Flyback Transformer Tutorial

[electronicsandrobots]

You can make a plasma globe with a sphere chemical flask and the flyback

[Sillsy55]

"So, yea I pretty much burnt the entire piece to ashes" ahaha

[SpaceMonkey0315]

if i use a 2sc3040 will it work?

[HorizonDelta]

nice vid

[logycam10]

nice carbon ark from the paper

[dsupanga]

Just picked up a discarded pc monitor a while ago at the trash. So this transformer is dc.Time to figure out how to run a Tesla Coil with it.

[guruji243]

I did exactly same as this vid and heard a squeking sound on the tranformer but no arc happened to neither pins :( Maybe I did something wrong?

Thanks for sharing

[TheTranceMusicLover]

Can you make tutorial how to find output pins?

[omgitschrislol]

We have the same flyback

[deepcut66]

Hi thanks for this. How do i find out the pinouts of a flyback using only connectivity and resistance checks on a standard multimeter ? I'm sure i read of it years ago but i can't find it.

[j1gaboo123]

can you make a arc speaker now?

[delphinny]

do you know what model flyback this is? thanks!

[mathscirocks]

i don't understand. how do you find out which is the feedback coil and which is the primary?

[Masamuneblade7]

Bomberboy92, I am messing with this stuff now, and I got an oddball transformer from a computer monitor. First I messed with it while it was IN the screen, I discharged it and unplugged the suction cup, flipped the suction cup, and cut open the second red wire, alligator clipped it to a long wire and put it on a stick. I plugged it in and pressed power, and got 2inch arcs!! But they werent a plasma stream, they were like lightning strikes. What do I do to get a lightning stream?

[MrGerbilBrain]

@Masamuneblade7 you need to find the ground pin on the bottom of the flyback transformer and solder a wire onto that.

[Masamuneblade7]

@MrGerbilBrain Wouldnt that still get me just the regular lightning-like arcs? Want me to post a video?

[MrGerbilBrain]

@Masamuneblade7 to get thick arcs, you need to increase the input current to the transformer, to increase the current of the arc. or maybe the transformer secondary is shorting out inside, so most power is lost in the arc, making only teensy little arcs on the output.

[Masamuneblade7]

@MrGerbilBrain Current is AMPs though. I only have an output source that goes to 30 amps. And what about my Driver... Will additional AMPS harm a 10 volt transistor?

On the other hand... I've probably blown up about 7 of the transistors I've dug out of electronics. is there a specific list of serial number transistors I can use?

[king4allstars]

It's singing like a bird that arc

[negativeNance]

5:09 The "whining" is from the windings of the transformer vibrating, not from the transistor. I'm not sure what frequency you're using to drive the base of the transistors but usually, to avoid hearing the whine you either use a frequency above 20KHz or you can coat the windings in resin so that they don't move.

[ArbyTheElite]

damn i just came here to build one so i could build one for my plasma globe

[thumpervids]

instead of using a battery, can you use 240AC from the mains?

[ConnorY71]

@thumpervids don't use 240 volts I think its too high. I use a step down transformer to decrease the voltage and a rectifier (with a capacitor) to convert the ac into dc whenever i want to use mains instead of a battery.

[Masamuneblade7]

@thumpervids OHHH jesus thumper, I got lightning strikes for return using 240...

[freitasnetuno]

The 555 driver circuit does the same thing? Can i use a 220vac-9vdc transformer?

[mikey0186]

hey, doesn't transformers only use AC current??

[RRdigy]

I have a problem. I think that i made the circuit for my flyback transformer right but theres somethin wrong-It gives out only 19 volts when i use a 9 volt battery! there are spark but they are only about half a milimeter long. Why it doesn't make normal sparks and big volts?

[pietzeekoe]

Did you try the circuit with a MJ15003?

[Bomberboy92]

@pietzeekoe nope.. 

[Britishdude1]

about how many volts/amps does it put out?

[pietzeekoe]

is the mica inulation really needed? And will a 9v block arc on the inside/cause problems?

[Bomberboy92]

@pietzeekoe the Mica Insulator IS really needed as the Transistor case itself acts as the Base leg of the transistor, and contact with the metal heatsink might cause interference. however, the circuit i use doesnt heat up the transistor at all so i wont even bother with the heatsink if i were you.

[AgentDexter47]

an if you wonder how I found out these pins without knowing primary pins - I wound a external coil and shorted it few times on a battery to see wich pin will shock me XD

[AgentDexter47]

lool we have so much same equipment - i have same volt meter, 12 volt battery similar transformer and I have found some 2n3055 laying around

and also I have one problem - on my transformer my multimeter shows out of 10 pins, starting clockwise from the core - first 3 pins are shorted, next 2 are shorted, and next 4 are shorted, and the 10th is hv ground

how do I kno whch is the primar and wich is the feedback?

[Bomberboy92]

@AgentDexter47 Hahah LOL. the 3 Pins would probabaly be the feedback, experiment usinbg diff combinations of those. the next 2 should be the primary, and the 4 are probably some other coil, which you could attempt to get a feedback from should the 3 not work.

[AgentDexter47]

@Bomberboy92

from those 3 pis - how did you know wich two were right ones?

[Bomberboy92]

@AgentDexter47 keep trying different combinations till you here the sound from the tranformer.

[deepcut66]

Thank you very much. Good tutorial.

[Bomberboy92]

@deepcut66 thanks man,

[rockman378]

@Bomberboy92 i have the same flyback transformer can you please give give the schematic on wich pins are feedback and what-not please...

coleton

[frappyliscius]

i'm sorta new to this whole stuff, so could you please tell me which pair of wires is the feedback and which is the primary? there's one pair right besides the 10 pins and the other ones on one side of the transformer.

[Bomberboy92]

@frappyliscius on my flyback, the wires that i soldered on at the 9 and 10 oclock positions are the primary coils wires, and the other 2 (12 and 1 oclock) are feedback coils.

[waasdorp29]

you should make a new video of were to get the materials

[iamzid]

i assume that different flyback transformers would have different volt/amp ratings. if that is the case, then how would i tell what a particular flyback is rated for?

[Bomberboy92]

@iamzid i honestly have no idea, but from thwat i've read, newer flybacks like the one i used can't produce the same output as older models such as ones used in B&W Tvs. best start low and increase the power

[hipnocesar]

is there any safe way to make an electric shock collar for dogs, or a taser weapon without killing or hurting anybody using this kind of circuit? I mean, how much KV and mA will drop this?

[Grundalizer]

If I take apart a CRT or Microwave...do I have to worry about stored charge in a flyback transformer or anything, or only in the capacitor? I know what a capacitor looks like but I'm a little nervous of just shorting out two wires somewhere in the circuit the capacitor feeds

[Bomberboy92]

@Grundalizer if i were you i'd take some precautions, but the monitor i used was dead for a while, and was lying unplugged for about a month or so before i got around to dissasembling it, and removing wasnt much of an issue.

[miniferretti1]

how many volts input for de first?

[Bomberboy92]

@miniferretti1 6volts