Help me survive: / ludicscience A very simple SSTC based on the slayer exciter circuit (first developed by GBluer) is shown and construction instructions are given.
Thanks Ludic for sharing this. It inspired me an my mates to recreate your circuit then boost it with larger secondary, copper tube primary, higher rated transistor and high voltage DC supply for university project. We can get a carona and now put audio through it using a mosfet as a controled interrupter switch. The secondary feedback makes this circuit unique and the blocking oscillator concept is cool to think of. Great stuff!
This is very similar to the circuit used on those neon mugs, although be warned that like all high frequency RF devices it can mess with touch pads and possibly damage sensitive devices like pendrives if you get too close.
Thank you so much! I just finished my first attempt, and it works! I had to use the core from a RF choke to make the secondary coil, and could only fit about 120 or so turns of the magnet wire I had available ( from DC motor), but it works! It has lit up an led I have attached to a wire coil, and makes my old "touch lamp" go on / off at around 2 inches. I thank you again , and look forward to tinkering with this concept for future projects.
You are amazing and your channel is amazing. I like to DIY and near about all the time i have success with the projects you publish. It is because you guide the viewer so well and do not over look small details. Thank You!.
1.Can the turns in the secondary winding overlap each other? 2.What wire should be used in the primary winding? will ordinary copper wire will do? 3. The transistor heated up in less than 10 seconds, can I increase the resistor value? What would you recommend? Thank you so much!
+Kristian Brent Erwin Arugay 1. No, they should not. 2. Ordinary copper wire will do. 3. Is it working? If so, what are you powering it with? A 9V power supply can put out a lot more current than a 9V battery. A TO-92 package cannot handle much power. A 2N2222A is rated at about 500mW. Raising the resistor will not help, it is only there to start the oscillator. If it is not working and it is getting hot, you have the transistor wired incorrectly and it is probably damaged now. Even different manufacturers using the same part number may use different pinouts.
What an Elegant (and Very Relevant) demo again! Thanks for Being Around and Spreading your Creativity and Love For Mankind! You've Really have shown something Most Relevant indeed here which may have in a near future Very Appreciated Nice Consequences! :) :) :) :)
Thank you! I would suggest a full brigde driver with a flyback transformer, something along these lines: kaizerpowerelectronics.dk/high-voltage/tl494-flyback-driver/
dude i guess you should show all componets and how to build it so i can understand it better. so can you plz make a video of building a whole thing. and sorry for my bad english because that is not my first language.
i would really like a step by step guide pls ... im trying to do it for a school project and i cant understand some stuff so a full step by step would be nice pls
that is true just explain making secondry coil is not perfect insctruction to make that if you build this really all componet's making prosses must be show because without it. nothing we can do
Thank you for all your input to my questions. 5 mm diameter long ferrite rods are hard to find but I did find short 10 mm long sections. Have the rest of the components to build. Have a super idea as to how to make a game out of the tiny setup
I have a question regarding the secondary coil if you could answers it please. When the negative is connected to the emitter the transistor acts like it is shorted out and the led doesn't light up. Is there a specific gauge of wire for the secondary coil ? And is the led marked in correctly on the schematic ?
Can you tell the reason behind working of transformer with DC?... I mean you supplied 9v DC so transformer not work so how you get High Voltages on secondary? Also I want to know that are you using Any kind of oscillation setup with transistor due to which sine wave ( ac ) generated to run transformer???
Very well done! I have known about Gary's (Slayer) device for several years but, you made this very simple to replicate so now I will finally build one. Thanks, Bill
Since the author conveniently chose to leave it out, can anyone explain how this circuit is supposed to work? Has anyone else built it to get the same results?
We fully understand this principle. This is the current resonance type structure. I posted it on Wikipedia Tesla coil, so please refer to it. This basic structure has already been put to practical use in the CCFL inverter circuit. It can also be applied to wireless power transfer.
I built one! It works well enough. Winding the secondary was quite hard work but I got there in the end! I used a BC548 Transistor but I suspect a 2N2222 would have been better. Thanks for a great project!
What kind of wire do you use for the secondary coil? And I don't know if it's just me, but the LED seems to be backwards since the negative side of the battery is touching the positive side of the LED, or am I mistaking
do not you need switching frequency? (for resonance) and i think the base current is coming from 22k resistor. what is task of the led here? by the way, congratulations.
Muro Muro the return voltage from the secondary passes through the led and to the base of the transistor and turns off the transistor. There you have the switching frequency
Do you need a ferrite core? I did one and it worked without a ferrite rod but the primary number of turns was more than 500 and 15 inches taller. It seems the ferrie rod make it more efficient and smaller.
Hi! This is amazing. I'd love to make one that has a greater range. Would increasing the voltage achieve this? If so, should I change any of the parts? Thanks!
Jake Coan Thank you. Increasing the voltage will extend the range only by a little bit. This is because the electromagnetic field decreases as the square of the distance. That is, if you want to double the range, you will need four times more power. I am working on a larger model but it is not ready yet.
From some quick research I have found that the 3904 and 2222 are some of the most popular BJTs. The only difference being the current handling capabilities, 2222 can handle 1 Amp while the 3904 is at 200 milliAmps. Do you know the current running from collector to emitter? My next step is to simulate this in multisim when I get a chance. Thanks for your help and I love your videos!
eric misiak Ok it seems that it should work. I measured total current consumption and is about 80 ma, so colector emitter current must be loer than that.
I tried to build one too. I can see at 9V pin, there is 9Mhz, 2V wave. I didn't count the number of secondary turns. When I use my finger and touch the secondary coil, the frequency change to 18Mhz. Is it have to be 275 turn? I don't have a ferrite core, just air, guess it reduce the magnet field a lot. Thx
+Viraj Bagal A 2N2907 is a PNP transistor, but it should work if you reverse the LED and the battery. A BC548 is an NPN general purpose transistor that has specs similar to a 2N2222, which I'm guessing is what he meant by "2222A". In both cases, check the transistor pinouts. There is no standard.
Hey, that looks pretty cool! I built up the same setup but it seems not to work properly. My slayer exciter circuit works fine and I have an oscillation of 3Vpp in the primary coil and the whole circuit draws about 200mA. Can you tell me how much current your setup actually needs? Have you also analysed the primary circuit in an oscilloscope?
Is it necessary for you to hold both leg of the neon lamp to get it light up? and by the way why is my tesla coil voltage fluctuate and how to make it not fluctuate and produce enough voltage to light up a light bulb ua-cam.com/video/xWeP-P4xHXc/v-deo.html does it have to be exact 275 turn?
+Ludic Science I have this kind of transistor 4.bp.blogspot.com/--g8uSa9rczQ/Vv34JoR9-DI/AAAAAAAAH8c/SwIZ8ZRiFfg4vHnSXUWxQn2I5wxEgZoXQ/s1600/Zoom%2BPictures%2B-%2B02016-19-01-09-19-18.jpg Would you mind to tell me which one is collector, base , and emitter and is it good enough for the tesla coil in my video?? Also this one teslaprime.blogspot.my/2016/03/mosfet.html but i am not sure what is the collector, base, and emitter
i was following almost evry step as good as i had the parts, but itsn not working, its hard for you to figure out my problem with werry little detail of my projest but this is what i can explain, i have a secondary coil with 180++ turns and a primary with 3 turns, a werry hot transistor and a led that arent lighting up, is it used as a diode or is it suppose to light up ? and i have 2 10K ohms resistors in series.
+zzlayer535 The LED only lights up if it is working. 20K is fine. You probably have the transistor wired incorrectly. There is no standard, even the same part number by different manufacturers may have a different pinout. It is simple finding the Base lead with a multimeter on diode check, it looks to a meter like two diodes pointing from the Base to the two other leads. With the base connected correctly, it should not damage it if you have the Colllector and Emitter swapped. It may even oscillate, as many bipolar transistors will work but with reduced gain if the Collector and Emitter are reversed. So try it both ways. This may help: www.instructables.com/id/How-to-Build-a-Slayer-Exciter/?ALLSTEPS
As I understand there are various kinds of ferrite core material. Am I correct that the core material should be 61 material which is hi frequency? Other material with different numbers are used for low frequency.
Would this work to create a plasma ball with small lightbulbs? And can you post a step by step construction tutorial? I'm not very good at following schematics
Is there any substitute for the ferrite core? Or should I use only the ferrite core? And BTW I couldn't fetch magnetic wire, can i use the wire from a motor instead of a relay?
jamn610 The ferrite core is necessary, you can get one from an old a.m. radio (it is the antenna). You can use the wire from a motor as long as is thin enough.
Oh thanks a lot, while I was searching for a ferrite core, I used a iron screw and insulated it using tape. Well I couldn't even get my primary circuit to work, I mean the led wasn't lighting up. I checked all components and wiring. All seems fine. Help please?
In my pc power supply I have found two ferrers one is 2,5cm and second 0,5cm,what should I do can I connect this two in one with glu,or I should use the 2,5cm,in other videos i see that people use plastic pipes for secondary.So can i use plastic pipe 4cm long?
@Ludic Science how is the voltage being fromed on the other side of transformer. Its DC voltage from battery not AC. Also On the primary side it looks like a short circuit when the transistor closes ? What are your thoughts
+tamyboy1 The transistor acts as an oscillator. It opens and closes millions of times per second, and converts the DC into a train of pulses (similar to AC) that is fed to the primary. This creates a variable magnetic field in the primary that induces a voltage in the secondary.
+Ludic Science that's what I thought but the transistor's base in circuit is fed just by a switch. Are you saying the switch here and in your circuit is pulsing open and close by some other means ? Like a pwm from a microcontroller? sorry i feel like iam missing something obvious here.
+tamyboy1 the secondary is connected to base. The induced voltage on the secondary is what pushes down the base voltage and turns off the transistor. Then the secondary votage dissapears, transistor turns on again and the cycle repeats.
Hey i need some help....i ordered 2n2222a.....they gave me kps2n2222a.....and the circuit is not working...so i ordered 2n3904...i havent used them...they r 2n3904b 332...plz help me and tell me which model did u used?
hi. i'm an engineering student and i'm having a problem with my mini tesla coil. i'm wondering if i missed some steps or something else that's why it's not working. can you please help ?
if I put like a button, then can i put a higher voltage(like 18 volts) on it, without risk of damaging/exploding? Also, if i Dramatically increase the number of turns on secondary coil, will i have to make differences in the primary circuit?
perfect but i dont really get the instructions. sorry im just a begginner :) so its pretty hard for me but will it still work on the other transistor because i dont have the same but i have lots of different transistors like (SS 9013 H) (58550 C 09) (258772 PH 7) and more so i dont really know which to use so please help.
Hi Ludic Science, I followed all the directions on the circuit paper. (I printed it). When I switch it on the LED turns on, and the transistor gets warm, but nothing happens if I bring any any electrical object closeby. (I tried smal working lights from flashlights, and a working 19v dc fan from an old computer.) I used a plastic 2n2222 transistor, 38 AWG copper magnetic wire, 22k ohm resistor, a ferrite core that is approximately the same size as yours, a rocker 2 way switch, and a red LED. Could you please tell me whats going on my project is due thursday I built it twice and its stillnot working help! And is it ok if on the coil with 275 turns has overlapping wires? Please respond ASAP!!!!! By the way I tried your inductive coupling project and it worked perfectly!
I was unable to get this to work just yet, since I only have a 33k-ohm resistor, so I'm considering makeshifting with a potentiometer, but would it work if you used a larger NPN and a 12v supply, and would it work if you used a zener in place of the LED?
+Ludic Science I'll get one made when I can get you one, for free. Send me a private message on Google+ with your Gmail and I'll send you a preview & download when I get around to making it.
+Ludic Science Also, the tesla coil worked! I plugged it into the circuit and put a CFL next to the coil and it lit up. Now I just need a bigger transistor so I can pump 16v through it.
i found a ferrite rod in my old radio its 8 cm long and 1cm in diameter can i use it and if i can what changes should i do to the circuit ?? i really appreciate your help
Thomas Ferko AC and DC is a manmade oversimplification of the real thing. In lightning, it depends on your definition of DC. If your definition is simply "electrons flowing in only one direction," then lightning is DC. If your definition is "the current between two points with a constant potential difference," then it's not DC. (The potential difference decreases as the bolt carries current from one place to another.)Reference www.physicsforums.com/threads/lightning-ac-or-dc.70874/
hi where are the instructions for this....my daughter has science fair in her school in about a weeks time.. I would like for her to do this , if possible...Pl. advise.Thanks
I am using a heat sink and the BD135 a 4.6k resistor a little yellow LED with 1.8 Vf, .27 magnet wire for 13.3 centimeters giving around 350 turns for the secondary and a five turn primary using 1 mm insulated connector/hook up wire. Killed 3 transistors so far. Still have 2 left. What if i used a TIP35c. What size heat sink would you recommend. I am using one from PC PSU at the moment.. Thank your for your help :-) It is fun to play with so much ;-)
Ludic Science Hi thank you for your feedback. How would I wire two BD135 in parallel for this circuit? Maybe if I limit the current because I have been reading about the way the transistor works and it seems when it gets too hot it starts allowing lots of current then it gets hotter and allows more current until it dies/fuses. I have been turning up the voltage to 15/16 volts and allowing 1.2 amperes. Is this to much?
constructed this, input 12v, if I connect + and - like on schematics nothing works,if I connect + to led it lights up and I am getting 11v on primary coil and nothing on secundary. Any suggestions?
CroPyrotechnic led is right on schematics. try using 9v or less. Also, try reversing the primary. also the primary must be loose on secondary not tight, and at about half the heigth f secondary. Use a green led, or two reds in series.
Ludic Science I used a single red led, but it didn't light up at all... only when I switched the poles of 12v power supply, LED lit up like it would on 3v and I was getting 11v on primary. Also my 2N2222A transistor is in metal casing, is it different?
Ludic Science Ok, thanx, but unfortunately I burned one before, so I got only one left. Can you explain why using 2 LED would make a change and is there something else I can put instead of led?
Mehdi was right, he has an accent :3
Mehdi Sadaghdar brought me here
i came back after 5 years after watching mehdi's video again.
Same
This guy has an accent. "Of course you can never trust anyone with an accent." - Mehdi Sadaghdar
+Shaheer Syed absolutely right
but this circuit works its shown on his channel because of parasitic capacitance of air
Racist fuck
Omar Zanu no watch his video
YSC True. That Romanurushacks guy's is bs
Thanks Ludic for sharing this. It inspired me an my mates to recreate your circuit then boost it with larger secondary, copper tube primary, higher rated transistor and high voltage DC supply for university project. We can get a carona and now put audio through it using a mosfet as a controled interrupter switch. The secondary feedback makes this circuit unique and the blocking oscillator concept is cool to think of. Great stuff!
Sounds great!
This is very similar to the circuit used on those neon mugs, although be warned that like all high frequency RF devices it can mess with touch pads and possibly damage sensitive devices like pendrives if you get too close.
Thank you so much! I just finished my first attempt, and it works! I had to use the core from a RF
choke to make the secondary coil, and could only fit about 120 or so turns of the magnet wire I had available ( from DC motor), but it works! It has lit up an led I have attached to a wire coil, and makes my old "touch lamp" go on / off at around 2 inches. I thank you again , and look forward to tinkering with this concept for future projects.
BreaktoMake Great! I will upload a new version without ferrite soon
Very Cool micro Slayer, Great setup and tutorial.
GBluer Thanks so much!
You are amazing and your channel is amazing. I like to DIY and near about all the time i have success with the projects you publish. It is because you guide the viewer so well and do not over look small details. Thank You!.
As usual, great vid and breakdown on construction! 10/10.
Oden Knight Thanks!
This video is the first one that made me learning electricity (about three years ago).
Thanks a lot for your video!
Electroboom was right...he has an accent XD
Wonderful work a lot of people claim to have worlds smallest Tesla and i don't know for sure if its the smallest but its pretty tiny and works GREAT !
1.Can the turns in the secondary winding overlap each other?
2.What wire should be used in the primary winding? will ordinary copper wire will do?
3. The transistor heated up in less than 10 seconds, can I increase the resistor value? What would you recommend?
Thank you so much!
+Kristian Brent Erwin Arugay
1. No, they should not.
2. Ordinary copper wire will do.
3. Is it working? If so, what are you powering it with? A 9V power supply can put out a lot more current than a 9V battery. A TO-92 package cannot handle much power. A 2N2222A is rated at about 500mW. Raising the resistor will not help, it is only there to start the oscillator.
If it is not working and it is getting hot, you have the transistor wired incorrectly and it is probably damaged now. Even different manufacturers using the same part number may use different pinouts.
@@AlienRelicswhy can’t you overlap ?
@@walmarttrycs3196 It increases the voltage stress and it is likely to arc between windings.
What an Elegant (and Very Relevant) demo again! Thanks for Being Around and Spreading your Creativity and Love For Mankind! You've Really have shown something Most Relevant indeed here which may have in a near future Very Appreciated Nice Consequences! :) :) :) :)
Miniature Tesla Coil (Slayer Exciter)
Thank you! I would suggest a full brigde driver with a flyback transformer, something along these lines: kaizerpowerelectronics.dk/high-voltage/tl494-flyback-driver/
Really nice and easy to make circuit
dude i guess you should show all componets and how to build it so i can understand it better. so can you plz make a video of building a whole thing. and sorry for my bad english because that is not my first language.
i would really like a step by step guide pls ... im trying to do it for a school project and i cant understand some stuff so a full step by step would be nice pls
that is true just explain making secondry coil is not perfect insctruction to make that
if you build this really all componet's making prosses must be show
because without it. nothing we can do
Thank you for all your input to my questions. 5 mm diameter long ferrite rods are hard to find but I did find short 10 mm long sections. Have the rest of the components to build. Have a super idea as to how to make a game out of the tiny setup
Thomas Ferko What is that?
Sorry,but you use a ferrite core,it isn't a tesla coil
+Tekno force Self-resonant secondary. Your argument is invalid.
very simple but intresting setup, especially the ferritcore to reduce the resonant frequency seems to be a good solution for these small dimensions.
You have an accent seems suspicious huh
what about use air core?
Fabrício H. Franzoli if you use air core, you must wind at least 800 turns
this actually works
Hi, what direction did you wind the bigger (secondary coil)? Is it clockwise like the smaller too? Thanks!
i have made it but not working.
try harder or check my slayer exciter for rookies vid. ludic science knows too, there are always ppl who doubt
Very impressive result for a coil so small. Thanks for posting.
Leuchtet schon mal ganz ganz gut. Muss jetzt nur noch Musik machen ;-).
I have a question regarding the secondary coil if you could answers it please. When the negative is connected to the emitter the transistor acts like it is shorted out and the led doesn't light up. Is there a specific gauge of wire for the secondary coil ? And is the led marked in correctly on the schematic ?
Can you tell the reason behind working of transformer with DC?... I mean you supplied 9v DC so transformer not work so how you get High Voltages on secondary?
Also I want to know that are you using Any kind of oscillation setup with transistor due to which sine wave ( ac ) generated to run transformer???
Very well done! I have known about Gary's (Slayer) device for several years but, you made this very simple to replicate so now I will finally build one.
Thanks,
Bill
Pirate Labs Glad you like it!
Hello !
I maked this, but I have an big coil...is needed to use a coil with ferit? because my Slayer Exciter don't works.
Thanks !
One question. What is the wattage of that 22k resistor? 1/4, 1/2 or 1 watt? Something higher?
Thanks,
Bill
Pirate Labs 1/2 watt will do
Ludic Science
Thank you very much.
Bill
It's the first time in my life to see like this thing !!!
Wonderful and amazing more than can you imagine
Thanks a lot Sir ^^
Since the author conveniently chose to leave it out, can anyone explain how this circuit is supposed to work? Has anyone else built it to get the same results?
Finally one without music ! Thanks !
We fully understand this principle. This is the current resonance type structure. I posted it on Wikipedia Tesla coil, so please refer to it. This basic structure has already been put to practical use in the CCFL inverter circuit. It can also be applied to wireless power transfer.
Do you feel something when you touch the wire ? Does it makes little sparks ?
You are an awesome helping person. Thnx for your fast reply. I shared your video in FB
I built one! It works well enough. Winding the secondary was quite hard work but I got there in the end! I used a BC548 Transistor but I suspect a 2N2222 would have been better. Thanks for a great project!
Alexander Lang Glad you like it
i am trying to make it... Can i use 36awg wire for secondary and 25awg wire for primary? And can i coat the whole secondary coil with epoxy?
Thank you! This video is exactly what I've been looking for. Always good quality videos from you.
What kind of wire do you use for the secondary coil? And I don't know if it's just me, but the LED seems to be backwards since the negative side of the battery is touching the positive side of the LED, or am I mistaking
Agustin Bautista the secondary can be 39 to 41 AWG magnet wire. The led works backwards in this circuit. It is used as a diode.
Awesome thank you
One more question, can the primary coil the green wire, be any sort of jumper wire? Or does it need to be an specific cable?
You can get varied results depending on high high or low the primary coil is relatively to the secondary, usually the primary is at the bottom
do not you need switching frequency? (for resonance) and i think the base current is coming from 22k resistor. what is task of the led here?
by the way, congratulations.
Muro Muro the return voltage from the secondary passes through the led and to the base of the transistor and turns off the transistor. There you have the switching frequency
Do you need a ferrite core? I did one and it worked without a ferrite rod but the primary number of turns was more than 500 and 15 inches taller. It seems the ferrie rod make it more efficient and smaller.
Fadi Jabr Yes, the ferrite is only needed when you have a very small secondary.
Do you need some sort of conductive glue between sections of ferrite when stacking smaller sections to makeup the lenght?
Thomas Ferko No, use cyanoacrilate (super glue)
It's fun to how one of these up your sleeve and turn on some lights with your "special powers".
Gets everyone every time!
Hi! This is amazing. I'd love to make one that has a greater range. Would increasing the voltage achieve this? If so, should I change any of the parts?
Thanks!
Jake Coan Thank you. Increasing the voltage will extend the range only by a little bit. This is because the electromagnetic field decreases as the square of the distance. That is, if you want to double the range, you will need four times more power. I am working on a larger model but it is not ready yet.
i need help about that project plz contectc me, i have serverl problems in that project and that is not working in all condition
Can I stack four 10 mm long sections of 5 mm diameter ferrite cores together to make up the ferrite core?
Yes you can
Can I use a 3904 NPN transistor for this? Also what gauge wire are you using on the coil? it appears to be ~42 gauge.
eric misiak Not sure, I have not tried with that transistor. Wire is 40 i think
From some quick research I have found that the 3904 and 2222 are some of the most popular BJTs. The only difference being the current handling capabilities, 2222 can handle 1 Amp while the 3904 is at 200 milliAmps. Do you know the current running from collector to emitter? My next step is to simulate this in multisim when I get a chance.
Thanks for your help and I love your videos!
eric misiak Ok it seems that it should work. I measured total current consumption and is about 80 ma, so colector emitter current must be loer than that.
I tried to build one too. I can see at 9V pin, there is 9Mhz, 2V wave. I didn't count the number of secondary turns. When I use my finger and touch the secondary coil, the frequency change to 18Mhz. Is it have to be 275 turn? I don't have a ferrite core, just air, guess it reduce the magnet field a lot. Thx
Can you explain what causes the voltage in the circuit to oscillate? I'm looking at the schematic but can't figure it out. Thanks
Add in a capacitive coupling to gnd. Then the secondary is an LC circuit
i'm not getting 2222A transistor..... which other transistor is suitable?? is BC548 suitable?? or 2N2907 ??
+Viraj Bagal any low reaction time transistor might be suitable in some way. get bunch and test them
+Viraj Bagal A 2N2907 is a PNP transistor, but it should work if you reverse the LED and the battery.
A BC548 is an NPN general purpose transistor that has specs similar to a 2N2222, which I'm guessing is what he meant by "2222A".
In both cases, check the transistor pinouts. There is no standard.
Hey, that looks pretty cool! I built up the same setup but it seems not to work properly. My slayer exciter circuit works fine and I have an oscillation of 3Vpp in the primary coil and the whole circuit draws about 200mA. Can you tell me how much current your setup actually needs? Have you also analysed the primary circuit in an oscilloscope?
Hi my slayer draws 80-90 mA
I am using 0,3 mm wire for secondary and 1 mm wire for primary....can you tell me the turns? Please?
Is it necessary for you to hold both leg of the neon lamp to get it light up? and by the way why is my tesla coil voltage fluctuate and how to make it not fluctuate and produce enough voltage to light up a light bulb ua-cam.com/video/xWeP-P4xHXc/v-deo.html
does it have to be exact 275 turn?
+Joe Bonano Can be more that 275 turns. Your problem is that your secondary is too large for that small transistor. Use a tip41c for more power
+Ludic Science I have this kind of transistor 4.bp.blogspot.com/--g8uSa9rczQ/Vv34JoR9-DI/AAAAAAAAH8c/SwIZ8ZRiFfg4vHnSXUWxQn2I5wxEgZoXQ/s1600/Zoom%2BPictures%2B-%2B02016-19-01-09-19-18.jpg
Would you mind to tell me which one is collector, base , and emitter and is it good enough for the tesla coil in my video??
Also this one teslaprime.blogspot.my/2016/03/mosfet.html but i am not sure what is the collector, base, and emitter
+Joe Bonano put the transistor number on google and download the datasheet
hello i want to know if you used of 2n3904 transistor not 2n2222 that good or not? thank you for your answer good bye
yes you can
No superfluous intro, no loud music, only 3mins to explain topic.
i was following almost evry step as good as i had the parts, but itsn not working, its hard for you to figure out my problem with werry little detail of my projest but this is what i can explain, i have a secondary coil with 180++ turns and a primary with 3 turns, a werry hot transistor and a led that arent lighting up, is it used as a diode or is it suppose to light up ? and i have 2 10K ohms resistors in series.
+zzlayer535 The LED only lights up if it is working. 20K is fine.
You probably have the transistor wired incorrectly. There is no standard, even the same part number by different manufacturers may have a different pinout.
It is simple finding the Base lead with a multimeter on diode check, it looks to a meter like two diodes pointing from the Base to the two other leads. With the base connected correctly, it should not damage it if you have the Colllector and Emitter swapped. It may even oscillate, as many bipolar transistors will work but with reduced gain if the Collector and Emitter are reversed. So try it both ways.
This may help:
www.instructables.com/id/How-to-Build-a-Slayer-Exciter/?ALLSTEPS
As I understand there are various kinds of ferrite core material. Am I correct that the core material should be 61 material which is hi frequency? Other material with different numbers are used for low frequency.
Thomas Ferko The working frequency is about 100 Khz, almost any ferrite will work
Is it necessary to use a ferrite core for the secondary coil? In other models, only one plastic tube is used ...
Would this work to create a plasma ball with small lightbulbs? And can you post a step by step construction tutorial? I'm not very good at following schematics
Tressa Magnone Will not work as a plasma ball
i have some questions ...
the transistor heating up quickly ...
it is not working with 9 v battery the LED is not glowing. .
should i use a metallic core inside of the secondary coil or can i use any core?
you can ONLY use a ferrite core
Sorry to ask many question. What can I substitute for a Teflon tape.
Is there any substitute for the ferrite core? Or should I use only the ferrite core? And BTW I couldn't fetch magnetic wire, can i use the wire from a motor instead of a relay?
jamn610 The ferrite core is necessary, you can get one from an old a.m. radio (it is the antenna). You can use the wire from a motor as long as is thin enough.
Oh thanks a lot, while I was searching for a ferrite core, I used a iron screw and insulated it using tape.
Well I couldn't even get my primary circuit to work, I mean the led wasn't lighting up. I checked all components and wiring. All seems fine. Help please?
jamn610 The ferrite core is necessary to generate a high voltage spike that turns on and off the transistor and lights the led.
Ludic Science ah, thanks a lot. I'll try to find a ferrite core.
In my pc power supply I have found two ferrers one is 2,5cm and second 0,5cm,what should I do can I connect this two in one with glu,or I should use the 2,5cm,in other videos i see that people use plastic pipes for secondary.So can i use plastic pipe 4cm long?
DJ Ice Tea You can glue the ferrites with cyanoacrilate. If you want to use plastic pipe, must be about 10 cm long.
Do we must have to use this ferrite core , ? can't we use something similiar to the size instead , please help ?
but don't know how many turns i have to make?
and also which type of wire do i use in primary coil?
help me to trouble shoot.
275 or more turns. #26 wire for primary
Why we should not overlap secondary winding.., please can you explain completely.
also i found another one but it has a rectangular shape with rounded edges
its 5cm long and 1cm wide
should i use this one or the one from before?
Hadi Haidar Use the rectangular
@Ludic Science how is the voltage being fromed on the other side of transformer. Its DC voltage from battery not AC. Also On the primary side it looks like a short circuit when the transistor closes ? What are your thoughts
+tamyboy1 The transistor acts as an oscillator. It opens and closes millions of times per second, and converts the DC into a train of pulses (similar to AC) that is fed to the primary. This creates a variable magnetic field in the primary that induces a voltage in the secondary.
+Ludic Science that's what I thought but the transistor's base in circuit is fed just by a switch. Are you saying the switch here and in your circuit is pulsing open and close by some other means ? Like a pwm from a microcontroller? sorry i feel like iam missing something obvious here.
+tamyboy1 the secondary is connected to base. The induced voltage on the secondary is what pushes down the base voltage and turns off the transistor. Then the secondary votage dissapears, transistor turns on again and the cycle repeats.
+Ludic Science oh ok, I didn't realize that. Thanks
i do not have 2222a transistor. Can i use 13001 8d or 13001 8D please tell me which one is better
You can use bc547
What if i just use a random metal bolt as the core? Or a non conductor one? Will it still work?
Hey i need some help....i ordered 2n2222a.....they gave me kps2n2222a.....and the circuit is not working...so i ordered 2n3904...i havent used them...they r 2n3904b 332...plz help me and tell me which model did u used?
kh Shakkor you can use the kps but the pins are in different position. check the datasheet of the kps, you can search it in google
Ohh my god ....thaz why itz not working thankz
Can u give me the picture of pin? Plz
kh Shakkor use google
I tried both r same ....to2
Haloo I want asking you about 222transistor icant find one of them can I use any transistor with different resistorPlease answer Thank you
hi. i'm an engineering student and i'm having a problem with my mini tesla coil. i'm wondering if i missed some steps or something else that's why it's not working. can you please help ?
+Hannah Mariano First, the LED must be green. Also, try swapping the connections of the primary, maybe you have the wrong polarity.
if I put like a button, then can i put a higher voltage(like 18 volts) on it, without risk of damaging/exploding?
Also, if i Dramatically increase the number of turns on secondary coil, will i have to make differences in the primary circuit?
+Ashwin George 18 v will burn the circuit. yes, more turns needs different components.
Ludic Science Okay! Thanks!!!
Ludic Science is there any way to increase the range?
perfect but i dont really get the instructions. sorry im just a begginner :)
so its pretty hard for me but will it still work on the other transistor because i dont have the same but i have lots of different transistors like (SS 9013 H) (58550 C 09) (258772 PH 7) and more so i dont really know which to use so please help.
zukajson 48 the SS 9013 H should work
thanks a lot :D
I don't have a 2n2222 transistor. Plz tell me where can I find one or I could take out some transistors from old CFLs so which else models will work
+Arun Kumar the 2n2222 is a very common transistor, any electronics store has them
+Ludic Science thanks but do u know something from which I can take it out.
What is the diameter of the ferrite core you used to make this? We know how long it is.
Thomas Ferko 5 mm
Hi Ludic Science, I followed all the directions on the circuit paper. (I printed it). When I switch it on the LED turns on, and the transistor gets warm, but nothing happens if I bring any any electrical object closeby. (I tried smal working lights from flashlights, and a working 19v dc fan from an old computer.) I used a plastic 2n2222 transistor, 38 AWG copper magnetic wire, 22k ohm resistor, a ferrite core that is approximately the same size as yours, a rocker 2 way switch, and a red LED. Could you please tell me whats going on my project is due thursday I built it twice and its stillnot working help! And is it ok if on the coil with 275 turns has overlapping wires? Please respond ASAP!!!!!
By the way I tried your inductive coupling project and it worked perfectly!
RamenNoodles3351 Most probable is that the primary coil has the wrong polarity. Invert the connections of the primary
I was unable to get this to work just yet, since I only have a 33k-ohm resistor, so I'm considering makeshifting with a potentiometer, but would it work if you used a larger NPN and a 12v supply, and would it work if you used a zener in place of the LED?
+OBV10U3_NINJA yes but the zener will not work
Ludic Science Thanks. I subscribed, I'd like to see more of this high voltage stuff from you. Maybe I can make you an intro someday :D
+OBV10U3_NINJA I need one
+Ludic Science I'll get one made when I can get you one, for free. Send me a private message on Google+ with your Gmail and I'll send you a preview & download when I get around to making it.
+Ludic Science Also, the tesla coil worked! I plugged it into the circuit and put a CFL next to the coil and it lit up. Now I just need a bigger transistor so I can pump 16v through it.
Nice work. Good design and well explained. Thanks.
John Davidson Thanks!!
Hello! I got green 5mm LED, 2N2222A metal can transistor, 22k ohm resistor, tesla coil,9 volt battery, and the circuit doesn't work.
CroPyrotechnic try inverting the connections of the primary
ok,tomorrow
Ludic Science what do you mea by inverting the connections of the primary. what primary?
Braga Iulian the 3 turn coil.
Man this is fake video watch ElectroBoom of Tesla coil video 😉
Super ! My Question - If I touch the coil will it dangerous ? If I don't utilize the electricity will the battery be finished ?
it will burn your skin a little. the battery will be finished even if energy is not used
Hola Manuel,
3 turns primary, 275 turns secondary. Please explain why this ratio.
Gracias.
is the ferrite core necesary, or can i substitute for a iron core wrapped in isolating tape
i found a ferrite rod in my old radio
its 8 cm long and 1cm in diameter
can i use it and if i can what changes should i do to the circuit ??
i really appreciate your help
Hadi Haidar Hi, use that ferrite and wind at least 350 turns
Silly question. Is a lightning bolt AC or DC electricity? We know the tesla coil radiates AC
Thomas Ferko AC and DC is a manmade oversimplification of the real thing. In lightning, it depends on your definition of DC. If your definition is simply "electrons flowing in only one direction," then lightning is DC. If your definition is "the current between two points with a constant potential difference," then it's not DC. (The potential difference decreases as the bolt carries current from one place to another.)Reference www.physicsforums.com/threads/lightning-ac-or-dc.70874/
hi where are the instructions for this....my daughter has science fair in her school in about a weeks time.. I would like for her to do this , if possible...Pl. advise.Thanks
The circuit diagram is in the video, it is very simple only for components, the video gives directions also on buiding the coil, wires sizes etc.
hey ludic i cannot get 2n2222 transistor has there another transistor which can work . please reply fast also tell resistance value.
rajesh kumar i have not tried with other transistors
Can I use other transistors? If yes please recommend some ? i cant seem to find 2n2222
+Nami Mani almost any small NPN works.
Hi. Great video. I copied your circuit and all works and is fun to play with...but my transistors keep dying. Have you any advice?
I am using a heat sink and the BD135 a 4.6k resistor a little yellow LED with 1.8 Vf, .27 magnet wire for 13.3 centimeters giving around 350 turns for the secondary and a five turn primary using 1 mm insulated connector/hook up wire.
Killed 3 transistors so far. Still have 2 left. What if i used a TIP35c. What size heat sink would you recommend. I am using one from PC PSU at the moment.. Thank your for your help :-) It is fun to play with so much ;-)
Monkey Magic your heatsink is fine. the tip45c is too big, I think it will be better to use two bd135 in parallel, eaach with its own resistor
Ludic Science Hi thank you for your feedback. How would I wire two BD135 in parallel for this circuit?
Maybe if I limit the current because I have been reading about the way the transistor works and it seems when it gets too hot it starts allowing lots of current then it gets hotter and allows more current until it dies/fuses.
I have been turning up the voltage to 15/16 volts and allowing 1.2 amperes. Is this to much?
How can u make the coil so tiny ? If i do 275 windings its like10 cm.
+Gabriel Engel wire is very thin
can you please explain step by step cause i want to make this for a projekt in school but i dont understand everything here.
👏🏻👏🏻👏🏻Impressive results whit a minimum tesla coil. 😮👌🏻
i dont understant the way you did the wireing... can you show me somehow? ,, i dont understand wich wire where connects with what... pls respond
watch a demonstration video on how to make a Slayer Exiter
Well I got it working but the LED does not work so what is the importance of the LED again? For me it works without the LED.
undergroundscience The LED acts as a diode. It does not matter if it does not light, but is needed in the circuit.
constructed this, input 12v, if I connect + and - like on schematics nothing works,if I connect + to led it lights up and I am getting 11v on primary coil and nothing on secundary. Any suggestions?
CroPyrotechnic led is right on schematics. try using 9v or less. Also, try reversing the primary. also the primary must be loose on secondary not tight, and at about half the heigth f secondary. Use a green led, or two reds in series.
Ludic Science I used a single red led, but it didn't light up at all... only when I switched the poles of 12v power supply, LED lit up like it would on 3v and I was getting 11v on primary. Also my 2N2222A transistor is in metal casing, is it different?
CroPyrotechnic Use two red leds in series, with the polarity as in video. I don't think your transistor is the problem
Ludic Science Ok, thanx, but unfortunately I burned one before, so I got only one left. Can you explain why using 2 LED would make a change and is there something else I can put instead of led?
CroPyrotechnic the led feed the transistor base, using two leds adjusts that voltage, you can use diodes instead of leds
What's the battery life like on this? Say it's running an LED non stop.