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This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up to about 30KV, depending on the transformer used. It is cheap and easy to make, thanks to the standard TV flyback transformer used. It can power LASERS (although I have never tried), demonstrate St.Elmo's fire, and even cause a fluorescent bulb to light from as much as 2 feet away.
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|Hello there, Thank you for this wonderful circuit. I have two questions: 1) Is this the same circuit for VIOLET RAY WAND? 2) Is there a video showing how to make it step by step?
|About a month ago I read where someone was using a stun gun to launch potatoes. Well I got on ebay and purchased one for about $5.00. I've tried it out on several spud guns and it works quite well. Was Actually cheaper than a $6.00 lantern igniter. Spark is much thicker and goes further than one of those Piezo igniters. It also comes with a rechargeable battery! Lookup Viper stun guns on ebay, I think you'll be surprised at how cheaply you can get them! Dave
|Can this light my house free electricity?
(Editor's notes: Yes, of course.)
|I have been reading the comments and just wanted to add that this circuit does create a hi frequency resonance. This is caused by the switching times being set by the saturation of P1 (A,B). this means that once the circuit starts, It allows the power to flow through the primary in one direction (we will assume Q1 switches on the first time as this is down to very tiny differences in the transistors as to which one starts). The flow will the switch the other way as the base of Q2 exceeds 0.6V. at the same time as doing this, the voltage at the base of Q1 is continues to fall to the switch off point. This works because both the primary and P1 are centre tapped, with the centre being ground. A couple of things to make note of are.... Always us an AC flyback transformer not a new DC type. Make sure your flyback is ferrite cored and is gapped as this is what helps to set up the resonance. And lastly, If you add a spark gap to the secondary output, the circuit becomes safe to use even when your grounded as high frequency, high voltage with ultra low amps is the only thing that can pass the gap.
|I have made a arc welder from microwave transformers that works very well. I would like to add the ability to tig weld. I have all the required equipment to TIG weld (argon/CO2, hoses,cable, tig torch, tungsten,ect.) except for the high frequency AC voltage that would normally be provided by the welding unit. If anyone has any input on how to add a high frequency AC mode to the homemade welder please let me know.
|This circuit looks good, but I think its incorrect to claim it as "high frequency". It appears that it runs at 60Hz AC. This is incredibly LOW frequency for a tesla coil. The point of the coil is to create a resonant effect. To do this, you need very high frequency that matches the resonance of the coil. Also, this circuit is very dangerous because the pulse durations are so long. A super high frequency circuit with very short duty cycle (Pulse ON time of less than 50 microseconds) is much safer and will even be far more powerful. I recommend reading Tesla's patents and studying other info on Tesla coils.
Nonetheless, great work and thanks for sharing!! :)
(Editor's notes: The circuit doesn't run at 60Hz. Its frequency is mainly set by the characteristics of the transistors and the primaries of the flyback. Flyback transformers don't even work at 60Hz.)
|Does anybody know, where to get already done product to buy like for example:I would like to have something like input: 3V - 12V output 500V - 1kV. I dont know even where to look, I was looking on google I couldnt find even one product.
|what is the voltage input to T1 and what is the output voltage of T1 and what is the input voltage to T2
|i've made a ps with fly trnsformer,and it works but... what should i do with the other pins? sometimes spark occured between them. especialy some closest pins with ground pin. one of pin closest is also draws purple spray, but never spark
|ZVS inverter or mazzilli inverter is the best flyback driver using IRFP250
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