Testing a TINY little CCFL driver for laptop displays. 

I'd look into using a voltage multiplier directly from 120vac. It wouldn't be the safest but as one of your subscribers I'm sure you can handle it.

@@eDoc2020 of

hmm

There are lots of CCFL drivers on eBay designed for driving those tubes.

It depends on the voltage and control signal provided by the main PCB.

If you search my videos for CCFL you'll find one about the drivers and those signals.

first try ground, if it doesn't respond give it 3.3v or 5v (btw ,not qualified to give you advice, that's just what i would do)

could be the cause of my failure the size of the cables? i'm usin a thin cables like awg 24 cable

What length and diameter is the lamp?

@@bigclivedotcom Hi, thank you so much for answer, i have two chice, one it's 445mm x 2,4mm and the other it's 350mm x 2,4 mm

It should at least drive the short tube. You may have to play with the enable pins. If it's out of a specific piece of equipment it may require control data

@@bigclivedotcom ok, thnks agin for answer, the inventer it's a universal inverter like the one that you are using in the video, it has four pins, maybe i have to try 5v on the switch pin? Do you know how could i wire the "on" pin using two source 12v/5v?

Backlight LEDs need a suitable driver available from eBay. It boosts the voltage and current regulates it.

@@bigclivedotcom hmmm LCD its broken, I just want to convert into a lamp/light.. i tried also 13v no sign of luck,, brand vertu monitor..

If the monitor has LED backlight, do NOT use a CCFL driver PCB. You can use CCFL driver if the monitor has a CCFL backlight! Also be aware that this driver PCB only drives one CCFL tube, which is par for the course for many lower-density laptop screens, but not nearly enough for a PC monitor. Typical is 4 CCFL tubes, two on the top edge and two on the bottom. I suppose you could wire two tubes in series, but the assembly would be much less safe and would need special precautions. Oh something to keep in mind, CCFL driver can generate voltages well in excess of 1000V, which is quite lethal. It'll generate as much voltage as it has to, to make up the desired drive current. In either case, the monitor PSU and backlight drive PCB has a 12V point that you can feed externally. However you also then need to supply a little voltage to whatever pin is needed to undim or turn it on. Might take some effort to figure out which. If it's old enough, you're guaranteed to find the schematic to the PCBs in the service manual for some other monitor that uses the same PCB, any given PCB has shown up in monitors by a dozen brands! I can help you with the reverse engineering if need be. So how much of the monitor is broken? Did you break the panel and is the rest working? Other options, PSU/inverter can be dead, or backlight tubes or LEDs can be dead. Service manual and behaviour of the monitor can give some clues.

Some can do it. But it's cheap to get ozone modules on eBay.

@@bigclivedotcom thanks, I just tried my one, the main problem seems to be that it stops when resistance is to high and has to be restarted. A small neon bulb shines well (not as bright as mercury vapor and doesn't burn out although it's small, because ionised neon doesn't conduct so good). When I disconnected 1 electrode and instead connected some wire around the bulb, it glows too, smells like ozone, but turns off after a couple of seconds.

@@crescendo7357 Only a very small one. But things do become more intresting when you hook a voltage multiplyer to them.

@@crescendo7357 No probs, don't go doing naughty things with it. I used mine for powering a night vision tube, the sparks were quite long. But building a tazer is stupidly easy.

It might be a proprietary connector, but search my videos for CCFL to see videos about various drivers.

It will vary between intended application, but they often have a series capacitor and act like a current limited supply for a wide range of tubes.