted to know which wires lit the cathode and at what voltage.

Question by cburgess7x 6 years ago  |  last reply 6 years ago


Circuitry for lighting

Hey all, I have never really done much circuitry to this date, but I was hoping to make a fairly complex lamp that may require a good dose of it. What I'm looking to do is wire four cold cathode tubes (12V, the kind that are used to light computers), as well as two LED lights with arduino based flicker control, and run them off of a wall socket? The pictures are a (very) rough sketch of the setup, as well as a supply list. Is there any way someone could explain what this might require to me in baby terms? All the best, Adrian

Topic by am_rawr 6 years ago  |  last reply 6 years ago


USB Powered UV Light

Hi, I would like to build a germicidal lamp which is powered by USB for a school assignment that I'm doing and I was wondering if someone could help. I did a search on a trading site to see the type of  lamps and there seems to be 3 types, cold cathode, quartz and ones which actually look like bulbs. Which type can be easily wired so that it can be powered by a USB port? Advice will be appreciated.

Topic by egrayton 6 years ago  |  last reply 2 years ago


18v dropped to 12v?

I want to limit two 9V battieries, in serial to 12v. I want to run a cold cathode off em, if the strain is too much, I'll join two parralell sets of two 9v batteries in the circuit. Anyway, how do I do it? I can't find any 12V regulators at all, and I don't know what sort of resistor I'd need, is there one that would limit it to 12V, with the standard 9V battery ampage? How could I archive this? Thanks.

Topic by Josho 10 years ago  |  last reply 10 years ago


power inverter: help? Answered

I have this power inrter, and i once hooked it up t a mac power supply converted to a benchtop power supply. i didn't know i yet, but the power supply was surging, and it started making he inverter smoke. i turned it off, but the inerter never worked again. can i reuse any of these parts to make a new one? i dont think it was the actual inverter piece, but one of the others p.s. this inverter was from a hp scanjet scanner

Question by zack247 9 years ago  |  last reply 8 years ago


LED bike tires

We've seen all sorts of ways to light up your bike. Here on Instructables people have used LEDs, cold cathode lights, and even fire. Now a company called Cyglo is making new tires that light up with LEDs. They are powered by the spinning of the wheel. When the wheel isn't spinning you can see the individual LEDs. They blur together when the bike is moving for a persistence of vision effect. They're not on sale yet, but hopefully soon. And then there will be one more way to be brilliant while riding at night. Cyglo Night Bright Tyres turn on the magic of colored light

Topic by fungus amungus 8 years ago  |  last reply 8 years ago


how do I make a sound reactive for anything to plug into? Answered

Hi, I have seen many different types of sound reactive adapters, but I am looking to make something that is kind of like the "clapper" where you can plug any appliance into and then is sound reactive to music.  Now for example, if i wanted to plug in some Christmas lights, or a tube light into a plug adapter where it would light up to music.  I have cold cathodes that use the 4pin molex on my computer. if you are familiar with those, I am looking for the exact same effect except for me to use with a standard plug.

Question by 63 8 years ago  |  last reply 8 years ago


How can I connect a 110V 12" 8W neon lamp in a PC case without having an external cable? Answered

I am going to mod my PC case. I probably can't get this http://www.amazon.com/12-Cold-Cathode-Case-Lights/dp/B000BUDHOA/ref=sr_1_6?ie=UTF8&qid;=1302654235&sr;=8-6 since I live in South America, and I have only found an 12" 8Watt 110V blue neon lamp for $8. It would be fine, but I don't know any effective and practical way to get 110 from inside the computer without opening the power source... Please help!

Question by colorex 8 years ago  |  last reply 7 years ago


Anyone know supply voltage for a Microtek ScanMaker 3600 flat-bed scanner?

. I just rescued a Microtek ScanMaker 3600 flat-bed scanner from the curb and can't figure what kind of power it takes. Nothing on the scanner case and the web pages at Microtek just say "wall adapter" without any specs. Didn't find a SM3600 fan site, just reviews that mention adapter as being an in-the-box item. Anyone know volts, AC or DC, and polarity? . There was a slight drizzle going on when I rescued the scanner. I've got the case open and I dried what few drops I could get to with paper towels. Is there anything in a scanner that will quit working/burn up if it gets wet or can I safely power it up once it dries out for a day or two? . I don't really need a scanner, but I've read on here that the cold-cathode thingies are fun to play with. :) . TIA

Topic by NachoMahma 11 years ago  |  last reply 11 years ago


Building a sound reactive lightbus/module visualizer

Hello fellow instructables.com dwellers!!I am wanting to do a case mod with a window of frosted plexi glass and have LED lights behind it for show. I also want to be able to make them dance to music or whatever goes through my soundcard and cannot find a good instructable for this.What I understand is that you need a sound reactive module hooked up to your lights and have seen these things for sale on ebay, but no info on how to build my own.here are some links to videos who us this tech in lighting:LED visualizerexternal cold cathodsON A DS!!sunbeam lightbusmorelast oneSryy bout all those links : )So if anyone can help me find a DIY guide for something like any of these, or any info that will prevent me from having to buy one and have no idea how to mod it. Thanks to everyone who replies in advance, and wish me luck.

Topic by The Jesus Panda 11 years ago  |  last reply 11 years ago


Lighting powered by an AC to 12V DC 4pin Molex adapter?

Hello  I'm making a gift out of a traffic light that I'm going to snazz up (paint red, replace lenses with stained glass, new lighting) And I'm going to use computer case lighting as I am familiar with it. As I don't want to use a psu just to power molex connectors I'm going to use this www.crazypc.com/products/7410.html AC to 12V DC 4pin Molex adapter I'm going to have a set up something like this; adapater-www.pctoys.com/840556088547.html molex on/off switch-www.newegg.com/Product/Product.aspx molex splitter-www.crazypc.com/products/neon_wire_red-8430R.html Red EL Neon Wire-www.crazypc.com/products/82520U.html LED Meteor UV lights-and another light of some kind maybe a liquid cold cathode www.crazypc.com/products/8230B.html I believe the adapter will be able to power this, however I'm not sure as I've never used one before so any input is greatly appreciated. I also need to know whether the on/off switch will be able to control the whole string? Thank you

Topic by suitaroh 9 years ago


How does this CCFL inverter work? Answered

Hello, I have this CCFL (Cold Cathode Fluorescent Light) inverter from a scanner. it powers the scanner light. That's the schematic, but I can't see all the components very good, I'm sure about everything that's noted in the schematic, but I don't know the value of that capacitor between both collectors. It's that brown one from the picture. So the question is: How does this circuit work? I'm still trying to figure out how the transistors switch, it's really weird, because when I try recreating this on my breadbord it doesn't work. And why is the first coil shorted out? What I do know about this is that it has an output voltage (very low current, serveral micro amps) of 2 to 3kV. It also works at a very high frequency, about 30kHz I think, and it has a ferrite core transformer. The primary windings are very thick, and there are about 10 turns. the secondary has Many windings, a few thousand. The primary current is limited by the frequency (Xl = 2*Pi*f*L) so high frequency means high resistance of the coil, and that means a low current. now  how does the switching process work? and what's the use of the brown capacitor?

Question by DELETED_Electorials 8 years ago  |  last reply 4 years ago


Computer Drive Bay?

Hi all. I am looking to fill at least 2 of my 4 availible 5.26 inch drive bays in my "new" computer. I was thinking like maybe a fan comtroller... but thats a little boring for me. I want somthing really cool. I did consider a lcd... but its kind of expensive and well... just not... idk. I just dont really like that idea. I was thinking somthing lik a toaster. :D But really... i want something kool. i mean even somthing totally useless... I just wanna fill them. I did consider using 1/2/3 of them for resivours for a liquid cooling system... but thats a little hard 4 me rit now. I am on a budget. I already gotta pay lik 130-230 for a new mobo. But i still hav som monsy 2 spend on it. So, wat is the coolest 5.25 inch drive bay device u ever saw. I also have 2 3.5 inch ones for smaller things. Like floppy. :D In case ur wonderin, i hav a xion vantage case. I am usin lik 4 fans. 2 or 3 lite up. I will soon be adding cold cathodes. But anyway, u can see it in my forum topic that i will make once my pc is bak from shop. THANKS!

Question by sci4me 8 years ago  |  last reply 7 years ago


Exactly what components do i need to charge a bank of our four (or however many it takes!) 18650 batteries {we will be using a dynamo} with an LED to show that the batteries are being charged ?

(if needed ?)Hello & Good day to you all, Me and a friend have plans to build a miniaturized 'Rolling Road' platform for our RC 1/10th scale nitro cars!! What we both agreed on is that the Rolling Road platform is to be made out of acrylic and using skateboard bearings and other hardware, but we are completely stuck, we have an idea to add lights to the platform, the kind of cold-cathode tube lights that are for inside-pc-use... We want the tube lights to run from a rechargeable battery bank from the Rolling Road but incorporate a charging system "built-in" to the platform and a system based on renewable energy because as our cars are nitro powered, they will be turning the rollers of the platform for many hundreds of thousands of times and we wanted to harness that mechanical energy to charge the battery bank - in turn to operate the tube lights! We are both ok the structural aspect of building this rolling road platform but dont know where to start on fabricating an electronic set of components culminating into a sustaining system that produces (almost) free energy! The system must be able to run 4 sets of these tube lights, each tube light set is comprised of 2 tube lights each, so 8 tube lights in total ! The tube lights are rated at 12 volts. What our dreams are : (lol) - The system must collect the electric being made to charge a battery bank, - The system must have an LED 1 to only show the battery bank bank is being charged, - The system must have an LED 2 to show that the battery bank is fully charged, - ALSO ! if at all possible, include a simple row of 6 or 7 LED's (LED BANK?) to indicate how full/empty the battery-bank is & - Lastly, there must be a switch to switch off the circuit that charges the battery bank (when batteries are fully charged !) Ingredients: (what we DO have, lol) 20 x 18650 batteries Plenty of spare motors Lots of different grades of wire soldering skills a few switches 10 Pairs of 12v PC Tube lights (Both 4" & 12" ) Small to medium range of "ON Semiconductors" (Voltage Regulators) Max Input Voltage is 40v of one of these! What we dont have: - Knowledge of electronics! - LED's - Capacitors (if needed ?) - Resistors (if needed ?) - Transistors (if needed ?) - Semiconductors (if needed ?) - Diodes (if needed ?) - Help ! Please please please could anyone help us to even roughly 'sketch' a set of components that we could solder together, lol, a Circuit, lol x2!, so we can start ordering the needed items to enable us to make this miracle happen ?!!? But to make it idiot-proof (dumb-it-right-down for us!) and extremely simple circuit diagram, not the actual way you geniuses write em, if say to draw a semiconductor, i would draw a square then draw 3 lines coming out the bottom of it to show the legs of it! We were only-just able to follow the circuit diagram HERE - ONLY BECAUSE there was a picture of exactly how the circuit looked, in-real-life! So we followed the wires exactly to make the solder fume extractor but were only able to, again, because of the pics! please help! i feel like crying! lol ! We have both spent a few years trying to read electrical diagrams and we get lost very easily ! Is there even a way to dumb it down for us ??? Is there any hope ?!!?  lol A very-Many thanks in advance to all for reading this and even more for any help received !!!!

Topic by offtherails2010 7 years ago  |  last reply 7 years ago