Make an Ultra Simple High Voltage Generator





Introduction: Make an Ultra Simple High Voltage Generator

About: ––––––––––––––––––––––– "Energy cannot be created nor destroy...

Have you ever wanted to build a high voltage devices to make sparks like Tesla Coils, Marx Generator, and so on.. But find it too compacted or difficult to build?

Well, this instructable is for you! It can make create a few kilovolts of static-like sparks, and best of all... You can make it with only two things to make it, a battery and a simple mains transformer!

Before you continue, you should know a little bit of information about transformers, click here to find out.

Step 1: Get the Things!!

Like I said, you need only two things to make it, well, actually, three things - some wires.

  • 9 volt battery.
  • Mains transformer
  • Wires

The mains transformer, you can find those in just about any mains powered electronic devices, like VCR's, stereos, and stuff like that, you can also use a wall wart if you want. The best mains transformers you could ever use is found in digital alarm clocks.

Unfortunately, I burnt up all of my alarm clock transformers while ago... :( So I will have use a transformer from a VCR.

Step 2: Wire Up the Transformer

Okay, before we attach the wires to the transformer, you need to take a look at it first...

The two leads of the transformer that are connected to the mains power source, is the primary (the high voltage side), and the other two leads are the secondary (the low voltage side).
We are going to connect the transformer in reversed, I mean the primary (the high voltage side) of the transformer becomes "secondary" and the secondary (the low voltage side) becomes "primary".

So we are going to connect the battery on the primary (the low voltage side) of the transformer and we will get some sparks from the secondary (the high voltage side)!

Right, attach the wires to the transformer!

Step 3: Connect to Battery and Have Fun!

Connect either one wire from the primary (the low voltage side) to one terminal of the battery (don't worry, you can connect it any way round). Then bring two secondary wires (the high voltage side) very close to each other (about 2 mm) and then tap the other primary wire to the other terminal of the battery.

And then, you should see sparks on the ends of the secondary wires, and you may hear a little "snap" too!

Step 4: Add a Switch

Instead of tapping the wire to the battery which can be a bit difficult, you can add a push-button (don't use the push-lock switch) switch into the circuit if you like...

Step 5: Enjoy!

Well, I hope you find this instructable useful to you, and if you need help or have some questions, or found a error, please make a comment! I like comment! :)



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can i use a dvd player transformer or a transformer from a mobile phone charger etc?


Hello, has anyone tried this? I am woking on a show where we want this on stage. How safe is this around people? What do you suggest for this effect without hurting anyone?

2 replies

First off, make sure you bring in your electrician/lighting team and talk with them about using an effect like this. I've run similar effects and without proper protections, it can really mess with the data streams for the lighting. Also, note that to be seen well from a stage, you will need to scale this up a good amount. After all of that, make sure that every single person on the stage is taught how to safely be around it. While it should be fairly safe for someone who knows to safely maneuver around it, a random extra or guest getting injured by this can have very bad consequences. Shows can even be shut down if someone gets injured, as most stages really don't want a lawsuit on their hands. Basically, if you do it safely and communicate with the entire team, it can be an amazing effect and is definetly worth pursuing. Good luck

It can't hurt much the worst it will do is give you a little shock that doesn't hurt that much.

hi you using battery how DC will work with a transformer?

1 reply

the spark gap creates an alternating current that can pass through the transformer

i like it
Thnx man
i finally found a way to automatically ignite my flame thrower *-*

will it give continuous high voltage supply...

check this out ppl... look how does 3.5 MILLION VOLTS look like .... beautiful

So I have to repeatedly switch the current on and off, amirite?

11 replies

Could you wire a 555 circuit to switch it for you? I can see no reason why not. Does anyone else see a reason that you shouldn't do that?

To keep it simple..

I believe it will work. I'm trying that myself.

a 555 can only source 200 mA of power. is that a problem?

Just use a big MOSFET, like the IRF740 or so...
And, if you use a Powertransistor, dont forget to use a diode anti-parallel to your transformer. in case you dont, it could Kill your transistor!

yes especially when charging a capacitor bank. That is why is use zvs driver

Would a Pulse Width Modulator "PWM" work in place of the switch? Just curious.

use he pwm signal to drive a transistor to pulse the battery

Square wave generator is better, use a irf620 and a astable 200 hertz 555 circuit