tesla coil resonance

How do i get a tesla coil to resonate

Topic by science kid   |  last reply


Can someone help me build this LC resonant circuit? and explain it to me Answered

"An LCR circuit 1 is comprised of a capacitor 3, inductor 5, transformer T primary winding 9 and resistance 11 connected in series. It is assumed that the electrical conductors connecting the various circuit elements and forming the inductor 5 and primary winding 9 are perfect conductors; i.e., no DC resistance. Resistor 11 is a lump resistance equivalent to the total DC resistance of the actual circuit components and conductors. The inductor 5 is wound on a core 7"

Question by Intercom D   |  last reply


Choosing Resonator for AtMega328P design?

The ATMega328P datasheet specifies a load capacitance for a resonator from 12-22pF but the only 2 Resonators that will fit in my design (from Digikey) have 10pF and 33pF internal capacitors. Which one should I use, the 10pF or the 33pF, and what are the tradeoffs? Here is the atmega328p datesheet

Question by DELETED_MakiY2   |  last reply


Resonating my tesla coil? Answered

I have heard a little about resonating a tesla coil and wan't to make sure that it is going to before I spend money for my primary (copper is expensive).  My secondary has about 1400 turns of wire.  I am going to be using a bucket capacitor like The Geek Group on youtube built, and a 60 Hz high voltage transformer.  My primary will hopefully be 1/4 inch, and I wan't to know how many turns I need and if I can do a funnel looking shape like this one Tesla Coil.  One other thing is that my tesla coil is 30 inches tall, so does my primary need to get closer to the top to work.  I think I got all of the primaries and secondaries right, I know which is which, but sometimes I swap the words.  It would be a great help if you answered my question.

Question by jj.inc   |  last reply


How do I make an Induction Furnace?

I know the basic principle, but I can't seem to figure out how to design my own. If you know of any resources, those would help a ton :) The other thing that bugs me about induction furnaces is the size of the work coil.  Why are almost all of the work coils so small? (in turns)  It seems like the more turns the better, regardless of the power you're shoving through them.  The only reason that I could imagine is cooling, but I'm still clueless. Thanks I'bles! -muffin

Question by T3h_Muffinator   |  last reply


Electrolytic Capacitor types/ uses? Answered

About electrolytic (aluminium) capacitors..... what do the low ESR ones do that normal ones don't? And how come they have these capacitors in bipolar types, but not all are bipolar? Is it because of the size/cost? And lastly, can you make an LC circuit with any electrolytic capacitor?                                                                                                             Many thanks P.S: In which frequency range are LC resonant ciruits best used? Cos I heard that lower/higher than a specific point, they become impractical or something....

Question by .Unknown.   |  last reply



Resonant of Solid stat tesla coil ? Answered

Dear All.. I search on the net some sites to learn how the SSTC work. But my English is no good  I do not understand all as the author says. So please could you help me to know: -Primary and secondary SSTC sides  must be tuned to the same resonant frequency as SGTC ? -Or only the second coil is necessarily tuning? Thank you in advance for your time.

Question by lam   |  last reply


How to wire an MOT to have resonance

So I have two Mots One is bigger and another is smaller .. just in case .. and they both have the same wattage.. just letting you know just in case that's relevant.. also I have 3 MOCS or Microwave Oven Capacitors .. How Exactly would I wire it for resonance.. please no schematics .. just explain visually or textually but with as much detail as possible ..

Question by TaeronR   |  last reply


Wireless energy transfer and resonant coupling?

I am getting a bit sick and tired of frying expensive parts, entire coils and sitting in stinking smoke for hours, so time to gather some new ideas from you guys ;) Problem as short as possible: I am working on wireless energy transmission. Not with the usualy distances we know from charging pads or electric toothbrushes though, I am aiming for 30cm and more of distance here. After endless hours wasted on testing different coil designs I think I got that one nailed quite good but the thing is that I seem to be unable to keep resonance under load. The coils require a very tiny window for the right operating frequency in the 40kHz range or for the other design in the 150kHz region. When the frequency shifts more than 3 or 4kHz from the resonant point the efficiency drops to useless. Since this entire thing is planned to be as simple as possible so everyone can do it I would like to prevent complicated electronics. The few I need so far are done through ready to use modules. Of course a microcontroller would be the most obvious choice here but that does not fit in as I like "old school" for this one. Two ways I considered so far with more or less success: a) Fixed frequency feed and limited output power. This works actually quite well but only allows for tiny power levels like charging a mobile phone or tablet if you have some time. Problem however is that load changes affect the frequency and without a link back to the sender the efficiency goes down and not enough energy reaches the receiver for usage. b) ZVS driven coil. So far this approach gives the best output power but also uses huge amounts of juice. Good to make a fancy glass stand for your TV and supply the power through a hidden receiver in the base of the TV but since there is no limit or link between sender and receiver it is full power only. Is there a really simple way to provide a limited amount of power together with automatic resonance keping? Next one might be a bit tricky: Is there a simple way to increase the harmonic frequencies? As we know every simple oscillator also creates and reacts to the corresponding harmonic frequencies. On the sender's side I would like to be able to not just feed the primary frequency but also one of the harmonic frequencies with a similar power level. Again without a microcontroller or extensive electronics where possible.

Question by Downunder35m   |  last reply


Simple way to make a vibrating resonance speaker? How does a vibrating resonance speaker work?

Hi, I'm wondering if there is a simple way to make a vibrating resonance speaker?  Possibly out of house hold materials?  How does a vibrating resonance speaker work?  Thanks in advance. :D

Question by salomon1996   |  last reply


Inductive coupling with/and AC? Answered

Several things I wanted to know, but couldn't find; If 2 AC outputs are of the same amplitude, but of different frequency, will one necessarily be higher in power? In a conventional transformer, (not resonant) does a higher frequency allow for higher efficiency coupling? Does this change if the transformer is resonant? Is a 'standard' transformer more efficient than a resonant one at a very close range? (Provided that frequency, power, etc. are all the same?) And lastly, does the resonant frequency of a resonant inductive coupling circuit affect the frequency at which it couples? (did that all make sense?)                                                                                                                                        Thanks

Question by .Unknown.   |  last reply


Ceramic resonator vs. Quartz crystal for arduino? Answered

Hey- I'm going to build some Arduino clones (as posted from http://fritzing.org/projects/barebones-arduino/ ) and was wondering if it would be better to use a crystal or a ceramic resonator. i will be ordering from Tayda Electronics (Ive ordered before, 10 days shipping for rock bottom prices, I'm ok with that) and the resonators and crystals are +-5c. difference, so I was wondering if I could use resonators, since they are a bit cheaper and I'm ordering a few (around 8). Which ones would be better? Also, does anyone know for the circuit from the above link would work with a 4.5v supply if I just left out the 5v regulator? Many thanks- Astroboy907

Question by astroboy907   |  last reply


HELP measure resonant frequency on induction heating. ? Answered

Dear  All..... In this circuit and formula  on (GOOGLE). Please could you help me to know 3 questions: -How  I can measure resonant frequency  of this circuit, because it has   2 L and 2 C on this circuit?. - where I  must to put the probes in this circuit for measures frequency? - If I want to used less power(less heating) I must change L  or C  or both?  Thank you so much in advance  for your time.

Question by lam   |  last reply


Removed intake resonator, now I have a small whine

I removed the intake resonator on my car, now I have a small whine to my engine. I know the resonator takes away noises and stuff, but others have done this and got a low hum, not a whine. I don't like my car sounding like a Ford power steering pump. Why is this?

Topic by Yerboogieman   |  last reply


In what way is the scientific/technological community putting the Schumann Resonances to use? Answered

Apparently the whole earth has electromagnetic resonances, like a big ol' magnetron cavity. Wouldn't that be terribly useful? I can't think of quite how, myself, but the significance feels imminent.

Question by V-Man737   |  last reply


Square Wave Generator (For Resonant Air-Gap Transformer)

I've decided on a project for the new year that is ~~less likely to lead to sterilization~~ better than my old project (which was a homebrew x-ray machine). My new project is something to wirelessly power some LEDs. I've done some research (read as, YES NACHO, I ALREADY GOOGLED IT!) and looked at puffin's unfinished instructable on IPT (it helped a lot). What I've found out is that to start, I will need something to generate a square wave AC signal. The circuit I decided on is a 555 multivibrator. One of my friends let me copy the schematic from his notebook. I've got a couple of questions still (and I hoped you guys could help). 1st. (Dumb Question) That symbol in the second picture is ground, right? 2nd. Once I build the multivibrator, how would I hook it up with the rest of the circuitry for my air gap transformer? (ie. where would the outputs on the circuit be?) 3rd. What does that symbol (it looks like it should just be a resistor symbol), next to the words speaker or other circuit mean? Is it just a resistor or is it actually the outputs I've been looking for? 4th. Is there anyone who has successfully done a project like this before (recently)? Thanks in advance for any help.

Topic by Gjdj3   |  last reply


Voltage controlled low pass filter with resonance schematics, anyone? Answered

Can anyone provide a link or schematic for an audio low-pass filter with resonance, with the low pass frequency able to be controlled with varying voltage? I'm hoping to make something like the moogerfooger, but I don't need an envelope filter.

Question by aelias36   |  last reply


Wireless Power Transmission

Nikola Tesla's grandest vision was the transmission of large amounts of power without wires. His work in this area was abandoned by his contemporaries, and there is still much debate over if it could or could not work. I would like to hear your opinions on this. Do you think it is possible? Would it require only one transmitter, or several, spread across the globe? Would it be safe? Would it be worthwhile? Could Tesla's original spark gap circuit been sufficient to drive it? Or would it be better to use vacuum tubes or solid state setups? Would the operating frequency be very high or very low? Pictured below is how I think Tesla may have done it, based on the information I've seen. It's a bit over-simplified, but to the best of my knowledge, it covers most of what is needed. Please note that, although the transmitter terminals would be at a much higher elevation than pictured, the receiving terminals could stay at a relatively low elevation. This link is to a YouTube video of someone using a small Solid-State Tesla Coil for wireless power transmission: www.youtube.com/watch Edit: I had orriginally imagined that the system would work by capacitive coupling between the Ionosphere and the coils. Afterwards I realized that electrostatic capacitive coupling will decouple after seperation between two plates is greater than 1/2 the wavelength (or, at least in theory), so I personally abandoned the idea. The only problem is that I can't imagine how power would be sent to airplanes. Also, this is a very good read on the subject, from a very interesting site: www.teslaradio.com/pages/wireless_102.htm

Topic by ElectricUmbrella   |  last reply


What impact does impedance have when selecting a ceramic resonator to use with a microcontroller.? Answered

I'm looking for a 20MHz ceramic resonator with build in load capacitors and I've got my decision narrowed down to two. One has an impedance of 50 ohms and the other (slightly more expensive) one has an impedance of 30 ohms. An Atmel ATMega168 is the processor in question if that matters.

Question by nolte919   |  last reply


Noise or Music?

The "Bose" sound system is based on chamber resonance like that of musical instruments. This is the difference between a whistle and a flute. The mouth piece of a trumpet is raw without its additional plumbing. The noise of a piezo-electric sounder is raw, but chambered to resonate...better. A trumpet is basically an acoustical waveguide device. Consider this and lets see if you can "WOW!" the crowds with your sounds. The trumpet mellows the sound of the mouth piece by reflecting the sound repetitively off the inside walls of the horn. The angle is low so the acoustic wave reflects many times along the length. What works for you?

Question by robertgrist   |  last reply


resonance wireless inductive coupling final year project (wireless handphone charger)

Hi im doing wireless inductive coupling using square coils.Anyone can advise which equation to determine the inductance? i dont have a LCR meter :( I have problems combining my full wave bridge rectifier and voltage regulator. Do i need impedance matching?

Question by breadpig   |  last reply


Wireless Power

----- Click Here for Full Story -----We may be able to say goodbye to power cords in five years, as Intel has developed a system called WREL (wireless resonant energy link) that could possibly run electronics without having to find a wall socket."Wouldn't it be fantastic if we didn't think about where the power was coming from and the power was everywhere?"said by Intel boss Justin Rattner in an interview with BBC. Rattner explained that through Intel's idea of "magnetic induction", the power source can be tuned through a resonator, enabling gadgets to receive power wirelessly. The report further explains:"Power is put into magnetic fields at a transmitting resonator - basically an antenna. The receiving resonator is tuned to efficiently absorb energy from the magnetic field, whereas nearby objects do not."Of course, there would be issues at hand if Intel's technology breaks through the mainstream. How are companies such as Monster Cable going to fair if this new possibility rises? Well, we'll just have to see until then.Just how long till someone makes this cheap?

Topic by Keith-Kid   |  last reply


How to get an ATtiny to run an accurate clock? Answered

I'm making a clock with an ATtiny and I would like to know how to make it tell accurate time. I'm already pretty sure it would require an external crystal or resonator, but I just don't know the frequency or if there are any code requirements. I'll be programming the chip with an Arduino, if that helps with code. Thanks!

Question by GenAap   |  last reply


How to ballast an MOT with another Mot and have it to have resonance at the same time?

So I have two MOTS and 3 MOC'S (microwave oven capacitors) and I'm wondering how I can wire it to be ballasted and to also have resonance at the same time.. If that's possible.. Because I'd like to have it ballasted but ballasting limits current which in turn gives you smaller arcs so I want to wire it to have resonance so I can have big arcs while still having it ballasted.. Someone please help quick!..    To make it simple I wanna know how to wire two MOTS to be ballasted and also have resonance.. An idea came to mind if I have two MOTS I can wire one to act as an inductive ballast but Idk how to so that's why I came here but I could do that after I figure out from you guys and then maybe I could use one capacitor to act with the inductive ballast and use the capacitor as a second ballast for capacitive ballasting go work along with the inductive ballast.. Anyway Just help me with wiring it to be ballasted and how to wire it to have resonance while ballasted.. And if I can use both the 2nd mot and the capacitor to both work as ballasts at the same time.. Thank you c: No homo but much love if you take your time to help me c; <3 P.s.  Both MOTS are atleast 1000 to 1100 watts and let off 2000 volts minimum and atleast 20 to 30 amps when arcs are being made because my circuit breaker always trips on the wall panel with all the breakers to everything in the house and capacitors are atleast 0.80 to 0.98 uF.. And have a max capacitance of 2000 to 2200 volts minimum.. I can't afford my own circuit breaker to wire to any of the MOTS nor thecapacitor s and can't afford a wall plug thing to wire to a switch either.. So limited on some things..

Question by TaeronR   |  last reply


reverse connected guitar pickups make strings resonate - how to make it stronger?

Hey all ,  im having a problem ,  i connected some guitar pickups to send frequencys instead of receiving , when close to a certain section of a piano , it makes the strings resonate , and i can play music thru the strings (i even get voice timbres) now , my problem is like that - the vibrations are extremely soft ,and i need to somehow make them stronger ,  i think one of the ways would be to magnetify the strings , but i would really like to know if there is a way to strengthen the pickup signal without blowing anything up , anyone has an idea? i think it has to do with electro-magnet power , so amplifing it should work , but adding a 5 watt small amp didn't make any diference...

Topic by dogme   |  last reply


custom embroided patch?

I am looking for some custom patches made does anyone know a good company who will do one off patches for a resonable price, preferably ukbased?

Question by TechDante 


Tesla Coil MMC

Hello. I am currently trying to build a Tesla coil. However, due to a little mistake my MMC only has about 1/4th of the capacitance required to get it to resonate . Now I wonder what the best course of action would be. add a resistor to reduce the amount of amps to 1/4th of its maximum (6000 volt, 5 mA instead of 6000 volt, 20 mA), and thus the capacity required for resonance (I have a variable resistor here). Or just run it with full power, which would mean it would most likely not function as good as it could (spark gap fires 4 times where it only should fire once) I am currently not capable of adding up extra capacitors to the bank due to a lack of money, but might decide to do this in the furture Help would be appriciated.

Question by kirdaiht   |  last reply


HV power supply and ZVS switching? Answered

I am slightly running out of brain power here and get the feeling I am just running around in circles. Problem: I want to build a HV power supply delivering 10-15KV that is driven by a ZVS circuit - basically the same I used in my Induction Heating Ible. I also want to double the output voltage with a simple cascade. Goal: To get the most effiency without overheating things. Areas where my brain feels too empty from thinking: 1. I know for sure the primary of the transformer will operate at a resonant frequency but how does this affect the scendary coil, especially under load? My small scale tests showed quite severe changes in the frequency depending on the load put onto the primary... Also the output voltage shows "spikes" at certain frequencies, I assume this happens while both primary and secondary share some harmonic frequencies. 2. With a simple dide/capacitor cascade I would only get a DC output, to keep an AC output slightly more complex circuits are required. How does this affect the resonant frequency of the secondary winding? 3. Considering 1 and 2, is there a simple way of keeping both the primary and the secondary coil of the transformer in resonance regardless of the load?

Question by Downunder35m   |  last reply


cheap mythbusters

Does anyone know where to get all of the mythbusters episodes at a resonable price like: Season 1 part 1 Season 1 part 2 (is there a second season!?!) season 3 season 4 to buy all of them off of discovery it's 200 bucks!

Topic by guyfrom7up   |  last reply


CRT monitor for sale

I have an old looking CRT its like the ones seen in the early TV's. I would like to get rid of it; I tested it and it works. Any one who makes a resonable offer can have it. Sorry no pictures yet!

Topic by inductionheat!   |  last reply


Favorites confusion

I can't "favorite" any more 'ibles!  I have 80 already, but I can't find where there was a limit.  I also tried to go back and clean out some that weren't so favorite, but for some reson I couldn't "un-fav" any.  Help!

Topic by Stoval   |  last reply


SVG Files

I signed up as a premium member and when I did it said I have access to download files. I need to know where I can get the svg files for the pulse generator. Can anyone help me as this was the main reson I signed up.

Question by crwhite57 


Determining the correct specifications of my subwoofer?

I have purchased a local brand sub-woofer which does not comes with any specifications except the following: Impedance: 4 Ohms Output RMS:20 Watts Frequency Response: 40Hz~170Hz Effective Cone Diameter(D): 4" However i wanted to know the following Equivalent Volume(Vas) Free Air Resonance (Fs) Total Q (Qts) Actual System Q (Qtc) Resonance Frequency (Fb) Is there is any way to determine these Thanks in Advance....

Question by adarshnarsaria   |  last reply


Is there a way to know if you are somewhat famous in instructables? Answered

More importantly, (Jk, Jk,) Am I resonably famous? Some people to name, NachoMama, Adrian Monk, Kiteman, ewilhelm, (I know, he's CEO but still,) Kipkay, and many others.

Question by PKTraceur   |  last reply


Tesla coil tank capacitor? Answered

Ignoring resonance what should the average capacitance of a Tesla coil tank capacitor be? In what  appliances can you find large high voltage capacitors, preferably above 10nF? And can you use microwave capacitors in series for a Tesla coil tank capacitor?

Question by The MadScientist   |  last reply


crystal oscillator TCXO VCXO OCXO

Guangzhou zgc electronic co.ltdZGC Electroric co.,ltd. is an incustrial entity that is involved in developing and manufacturing quartz crystal resonator of various models and specifications.tel:86-20-32068136fax:86-20-32068201ZGC Electronic CO.,LtdZGC Electronic CO.,Ltd

Topic by zhenggong 


Drive systems using cogs for a combat robot? Answered

I am making a combat robot and would like to purchase a drive system which can power two 6cm diameter wheels with a resonable amount of toque. I have a 9.6v motor of which i would like to power it with. Thanks Oscar

Question by oscarthompson   |  last reply


Headphone Amp speaker impedance

The headphone amp I built awhile back is working pretty good, but recently I saw something about matching speakers impedance to the circuits impedance or something like that. IDK. Is there something you have to do to regulate the output to "match" your speakers. A google search brought up something about a peak resonance....

Question by 7654321   |  last reply


could someone post an instructable on how to make a quad MOT stack?

I looked all over the internet and instructables on how to make a quad Microwave oven transformer stack but all i could find is a schematic  and that is not enough.  there are plenty of instructables on how to make a dual stack but none on a quad also could you show me how to add resonant capacitors

Question by crazy-blender   |  last reply


DIY 3d printer ideas

In every "diy 3d printer" page i've seen, the XYZ axi are controlled by servos. What i don't have in my garage are servos, but i do have a mass of actuators. Would it be acceptable to use actuators to controll XYZ? I see no problem with it but if you readers do please comment below and possibly add a resonable solution to go with it. Thank you :)

Topic by Dr.Tech   |  last reply


Data on a super shotgun mike from 1960?

I am looking for info on a directional  mike design from 40 years ago I cant find a thing on. It used 20 or 30 lenghts of conduit 20 to 40 inches long bundled together. The effect was to add their resonant effect. I beleive it was directional as well and called a shotgun mike. Was in pop electronics type magazines.

Question by ericsundbergva   |  last reply


Quiet Bench

I am an apartment dweller who loves to do small metal work. I have somewhat adapted to keep the noise down, but there is one huge problem: I can hardly tap on anything without my bench/table turning into an amplifying resonating chamber...Boom! I have the same problem with filing and sawing. I would love some thoughts on economical methods for deadening the vibrations. Thanks!

Topic by eruger   |  last reply


Testing Tesla coil frequency with a multimeter frequency (Hz) meter?

My multimeter can measure up to 20MHz and I was wondering if I could test the resonant frequency of my Tesla coil by running it (untuned) then having the multimeter attached to an inductor a few feet away?  Would this work or would I need some kind of small circuit attached to the multimeter as well? If I could do this would it work with the primary as well?

Question by The MadScientist   |  last reply


Split Tesla coils anyone?!

I am collecting data in the form of old pics, patents, newpaper and magazine articles as well as just doing things.Tesla coils are fun but is anyone experimenting with the original "multiplying transformer" that Tesla created?And before you say, sure I have a Tesla coil......I mean:Large diameter primary coil with one part of the secondary in very close proximity while the other half of the secondary is located at the center ;)

Topic by Downunder35m   |  last reply


How to tune a bell ?

I'm building a doorbell-operated carillon of bells, which will play the "Westminster Chimes" on a set of real brass bells (the sort with a wooden handle that you would normally shake). They will be hammered either by solenoid mechanisms, or by mechanical triggers, driven from a pinned rotating drum. My question is - Is it possible to change the pitch of a bell, either by removing metal, or adding metal (with a weld), without ruining the resonance or the tone of the bell ? - And upon what part of the bell would you perform this action ?

Question by and7barton   |  last reply


Flyback Driver At 2KHZ? Answered

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


Body Fat Analyser

Have just been looking at buying some body fat analyser scales, and they are so expensive! £40 for what is essentially a few electronic components and a lookup table seems ridiculous. I think they use an electric pulse and then something to do with how the fat/water whatever resonates or something. As you see I don't have much to go on. Can anyone shed some light on how they measure these things and maybe even post an Instructable. Much appreciated.

Topic by evilad 


Tesla Coil Hat

Tyler Christensen, or christensent of MITERS, the MIT Electronic Research Society, took a more high-voltage approach to Halloween this year.  He made this awesome dual resonant solid state tesla coil (DRSSTC) hat! Last year he was responsible for the "Build a Fusion Reactor" Instructable.  This year, his likeness to a mad scientist seems to be increasing!  How long before we see him splice a tesla coil and a human?! More info on his blog: tc-engineering

Topic by T3h_Muffinator   |  last reply


How to make my own stereo portable speakers?

Hi there I have an Ipod, and I want some portable speakers... hopefully 2 small speakers for some portable music... Maplin has these speakers http://www.maplin.co.uk/Module.aspx?ModuleNo=3275 I Would be using the 87mm speakers Power (nominal):   8W Power output:   97dB Freq. range:   150Hz     -20kHz Resonance frequency:   550Hz     ±110Hz Impedance:   8Ω Basically what amplifying module would I need, and how would I wire it together?? many thanks Will

Topic by IllegalFun   |  last reply