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ArcticMyst Security by Avery

High Voltage Powersupply Info

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Oct 25, 2012
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This is a tutorial not a question.
DANGER: HIGH VOLTAGE CAN BE DANGEROUS IN ALL WAYS. ARCS AND SUCH CAN PRODUCE OZONE WHICH IS SERIOUSLY CORROSIVE. AND IS TOXIC. I AM NOT RESPONSIBLE FOR ANYTHING YOU EVER EVER EVER DO WITH THIS INFORMATION I POSTED HERE

I don't know if this was discussed before or not. I just happen to know alot about high voltage. And it seems that you guys use high voltage for gas lasers.. So if you are interested in a DIY powersupply i can give you atleast.. Some steps..

First i don't know whether ac or dc is used with those lasers so i will post steps for booth.

First the easiest ( ADJUSTABLE OUTPUT ) the single transistor flyback transformer driver.
They commonly use a 2n3055 transistor which is dirt cheap.. The circuit is made of 3 components
2 resistors and that one transistor. The circuit is really easy to make. wont take a few mins..

Most modern flyback transformers can be had for like.. free or 1 or 2 bucks.. they output dc. For ac. You have to wind your own flyback transformers. You can just use some really simple mathematics to calculate the V/turn at a chosen frequency.. Use the frequency with the chosen driver. And voila.. If you need dc. Then be warned. The home made flyback transformer outputs in the kilo hertz range of frequency.. You can rectify it. with 4 proper diodes. And a capacitor if you desire.. But the capacitor part will be seriously hard though :)
For details on the single transistor driver.
POWERLABS' High Voltage Solid State Flyback Driver
Home made flyback. running on the single transistor driver i guess..
Homemade Flyback Transformer - YouTube
You might be wondering. I work on lasers. not with transformers..
Well

The Fryback! | Adam's Science Website

He was using the zvs driver. Made by something mazzili though.. don't remember also called the royer driver. And can be used for induction heating. too. but we will be discussing that sooner on

Here is the improved schematic for the single transistor.
2n3055 flyback driver | Kaizer Power Electronics

The double transistor flyback driver. Never tried it.
http://wiki.4hv.org/images/7/79/2n3055pushpull.gif
Virtually just like the 2n3055 driver. Just with a completely different circuit. And higher power outputs. Also this circuit is prone to failure :(
You can use other transistors than the 2n3055. But use stronger. Not weaker

Now adjustable frequency drivers. Those can be audio modulated. And are the best if you are willing to count the v/turn at a desirable frequency.
Simple PWM Flyback driver tutorial
Everything is stated there :D
Efficient PWM driver (flyback or other applications)
This to :D
REMEMBER.. with a modern flyback. Then high frequency is at the input. Not the output. i think though :D

Now the most powerful driver..
How To Build A Simple But Powerful Flyback Driver
The zvs driver. Everything is included there.

Now that is the END OF THE FLYBACK SECTION

Now to the microwave oven transformers
I was going to say the i am not responsible stuff at the beginning and at the end of the thread. But here i give you another one here because they are SO DANGEROUS One of the most dangerous things you can ever EVER mess with.. I am not responsible for your actions using this information

So as you guessed. You find those. in a microwave :D. You can also find a little neat inverter there. I never found one personally. so i don't really know.. But i think this should work tooo.... any way those transformers are really bulky heavy monster things. Those tiny bastards give you 2000 volts at about 500 ma. Some can spit a complete amp too. Very dangerous. You need about 10 ma to disturb the heart. ...

If you are not careful. Things like these could happen. in your brains :(
2 mot 6 cap sparks high voltage - YouTube

Don't get that scared. those are resonant arcs. The normal one doesn't output that. But that just gives you a idea how much to be scared of them.. The nice thing about them is that they need no driver :D :)
The maximum you can stack safely are 3 in series. Don't stack more as voltage will cause interlayer arcing. Really hot large arcs in the transformer. Btw a arc is a spark. That continues . Not for a micro second.
They output 50/60 herts

That's the end of this scary section. the mot section. In a language if you spell mot that means death :(


Now to a xray transformer. Those can output 160kv.. Are seriously expensive. And i doubt you would need them anyway. I never had one myself though. But i feel like i should just state it here though.


Dont read this section if you don't know what your doing. Seriously
There is a pole pig.
pole distribution transformer.
IS a transformer used to step down the high voltage from those noisy generators to a nice safe 120/220 volts at 50/60 herts

We use them in the opposite directions
instead of like 1 million volts in. and 120 out
its like 120 in and 1 million volts out. Now 1 million volts will never be the output. It's just a joke
Those monsters are filled with oil. Thier super heavy duty.
Rumors say that at resonance. Perfect unballasted resonance They output like 6 meters arcs. look but don't touch.. XD They don't need a driver though.

voltage multiplier. pulsed output. Can make a arc (continuous output) with a very high resistance resistor on the output.
High Voltage Power Supply For Marx Generator It is a voltage multiplier
MARX GENERATOR. For pulsed output only. This device is so so so so so so so so so so so so so dangerous. Capable of up to 10 million volts discharge at a few amps. Yes amps. and is capable of more too.
Build a simple Marx Generator

This is a simple quick and dirty one. If you make a dedicated one. The output is much higher. and the input shouldn't be a voltage multiplier only. IT can be a flyback transformer. Mot anything. just make sure the output of the thing to charge it is Dc


Well i can add more if you guys feel like i should.
continue
All the credit for these informations goes to the great ones who teached me.


DANGER: HIGH VOLTAGE CAN BE DANGEROUS IN ALL WAYS. ARCS AND SUCH CAN PRODUCE OZONE WHICH IS SERIOUSLY CORROSIVE. AND IS TOXIC. I AM NOT RESPONSIBLE FOR ANYTHING YOU EVER EVER EVER DO WITH THIS INFORMATION I POSTED HERE
If such stuff is already posted the moderators feel free to delete. :(
 
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phenol

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Re: Gas laser powersupply

OK, many but not all tv FBTs have rectified outputs. for instance, i have an ac output flyback and i only had to add litz wire primary to drive a tv multiplier (actually 2 in parallel) powering a co2 tube in excess of 10mA
 
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Re: Gas laser powersupply

This is not a tutorial on gas laser power supplies, this is a quick explanation of a few common high voltage sources.

Most of these won't work at all for gas lasers, and the few that could, you make no mention of how to actually incorporate them with a laser.
 
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Re: Gas laser powersupply

Remember :p am actually with only 1 DIY red burning laser. And a busted greenie. And i though those could be helpful. Just trying to help..
 
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Re: High Voltage Producing Devices Info

Interesting HV stuff.... but yeah...

I'd change the Title to something like "High Voltage
Producing Devices Info" or something similar.

The Title is misleading... I wouldn't want to use most
of those HV devices on my Laser Tubes...:eek:


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
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Heads up!
Quite a few of us on the forum have either used HV equipment for work, or in association with gas lasers (HeNe, Ar ion..etc)
and most of us here are familiar with ZVS drivers, CW multipliers, Marx impulse generators, Tesla Coils...etc
This is not what I'd call a tutorial.
Also , please be aware for safety's sake, if you decide to use HV supplies
that you do so with someone else around.
All it takes is one accident.
HV capacitors, especially those intended for Pulse Discharge are very lethal.

Sounds like you need to do a little more reading.
 
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Eh, none of what he mentioned is lethal except the MOT and pole pig.

By the way, pole pigs are typically in the range of 7-20kV I believe. There's no way in hell that 20kV is jumping 6 meters of air - you'd need many millions of volts for that.
 
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Sounds like you know just enough to get yourself hurt :eek:
 
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Eh, none of what he mentioned is lethal except the MOT and pole pig.

By the way, pole pigs are typically in the range of 7-20kV I believe. There's no way in hell that 20kV is jumping 6 meters of air - you'd need many millions of volts for that.

The ZVS driver is more than capable of delivering enough current for defib.
40Kv at 1-5mA is possible with a flyback.
Right, the MOT and the Pole Pigs are most certainly lethal supplies. 500mA to 1-3A out!
Seeing is that this poster is new, I am suggest he play it safe.

We don't want dead members!
:wave:
 
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40Kv at 1-5mA is possible with a flyback.
1-5mA isn't lethal. Most sources I've read take at least 30mA as the minimum to pose a risk of death. Sure, one in a million people might die at 10mA, but one in a million people would die from tripping over a log, too. That's not to say I'd recommend putting logs on sidewalks. But at the same time, it's a bit silly to tell people that logs are death traps :beer:

Be careful: agreed 100%
Flybacks kill: not so much
 
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1-5mA isn't lethal. Most sources I've read take at least 30mA as the minimum to pose a risk of death. Sure, one in a million people might die at 10mA, but one in a million people would die from tripping over a log, too. That's not to say I'd recommend putting logs on sidewalks. But at the same time, it's a bit silly to tell people that logs are death traps :beer:

Be careful: agreed 100%
Flybacks kill: not so much

Well, true 5mA generally isn't lethal for the average person, 40Kvdc @
5mA is the start of where things do get nasty.
***10mA and you cannot let go of a wire since your muscles start to lock up at this current.
The higher the voltage, the easier the current to flow into the nervous system and start causing all sorts of chaos. :wave:

There is a great link below, showing the 10mA - 100mA line as being the line between a non lethal "shock" and a "potentially" life threatening shock with the upper range next to 100mA being "lethal".
30mA neon Xmfrs are labeled as being a DANGER Lethal shock hazard for the very fact that your muscles loose complete control, even though it is well below 100mA.

Electrical Safety: The Fatal Current


Again, as you've noted best be safe than sorry. I think the above link
really puts things into perspective regarding current and lethality.
 

Things

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No way a pole pig is going to be throwing 6 metre sparks unless you're in a substation shorting out ones the size of a house. While it is true you can pull some quite long arcs, the arc length once the arc is already established is mostly determined by current.

The higher the voltage, the further a spark can jump, the higher the current, the further you can pull an arc out. Not enough current and you can't sustain an arc, not enough voltage you can't start an arc. You can pull MOT sized arcs from 240V mains if there's enough current behind it.
 
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phenol

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While we are on the war of attrition thru electrocution subject, it's only fair to mention that the feeling (or the lack thereof) of shock heavily depends on the frequency of current. It tends to flow in funny ways and paths as frequency goes up (the skin effect). Not one time have i touched the raw AC output of high frequency flybacks and while the feeling is beyond description, so is the smell of roasted skin. I have also come in accidental contact with the even highter frequency output of HF/VHF power amplifiers (50-100W) or with some resonating components (inductors mostly) and while the feeling of muscle spasms is totally absent, the smoking skin is not.
 
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Electrical Safety: The Fatal Current:
"the only reasonable conclusion that can be drawn is that 75 volts are just as lethal as 750 volts"

zc9cb.gif
 




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