Need help with flyback transformer project.

[Makke]

Sure, the primary then acts like a resistor and dissipates energy, but that is nearly a short-circuit because the resistance is probably very low.
That´s why you use a switching circuit.

I want to kindly advise you again to make sure that you have familiarized yourself with safety issues of high voltage transformers to avoid injuries.

Yeah about that.. The voltage is actually very high, and i do not want to get hurt.. Im thinking about dropping this project, but the nice arcs looks so temptating..

I guess ill drop the project.. Thanks for the help though, you'v all been a great amount of help!. Maybe you might know any other projects that would interest me?

[Xenomorph]

Yeah about that.. The voltage is actually very high, and i do not want to get hurt.. Im thinking about dropping this project, but the nice arcs looks so temptating..

I guess ill drop the project.. Thanks for the help though, you'v all been a great amount of help!. Maybe you might know any other projects that would interest me?

Yes, look into this thread. You will be able to produce arcs (what you wanted) but they do not hurt, because these systems use very little power : http://www.energeticforum.com/renewa...-variants.html

Here a youtube video, so you can see the arc : YouTube - Bedini SEC Plasma Propulsion

[Makke]

Yes, look into this thread. You will be able to produce arcs (what you wanted) but they do not hurt, because these systems use very little power : http://www.energeticforum.com/renewa...-variants.html

Here a youtube video, so you can see the arc : YouTube - Bedini SEC Plasma Propulsion

Hrm! Looks awsome, Do you have any experience with these? Do you think you could help me?
It sure looks awsome!..

[nvisser]

Makke
Don't get discouraged.
The link that Cody post from Naudin is brilliant.
Always use rubber gloves when working with high voltage although it will not stop the spark .
I was woken up numerous times by the anode voltage on crt monitors . I repaired the things for about 18 years.
I think the spark gap is the answer to lots of our energy needs although I am only in the beginning of my research. I first tried with a car coil but did not get good results
Go look at this thread why I want to use it.

http://www.energeticforum.com/renewable-energy/5749-spark-gaps-missing-link.html

The link posted by Xenomorph about flybacks mentions adding a full wave rectifier to make the output DC, which can than be used to charge capacitors, etc...
From a lot of cap in parallel charged to a 1000v or more you can apparently drive a many turns coil through a spark gap to drive a motor.
What I am trying to say is go on with this spark gap experiments and I think you will find ways to make lots of this Bedini projects like the Tesla switch and the free energy generator (Watson motor) work.

[cody]

The transformers Makke has already have a diode built into them, its not full wave but is usually part of a voltage multiplier circuit. So it already is spitting out DC.

Makke dont get discouraged. As long as you have some common sense you should be fine. If you get shocked you will probally survive, but i would try to avoid that. You need to make some kind of oscillator circuit if you want to continue.

I made a crappy drawing here but you should be able to get the point. This is probably the easiest way your going to find to make the thing. You need to locate the primary positive and negative terminals on the bottom, i believe you have already done this. You will also see lots of other pins on the bottom of the transformer, these are other secondary coils. Use your continuity tester on a multimeter to find a pair of terminals that are connected, i used a pair with a higher resistance reading, i beleive it was around 3 ohms. You might need to do a little shopping to get all the parts, should be pretty cheap. The transistor i suggest has a built in transient diode, its good for these applications. Once you get it hooked up flip the switch and see if it arcs from the HV lead to the HV ground, adjust the pot and see if anything happens. If you get nothing then you have the secondary terminals hooked up backwards, change them and try again. Then your done. Start with 12V. I filled the bottom of my transformer with silicone to stop the arcing that occures between terminals when you are pushing it hard. Good luck!

[Makke]

The transformers Makke has already have a diode built into them, its not full wave but is usually part of a voltage multiplier circuit. So it already is spitting out DC.

Makke dont get discouraged. As long as you have some common sense you should be fine. If you get shocked you will probally survive, but i would try to avoid that. You need to make some kind of oscillator circuit if you want to continue.

I made a crappy drawing here but you should be able to get the point. This is probably the easiest way your going to find to make the thing. You need to locate the primary positive and negative terminals on the bottom, i believe you have already done this. You will also see lots of other pins on the bottom of the transformer, these are other secondary coils. Use your continuity tester on a multimeter to find a pair of terminals that are connected, i used a pair with a higher resistance reading, i beleive it was around 3 ohms. You might need to do a little shopping to get all the parts, should be pretty cheap. The transistor i suggest has a built in transient diode, its good for these applications. Once you get it hooked up flip the switch and see if it arcs from the HV lead to the HV ground, adjust the pot and see if anything happens. If you get nothing then you have the secondary terminals hooked up backwards, change them and try again. Then your done. Start with 12V. I filled the bottom of my transformer with silicone to stop the arcing that occures between terminals when you are pushing it hard. Good luck.

*IMAGE*

Yeah, i think i gotcha. The scheme you drew looks fairly simple , but the problem so isn't for me to understand the scheme, but to get the stuff.. As i said earlier there are no stores that sell these kind of stuff near by and i currently don't own a bank card.. I will get one later on.

I'm also missing a good powersupply, but there shouldn't be to hard to find one around here!

I also have a question, is the secondary the output? or is it the second coil?. When people say the secondary coil it confuses me and makes me think there are two coils.. Its rather hard to explain what im trying to say with the english i know.

[Xenomorph]

@Makke:

Grab a scrap PC power supply from the junk yard or go to a nearby Computer store that repairs computers and ask them if they have any broken power supplies for PCs. There is ALL the parts inside you need.
Solder out the big transistors, make sure by googling their numbers that they are bipolar and NOT MOSFETs and the resistors you also find inside.
Even the CRT monitor that you scavanged the flyback from could contain some transistors. Any power transistor would probably do the job.

Good Luck!

[SuperCaviTationIstic]

I have an other idea that might help anyone who wants winds a primary on the core of a flyback rather than using the original one.

Leedskalnin explained that the proper way to create an electromagnet is to energize it from the center out in both directions. I believe he said the negative should be in the middle.
Wind 2 equal and opposite windings, with the negative being the center tap and the positive being BOTH outer taps.
Electrons hate being around themselves, and if you introduce them in the middle, they will shoot toward the ends away from each other with greater ease.

[Makke]

@Makke:

Grab a scrap PC power supply from the junk yard or go to a nearby Computer store that repairs computers and ask them if they have any broken power supplies for PCs. There is ALL the parts inside you need.
Solder out the big transistors, make sure by googling their numbers that they are bipolar and NOT MOSFETs and the resistors you also find inside.
Even the CRT monitor that you scavanged the flyback from could contain some transistors. Any power transistor would probably do the job.

Good Luck!

Yeah, i have already searched some of the parts i got in my room (about 3broken monitors, a dvd and so on..)
I have already taken out 2transistors laying on my desk, im not sure that they are bipolar, but im going to check it out now. And for the fuse i only got a 2A 0,25V fuse. Would any kind of resistance do it? small or big?

Does anyone know a good page to get information on etc transistors and resistors? google doesn't seam to help alot.

Edit: Okay i was playing with the Ohm reader i got, and i just found two more pins that have a little more resistance than the pins i now think are my main coil input pins..
is this the second of the first coil?.. Or am i still not understanding what you guys mean with the second coil? is the second coil the output?, or is it a second input?

[Xenomorph]

Yeah, i have already searched some of the parts i got in my room (about 3broken monitors, a dvd and so on..)
I have already taken out 2transistors laying on my desk, im not sure that they are bipolar, but im going to check it out now. And for the fuse i only got a 2A 0,25V fuse. Would any kind of resistance do it? small or big?

Does anyone know a good page to get information on etc transistors and resistors? google doesn't seam to help alot.

Check this for resistors : Graphical Resistance Calculator

and just type in the name of the transistor into google for example "2N3055"

The resistors should have a higher wattage like 1-5 W

You might also get away with smaller ones if you dont run the system for too long, so they burn up.

[nvisser]

ALLDATASHEET.COM - Datasheet search site, Datasheet search site for Electronic Components and Semiconductors and other semiconductors.
The big transistor that drives the flyback in the monitor will work.

[Makke]

ALLDATASHEET.COM - Datasheet search site, Datasheet search site for Electronic Components and Semiconductors and other semiconductors.
The big transistor that drives the flyback in the monitor will work.

Yeah thanks alot, i just found it. It was right next to where the flyback used to sit

[Makke]

Check this for resistors : Graphical Resistance Calculator

and just type in the name of the transistor into google for example "2N3055"

The resistors should have a higher wattage like 1-5 W

You might also get away with smaller ones if you dont run the system for too long, so they burn up.

Thanks alot, the calculator really helped. If 2.2Kohms is about 1.2W then i have 2 resistances with 1.2W each, that should do it. Right?..

wait thats not right, where did i get that from? ..

[Xenomorph]

Standard resistors are usually only 0.25W/0.5W . So you can also parallel a few to spread the current, but that needs a special calculation then:
PARALLEL RESISTOR CALCULATOR

The thick ones on the board are the ones you are looking for

[Makke]

Standard resistors are usually only 0.25W/0.5W . So you can also parallel a few to spread the current, but that needs a special calculation then:
PARALLEL RESISTOR CALCULATOR

The thick ones on the board are the ones you are looking for

*IMAGE*

I see now, thanks for clearing that one out!.

The best i have found are big carbon resistors at 2.2Kohms, is that good to go?