How to take apart a USB plasma globe, which contains a tesla coil, wire it to work on a battery, and get neat little sparks from it. It can set thin paper on fire ... and it does something weird when a magnet gets near it ...
As I will explain later this deals with HIGH VOLTAGE so please, if you are a minor, do this with the supervision of an adult, and if you are an adult, dont do this alone in case you zap yourself and need CPR. Warning! Danger!
That said, I got this globe at Best Buy for $20 bucks (USD) in the computer section.
As I will explain later this deals with HIGH VOLTAGE so please, if you are a minor, do this with the supervision of an adult, and if you are an adult, dont do this alone in case you zap yourself and need CPR. Warning! Danger!
That said, I got this globe at Best Buy for $20 bucks (USD) in the computer section.
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on the bottom will be screws ... use a philips head screwdriver to remove them, then put the screwdriver into one of the screw holes to gently pop out the bottom of the base
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more flyback information
one month ago, i would agree with you, but, i can't
Listen the name and the term, FLYBACK is being used in general, but the real meaning is a litle bit diferent. the so called AC flyback transformers aren't flybacks at all, but they are being so called just to refer to the todays HV transformers...... what i whant to say is. the old AC flybacks where AC. the thing is. for the tv tube you need dc. and in the old tv'os you got it from a AC transformer and some multiplirers like this http://www.play-hookey.com/ac_theory/ps_v_multipliers.html
The so called AC flybacks where flybacks,! but the flyback was concidured the AC transfrmer + the multiplier, because with it it is a flyback, but when you remove the multiplier. it is only a AC transformer, and i guess you didn't connected a multiplier to your diy transformer???
The new flybacks work the same way but you can't remove the multiplier without destroying the flyback.... because of the epoxy reisin.
Conclusion
every transformer being driven with a single positive puls waveform and a one way anty directional rectifier is a FLYBACK.
And all the other transformers aren't!!!!!!!!!!!!!!!! was that clear?
you misunderstand the definition of flyback.
a voltage multiplier is not needed to make it a flyback. it is the type of coil that makes it a flyback.
build your own, then you will understand.
What is a transformer.??? it is some kinda device that transmits energy between two coils. without physical (wire to wire) contact . There are some cored transformers and some without cores.. the core is critical because the different core need's a different freq to work properly. For instance. the metall core is ment to work on 50/60 Hz.. ok, the losses are high but who cares... the industry dosen't .. and there are the ferrite cores .. depending on the mix of materials the freq are higher... and there are the air coiled transforers.. like the sesla coil...
A flyback is a transformer driven by a positive squere-like vave signal. ( no negative , below the ground zero voltages accure from the source) on the primary and with a half-wave rectifier on the secendary. ( multipliers are also rectifiers!!!!!!!!!!) and that is a transformer. a FLYBACK! transforer.
the airgap in the coer is to improve the efficiency and decrease flux going aroud and messing up radio signals!
Over all, the FLYBACK is the most effective way to make a power supply.. because the losses are smaller then by any other way you could make a supply! take for instance the SMPS .. also flybacks...
If I'm wrong, plese truy to explain what am i missing!
If you mean by a regular transformer the thing the industry Puts in some devices , then yes( newer day's they are putting SMPS . they contain the flyback design, they are light weight, more efficient and cheeper!)
But, FLYBACK'S are just transforers that aren't that simple like the old ones!!! but work rather good for some time... (a litle bit longer then the warenty of the device) because they need the certain feed, and control. with much electronics.. witch is complicated compared to the old one. with just a fiew colils and a metall core. with no big electronics!!!!
Power Transformer Design
Inductor and Flyback Transformer Design
They shure loock diferent. and taste diferent. but they both obay the same law of physics!!!!!!
My point was. a flyback can't be a AC transformer, if that says somewhere in the second toturial you posted above. about flybacks... plese tell me what the page. because i read 10 times that.. and I'm layzee to read it again! ( I awiusly missed that part :-/ )
My conclusion :
---Power transforer:
AC input <=> AC output
---Flyback
DC->into a driver-> into a transforer =>DC output
---Pulse transforer (SMPS)
DC->into a driver -> into the transforer -> AC output -> into a rectifier =>DC output
--- in case of the SMPS it looks like a flyback, but it isn't cuz it goes a AC squere like vave into the pulse transfmer and AC goes out that is turned then into DC. the mutual thing of the flyback ant the pulse transformer are the airgaps and the ferrite cores that leed to high work freq.
What is wrong with this conclusion???
Thanx for the paitence and for the help!
We began the Tesla by testing the small Plasma globe I bought at the smithsonian and found that a magnet did not read anything sitting on top of the globe. When we put a 2 x 2 inch x 1/4 thick piece of copper though, it read 200 or more volts.
I did not read the current, but that would only be to connect the meter in series with a wire wrapped around the base of the globe (bare) to a ground which we have been hammering a steel rod into the ground 2 feet. Ultimately a copper rod hammered or dug to a depth of 8 ft is Ideal.
If you stick a plasma globe (just the globe by itself, I mean, without the power source) on the breakout point of a Tesla coil, you should get some nice results.