I took apart a hologram t.v (the ones with projection) and i cannot find a flyback transformer. give me a pic.
Question by knektek | last reply
I have an urge to play with high voltage. Maybe a Jacobs' Ladder, maybe a plasma speaker, maybe just make sparks and burn myself. Does the make / model of flyback transformer matter? Or do they all connect the same way? For instance, would you recommend this model?
Question by Kiteman | last reply
I really want a old flyback transformer for my high voltage projects, but I don't know where to get one. I tried to get one from my local TV repair shop, but they did not have any, only new modern flyback transformers and I don't want that kind of transformer. So if you have any old functional flyback transformers that you don't want anymore, I would really want to buy them from you, and I will pay for the postage price. I will buy modern flyback transformers if you are trying to give it away for a very cheap price or for free (I will still pay for the postage price). Please respond to me if you live in UK, if you don't live in UK, please don't respond to me because I cannot afford such high postage (shipping) bill.
Topic by Plasmana | last reply
I was looking at this page on flybacks, and I was reading about the transistors, when I realized that I don't know anything about picking transistors out. I'm an electronics noob, what can I say. Would these work? The flyback is going to be from an OLD computer monitor. I need help.
Topic by John Smith | last reply
I want to drive a flyback i have laying around i have one of these modules: http://www.ebay.com/itm/221623454225?_trksid=p2060353.m2749.l2649&ssPageName;=STRK%3AMEBIDX%3AIT which can generate 2khz square wave and i want it to drive a mosfet irfp250n which will drive the flyback the problem is the flyback normally runs at 16-25khz and i am doubtful whether the 2khz will to enough to reach the resonance of the transformer Will it work?
Question by TheGreatResistor | last reply
I have recently dismantled an old CRT monitor i have had lying around for ages to get the flyback transformer. I have been trying to get the correct pins to using methods found on the internet none of which have seemed to work i have found what should be the primary coil and have applied the current and placed the high voltage output in front of each pin to try and find the high voltage ground, this has not worked so i have applied the current to all of the pins in every combination and still i am unable to get it to work. Please help me.
Question by Hav0c | last reply
My son wants to do the flyback transformer driver but we can't seem to find a flyback transformer. Is there a safe replacement or substitute?
Topic by ann.bragonje | last reply
Hi. I am trying to build a Tesla Coil, and there are few thins I'd like to know. First, I built this PWM (made a few modifications, IRF530 MOSFET and 10nF ceramic caps instead) and connected it to a self wound primary of my fuh29A001V flyback, and it works perfectly, sparks and stuff. Can this power my Tesla Coil? Next, if it can work, how do I calculate capacitance needed for my tank capacitor? Miloš
Question by Mvtnns
I've been kicking myself for months now trying to get my flybacks to operate. It seems that no matter what driver I build, or how carefully I assemble it, the only thing I get is silence. Even the simple 2n3055 driver does not work for me. I've checked the transistors, they appear to be fine. I have no idea what to do. Any ideas?
Question by iTixle | last reply
I have four flyback transformers for sale, I have marked where the ground is for the HV on them. they are in a fine condition. I would like to get a few of them off the shelfs, they are taking up too much room. I want to get $20 for them and I will also ship them any where in the united states for free.
Topic by inductionheat! | last reply
I am having problems with the flyback transformer. For primer on where I am at, following the tutorial to locate the 0v pin the voltage was win the specified range. The flyback is from a old monitor that was monochrome but was still working. No datasheet could be obtained. 10 pins if it matters. I am following the struct on using the single transistor driver. Specifically a 2n3055 from radio shack. Lets pretend i wouldn't waste your time if i didn't triple quadruple check the wiring first. using 24v dc power supply schematic and page i based my driver on. i am not getting the high pitched noise from the flyback. i have 5w 220 resistor and a 5w 27 resistor . my resistance ratio is important. correct? since there is a voltage divider there. i know its vague but can someone give me some direction to work out my problems
Topic by Chingasman | last reply
Hello, I'd like to request someone to share their knowledge about their "flyback" knowledge or experiences with me since I'm having trouble finding the primary coil pins with my flyback transformer. I'm constructing my own HV power supply and I decided to go through this tutorial. I've read much on the web and found the 0v output pin of my flyback. The problem is .. I couldn't find the primary and secondary since I'm using an analog multimeter and the tutorials on the web are all digital.. When I test the pins with my multimeter set to ohm range of x1, I do not get a pair of 1 ohm pins but instead I got the result of "Continuity" when I test on following pins, they seems to be connected but none of the pins show to 1 ohm.. and thus I've adjust the Ohm Adjustment. The results are Continuity 1 : 1,2,6,8 Continuity 2 : 3,4,7,10 No Continuity: 5,9 Pin no 5 is 0v output.. I've attached the pin number diagram at photos... my drawing and actual pins.. Have you got any idea to find out the primary coil? I've also attach my driver from CFL.. Thanks
Topic by _π | last reply
Hello, I am confused with this flyback transformer I have. I have a pulsed DC input on the primary coil (pulses from 0 to 15V) and that creates high voltage in the secondary coil. When I connect that input in the opposite direction (wrong polarity) I don't get high voltage any more. The possible explanation for this is that the primary coil has a diode in series with it. Now, I'm confused by this because I tested if there actually Was a diode in there (by connecting a DC supply and a DC motor, in series with the coil) and the motor always works! (also tested with a halogen light) I put the coil in series with the motor to test if there is a diode inside. If there would be one inside, the motor should not work in one of the two cases, when I switch the pins of the primary coil. So, as the results of the test tell me: there is no diode in series with the primary coil. could it be possible that there is a diode in parallel with the primary coil? If that's not possible, how come the flyback is not working when I connect the polarity incorrectly? Could someone please help me out with this? Thanks, Electorials
Question by DELETED_Electorials | last reply
Hello! I'm getting a bit tired of playing with disposable cameras... there's only so much you can do with them. Well, I acquired a CRT, presumably from an oscilloscope, a couple of weeks ago and I want to get the flyback out of it (and figure out how to use it) so I can make a Jacob's ladder or Tesla coil. Does anyone have any ideas on how to proceed? Here are some pictures.
Topic by SirCheez | last reply
Hi, im looking for flyback transformers of any kind. since plasmana wants only older styles ill take all the modern ones if anyone has any. i would be willing to pay for shipping and the transformer if the price is within reason. these are the type of transformers found in old crt tv's (the big ones) if anyones interested please post a comment or pm me Thanks
Topic by budsiskos | last reply
Hi every one, I've been working for several weeks on a diagram of flyback driver referring to this video to get an electric arc which can handle a day turned on: http://www.youtube.com/watch?v=DE4GfpOSWW0 Here is the assembly that the author gave me : http://st-ware.com/files/misc/smallgen_en.png And here is the assembly I'm working on : http://alexmira.fr/images/schema00.jpg The RC1 capacitor is either a 630V 220nF MKP is a 1uF 630V. I've done and redone it on my breadboard but impossible to get anything. Could you help me to acheive this or tell me what are my mistakes. Thank you in advance.
Topic by exesnot | last reply
Hi, I made a flyback driver from a 555 timer 2 days ago and now its not working. I think the flyback broke but i dont know. I ran the driver with 6 volts at first but got tired of the 1 cm sparks so I used 12 volts instead and it stopped working. I left it alone for a while, and when i tested it again, it worked again. Now its not working again and i think the flyback broke this time but im not sure.
Question by joeismydad | last reply
I've been reading up on Jacob ladders and tesla coils for a while now, and decided to try to make a Jacob ladder (the tesla coil just looks scary and advanced) I've taken a part an old CRT. And I was wondering if you could tell me if it looks usable. I'm wondering slightly if I broke it when I removed it from the 'plate' it was stuck in. Pictures will show what I mean. Sorry about the bad focus on the pictures. Taken with a phone, and it was slightly too dark for it to be able to take good pictures. The brown cables looks like it's just fast in the flyback transformer, but I did not remove it. I tried to get a good picture of the text that was on in case it means anything to anyone. Also, what I can gather by looking at this is that the red cable is the high voltage cable, and the low(er) voltage cable is either the grey, or white one. - Is that correct? Thank you very much for your attention, and thanks for any replies. And this site is amazing. I'm just amazed at how creative people are. Oh, and please let me know if I posted this in the wrong category Zaek.
Question by Zaek | last reply
I am running a flyback transformer with a 2n3055 transistor which works perfectly giving me 2cm arcs but i get a weird smell ever time i run it for more than 10 sec i think its ozone is it lethal im using a 12v 2A power supply
Question by TheGreatResistor | last reply
So i've been into hv stuff for years,currently engineering undergraduate, just never did anything practical. So recently we got a new microwave, therefore old microwave= junkyard ^_^. Anyway, i acquired a MOT i also took the capacitor and diode, and the magnetron (never know when you could crave instant cooked meat ^_^ kidding). Then a few days later (last week) someone left a computer monitor outside on the sidewalk, which equals source of flyback ^_^. clearly someone up there wants me to play around with hv (or is it someone down there..?) and so thats how i came into possession of a flyback. i could have had one a while back, we had a big tv, which had one of the big old flybacks which are way better than modern ones, but this is before i knew about flybacks and so i dismissed it as some large junk...to this day im still slapping my forehead over the fact that i let that go... Naturally, i have a few questions: 1. I hooked up the mot to mains (deadly i know) but the arcs were insane. i tried ballasting it with a cfl bulb, 15 watts, however, when connected the mot did nothing. touching the hv to ground only made the cfl brighter. why? 2. i pulled the flyback with the circuit, i actually took out the whole board from the computer monitor. how can i use this as a driver? i know i could pull components out and make one but seems to me whats already there would be good enough. 3. Found out i can use a cfl to drive the flyback, can i also use this for the mot? one other thing, i was thinking of using the mains transformer (torriodal transformer) from the monitor to power the mot and/or flyback, using it as a step-up or step-down transformer. Is this possible with the flyback? Thanks, and sorry for the loong question im just excited ^_^
Question by fire_fist_ace | last reply
Hi all, I have taken apart an old color crt monitor which was not working and I don't know how I could reuse the crt from it, I have a feeling it still works and that the problem was the flyback transformer, and would NOT like to throw away the crt. I would like to know if anyone knows how to drive a crt, without having to do something TOO complicated, I will be happy with very minimal results such as just a blue color being displayed, or such, as long as something gets to appear on the screen. Then I can use the x and y axis controls (the little plastic carrier on the neck of the crt) to control the image sizes. I heard that you have to find out which pins of the crt are for the filament and provide around 6V to it, but how do you find this out? Also if someone knows how I can test the flyback to make sure that is the problem, it would be helpful. Any help is appreciated. Thanks in advance, P.S. Attached is a picture of the crt.
Topic by drresearch | last reply
Hi! I scrounged and old crt flyback and I have set up a small transistor-driven oscillator to put power into the primary. It works too, but I don't know if the output is AC or DC. I think it may have a rectifier in it, but I'm not sure. Is there an easy test to determine whether it is AC or DC? I'm planning to use it for a tesla coil, but I want to know the output wave form first. Some sort of pulsed DC would as be acceptable for my uses as well. Does anyone know what I can do to determine the output wave? Thanks! (PS: I don't have an oscilloscope)
Question by transistorguy | last reply
I am looking for a flyback transformer for my experiments. A friend suggested me to crack open an old crt monitor. I don't have any idea what it looks like. Can anyone help me?
Question by S0uraV_DAS | last reply
I just took apart an old monitor for some high-voltage experiments, but I am wondering how I should feed the voltage back to the Flyback transformer. there are 3 wires, the one with the suction cup (the 10,000 volt wire), a white one and a red one. should I use the white or the red to finish the circuit? or is it enough to connect it to the ground? or doesn't it even matter?
Question by kirdaiht | last reply
I have a electronic ballast and a flyback . I am having problems finding the primary coil pins of FBT because i dont have a multimeter. so i was just thinking that can i wind two ballast Vout wire around the flyback primary (the metallic structure , or whatever you call it) there are total 6 wires on the E-ballast. two are for input and 4 for output. the output wires are in sets of grey and white wires. I was thinking that i will take one grey wire and wind it around the fbt primary(metal thing) and then connect it back to white wire. is this correct? also can i wound a feedback coil from the other 2 wires? PLEASE ANSWER....................ANY HELP WILL BE APPRECIATED. : )
Question by SHREYANSH_HV | last reply
Hello, everyone. I have a picture of the flyback transformer pinout on the circuit board. I was wondering if someone could confirm that the +14v and -14v are for the primary coils and the GND is 0v of the secondary. Thanks. Any other info is very much welcome =) picture: http://www.flickr.com/photos/100764000@N03/9587380434/
Question by raccoondog | last reply
For experimental purposes i want to remove the ferrite core from a flyback transformer. I want to be able to remove it without damaging the primary or secondary windings. I don't care if the core is ruined. Someone suggested boiling the transformer in water. Has this been successfully done or is this an untried suggestion?
Question by Blake | last reply
Using garbage and no stuff like 805868 transistors or whatever you call that. it shiould be not form a tv crt
Question | last reply
Its just that I have been scouring the web in search of a schematic with details specifying particular components, to no avail. Is there a schematic out there that shows the integration of a flyback transformer specifically?
Question by Phildo1024 | last reply
Hi, I have dc half wave modern type DST flyback from a computer CRT and put out around 30kv. I wonder: Is there an inbuilt voltage doubler/tripler in these modern half-wave DC DST flyback or just a inbuilt diode? I became every confused from very contradiction info. Why I ask? I want to know as well as I would want to build a multiplier for the flyback. I know mine isn't the old AC type but the DST should be a DC pulsed ...The flyback I have just looks like these typoical modern DST ones here: http://www.imagebam.com/image/b88cbf268367234 . Your help would be tremendously relieving for me. I have been struggling to find out for a while now... Thanks a lot
Question by leviterande | last reply
. the model is a sampo FEC061 pulled from an old toshiba CRT monitor. thanks greatly to any one who can help it is much appreciated.
Question by blacjack1 | last reply
My flyback transformer has 9 pins at the bottem and is a "L40B02510 MSKK SANYO" I was hoping that i couuld just attach the + to one pin and the - to another pin (using one 9 volt battery) then add a ground to another pin.But im sure its not that easy if it is please tell what pins to use. I dont have a voltmeter to find the primary and secondary. I really need help and please dont send me link that will have me searching all over the internet i have spent weeks tyring to get this to work and nothing works.
Question by talbayaty | last reply
I want to make a flyback driver, i need inductor 200 uH
Question by Rendydevara | last reply
Ok, i have this transformer that i pulled out of a mac computer a couple years ago, i dont have it with me nut i think its a flyback. If it is, could i just hook it up to a battery and capacitor to make a charger or do i have to build some sort of modulator or switcher? Almost anything helps, thanks.
Question by budhaztm | last reply
Question by danydady | last reply
While working and revising my flyback driver design, I had one of the 1N4148 diodes that I was using as protection get cooked! (it seemed to fail short circuit) I have not tested to see if the MOSFET survived yet. Obviously the diode needs to react fast and handle avalanching energy well. Any suggestions? are some beefy schottky diodes suitable? Also, does making any ordinary diode go into that avalanche or zener reverse breakdown region cause it to potentially lock up and conduct for a period longer than the EMF spikes I'm dealing with? Or with any sort of hysteresis (like when using neon lamps)? Originally my wimpy glass 1N4148 diodes was wired in parallel directly across the MOSFET drain and source reverse biased. However, carefully examining this tesla coil schematic,it appears that there is both a forward biased diode in series with the MOSFETs, and another reverse biased diode(s) in parallel across the MOSFET & diode. It does not look like a bad idea given one the reverse biased diodes can shunt EMF spikes that are too large while the other isolates them from the MOSFET. My only concern is how lossy that would be at 12V operation.
Question by -max- | last reply
What's the right transistor for an old Flyback transformers??
Question by ouwelou | last reply
Can i use N channel MOSFET for a flyback transformer?
Question by ouwelou | last reply
Can Flyback Transformer drive by Induction Oven? I thing Induction Oven can create 20kHz-40kHz. http://en.wikipedia.org/wiki/Induction_cooking And Flyback Transformer need high frequency to work. I thing waveform is not a problem. I used plasma ball driver , CFL ballast driver and Halogen Transformer as my FBT driver . And work well.
Question by james34602 | last reply
I am simulating the following model but i could not find the schematic of the flyback transformer what is actually inside the LOPT.. can anyone please provide me the same... https://www.instructables.com/id/MAKE-A-HIGH-VOLTAGE-SUPPLY-IN-5-MINUTES/?ALLSTEPS
Question by kanni1303 | last reply
I am wondering on how to remove the flyback from modern tv's. On another note, is it possible that i could have blown the diode in the flyback because of driving it too hard?
Question by Electronics111 | last reply