3 Simple Ways to Share What You Make
With Instructables you can share what you make with the world and tap into an ever-growing community of creative experts.
Create on the go:
With Instructables you can share what you make with the world and tap into an ever-growing community of creative experts.
©Copyright 2013 Autodesk Inc. All rights reserved.
PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format.
You also have the ability to customize your PDF download.
![Simple High Voltage Flyback inverter [without feedback coil]](http://www.instructables.com/files/deriv/FML/E42Y/GLK0TLQR/FMLE42YGLK0TLQR.SQUARE.jpg)
Go Pro Today »
We're Hiring! »
Media hype aside, the established body of medical and scientific research on these compounds does not support your statement.
http://www.atsdr.cdc.gov/csem/pcb/
http://en.wikipedia.org/wiki/Polychlorinated_biphenyl#Health_effects
http://www.ph.ucla.edu/ehs/student%20hazards/PCB.pdf
It's your body; treat it how you will, but I urge you to please be careful about spreading misinformation such as the statement above.
Again, there are reasons that these oils have been banned since the 70's
Yes, a simple task like "pulling a transformer out of a PCB filled x-ray head" probably wont kill you. But what you are not understanding is that there is a probability that it will cause damage such that if x amount of people perform the same task y amount will develop a health concern, some of which might be life threatening.
And to say something like mineral oil is also a carcinogen is petty. It is a matter of degrees. You can burn you hand with a match but you can do a lot worse with an acetylene torch.
You are not using these materials responsibly and as you're the one disseminating this information it is incumbent upon you to address health concerns and to not offhandedly dismiss knowledgeable people like cablemonkey who are trying to help you.
Amen to that brother...
I think that most people, once they make a list of what they'd like to have on hand for projects, will find it cheaper to look online. It's fairly easy to show that is true if you're looking to stock up on about ten or so common resistor values, and very easy to show if you want to stock up on anything else as well, namely LEDs, transistors, 555 timer chips, hobby motors, switches....all the common project stuff.
Also, havent checked it out, but my mom works at a place where the buisness upstairs does neon signs. Potential goodies.
im sure if you crank it into kilowatt range you would experience problems,but compared to all the lame oscillators ive ever built (555 astable,transistor flip flop,L.C oscillators,positive feedback audio amplifier oscillators....) this one realy shines!!....i still need to get used to having my semiconductors totally cool and my 0.7mm wire smoking ,as other stuff ive built generally have bipolar transistors breaking out in flames ,for panzy wispy sparks.
thanks for the info about the separate mosfet supply,but i think ill stick with 120w it seems a lot "safer" :)
Read this, I hear evil chuckles of mad science delight....
And about the diode: I wouldn't say useful, as it is a regular slow diode and it will also probably die if you try to pull an arc through it. Some regular high current diodes in series would be much tougher than that puny plastic thing.
I haven't tested it, but the resistance from the assembly should be (diode resistance) / (# of diodes) because you're multiplying the area of the PN junction by (# of diodes). Since the cross-sectional area of a conductor is inversely proportional to resistance, and resistance is inversely proportional to current, by wiring diodes in parallel you should be able to pull more amps without subjecting each individual diode to more current than it's used to.
I've noticed that for passive components, you can (sometimes) multiply the voltage they can handle by wiring them in series, while you can (usually) multiply the current they can handle by wiring them in parallel.
This is one of the best instructables, i have seen so far.
5++++ and my vote for it. (The PCB-Lab, POV is in the same range)
I second, that not too many young people are interested in electronics. (Beside plugging in a game console...)
But there still are, you can see them here.
I made my Ham-license when i was 17.
I have a very funny story about my younger brother, a antistatic bag and a CW cascade.
I was hanging around in my room, playing with this CW, that was scrounged from a powder coating machine.
I had a grounding strap on the floor and a antistatic bag on it. (the metallized bags)
I zapped on the bag and after a short while, a spark ran around the bags edges.
I was quite amazed for a while, until i realized, that the spark vapourized the metallization on the edges.
I switched off the CW and wanted to discard the bag. Holy moly, i got a zap from the bag. After i thought about it, i realized i made a condensator by insulating the edges.
So i reloaded it and at that point my brother entered my room with one of his friends. He was around 8 then... I asked him, if he wanted a bag of electricity. He said, you can't put electricity in a bag. (Now he also works in electronics)
I teased him, ok, then take it.
The rest is history... and we still have a very good relationship.
You've really explained Every possible thing you can that's related to the MOT.
It's also nice that you are trying to get people busy with electronics as their hobby.
Greetings,
Electorials
Someone this far into HV really needs to build a Tesla coil though. Look forward to seeing yours in a future writeup.
My next project will be a DRSSTC.
MSDS for PCBs in case anyone is interested: http://www.gepower.com/prod_serv/products/capacitors/en/downloads/pcb_msds_pcb.pdf
You're right, the toxicity isn't too bad but it never hurts to be careful.
I do hope you win the Zing!
Side note: my first hand build radio was a crystal, with the added plus of a 3 stage transistor amp driving an 8ohm speaker.
I've been indecisive about trying to do a Jacob's ladder or your plasma speaker for my next project and this gives me so many more tantalizing options.
Well done, sir. You definitely deserve the laser cutter.
I see the problem you presented (in a strikingly eloquent manner) and I agree, almost no one does this kind of stuff anymore. Everything has correct spelling and grammar which is huge for me. I'm not sure about how far you'll get but I wish you the best of luck and if you manage to get this little business off the ground, I'll be sure to buy from it! You have my vote and I posted it on my Facebook.
I hope you win.
Thank You for all the work you put into this 'ible'.
I learned a lot of cool stuff and will be looking at
this post again and again.
I agree. I am one of the Older set here, and have been finding it difficult to find anyone in my area interested in any "electronics projects" at all, and only a few PC enthusiasts.
I started my Latest ible with the intent of starting at the very basics (super simple crystal sets) to a bit more complex (and making a radio almost completely out of stuff found in the home; and still no connection to the MAINS. :-)
You did a VERY thorough job here, and as a long time subscriber, have to say I am VERY impressed. Thank you for taking the time to share this with all.
As for the "+", I use + and - to differentiate between secondary windings on a transformer. In a center tapped transformer one HV output will always be negative while the other is positive, and therefore the + and - imply that the outputs cannot be tied together (unless you use diodes on both to make a full wave rectified output).
In transformers with only one secondary winding I designate the output with a +, mainly because transformers are most often used with a diode to create +HVDC rather than -HVDC.
Good work!
Starliner
what a resource! very nice job. It will take me hours to read that pdf, and it will be done with pleasure. love the reuse/recycle/retrofit existing and commonly available junk/components angle of all of this. Need more like this, to get good stuff out of landfills and being used again.
Your guide still rocks the socks off of everything. Relax! :-)
I wish you the best of luck <3
*Hacking; I use this not so much in the stereo typical software way, In context I mean to change or manipulate hardware, deviating the circuits, firmware and control software for your own desired outcome.
**Linux Vs Windows sure you can use Windows based systems to hack but it means mostly working illegal because of the high prices of software that might be required. Unix/Linux and deviates offer a alternative that is free and open source this means that you can change the world at no cost. Read up on open source and GNU.
Kind Regards
Nick Own
Fun is the key to getting people interested in this hobby again. If they chose they can go the analog route and design things like switch mode power supplies, or they can go the digital route and design embedded systems. It's entirely up to the hobbyist.
But I bought mine used, so it was much cheaper.
This
Rock on!
I'd like to see more 'ibles done with that accuracy.
By the way: I happend to have a <> transformer around coming from and old dead UPS. Could that be of any practial use?
It always amazes me what a few turns around a piece of iron can do.