Step-Up transformer HELP!!

I ripped apart one of those nice flashlight / black light things. You know, those florescent 6 inch black lights. Well, I was amazed to see it runs off 6V. Until i saw the transformer.

  • I have NO idea how many volts. My 500V multimeter said O.L (overload) so way over 500V
  • I'm not sure the connections after i .. Ripped it off. If i quickly rapid turn on the switch, it reads many voltage range off a 1.5V battery, but then goes to 0. Maybe hooked wrong?

--My GUESSING hookup (4-Pin transformer Square metal frame, and coils in middle)

--The flashlight

Any idea? :(

Picture of Step-Up transformer HELP!!
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-max-7 years ago

U need to get oscalation ( a relay wired up in self oscalation will do the trick and make a rough ac/dc voltage)  hers the relay circuit.

gmoon8 years ago
Usually, the connections for each coil are together on the same side of the transformer. (and you gotta feed inductors AC...If you hookup 1.5V DC, you'll see a spike, then nothing, even if connected correctly....) You might see a spike even if you hooked it up wrong, since the coils would be connected together in series (through the VOM), and complete a circuit.
Killa-X (author)  gmoon8 years ago
Thank you, I don't know anything more than you do about this transformer. Is it hooked on the right sides? (top bottom) or should it be (left right)? Also, Long time no see, Hows it been going :P And your right. I do get spikes then nothing even if its connected right.
gmoon Killa-X8 years ago
I'm here just about every day; I just don't have anything to say, everyday :P.

For every transformer I've seen, it's the two on the left together, and the two on the right together. Of course, there are lots of different types of inductors...some (autotransformers) share connections.

Use anything (homemade or not) that works... But any inductor needs change (the AC, or alternating current.) You see a spike because the magnetic field swells when you switch it on (and collapses when you switch off)...but if the field is static (not-changing) then no energy is transferred to the other coil.

If a static (DC charged) magnetic field could produce "free" energy, then we'd just wrap coils around permanent magnets and all the world's energy needs would be solved....

So you need some way (555, multivibrator, etc.) to create AC--for any inductor.

When I was a kid, people made spark generators with ignition coils, and used a toothed "contact wheel" to open and close a switch rapidly (the AC pulse.) Pretty crude, but it works....
Killa-X (author)  gmoon8 years ago
So your saying, if i had something to rapid switch it on and off, it would be the same as if i just did 1.5V to the transformer, but rapidly click it on and off. I could just hook up my old ATTINY2313 and run it over 8000 operations / sec...I use my ATMEGA644 now days :D Also.. The circuit it came on, has a few resistors..50V capacitor.. and a transistor...
gmoon Killa-X8 years ago
Yeah, that's it. To get more output current, you might need to use a transistor switch with the AVR pulse output (a 555 can handle about 10X as much current as an AVR.) I won't hazard a guess as to the optimum frequency for your inductor.... I'm a little surprised the HV dudes haven't shown up...TK? guyfrom7up? They probably have some practical suggestions....
Killa-X (author)  gmoon8 years ago
Yeah, ill try a fast switch.. Maybe you don't know, any more than me, But doesnt a 6-inch flourecent blacklight take a lot of power? I wonder if it's enough to actually make a tiny plasma spark like lighting globes... ooo...
Killa-X (author)  Killa-X8 years ago
Also, I can use a homebrew inductor right? You do mean those coils if im correct. I guess a coil from a 120V paper shredder motor wont work :) (I planed those coils for coilgun anyways So. AC inductor means 1.5V to inductor (coil around a metal bar) then to transformer?
Plasmana8 years ago