Introduction: Building a High Voltage Power Supply Using Microwave Ovens βš‘οΈπŸ”Œ

DISCLAIMER: The information provided is for educational purposes only. Attempt these activities at your own risk. We are not responsible for any injuries, damages, or legal issues that might occur. Always ensure safety and abide by all laws and regulations.


For the ultimate MOT-powered arcing setup, you'll need a selection of components, a safety-first mindset, and consistent focus. Without these, one may end up in a potentially fatal situation.

Step 1: Obtaining the Parts!

Here's the list of the components required for this setup:


1) Between two to three MOTs. Three is preferable as one can be utilised for ballasting.Β 

2) An appliance such as a hair dryer or toaster - this is for ballasting your transformers. This component is only needed if you can't acquire three MOTs.

3) Four microwave oven capacitors, henceforth referred to as MOCs. They are integral to resonant procedures.

4) A motor start capacitor or a similar value component to function as a PFC capacitor. Values above 20uf for >230 volts, and above 300 Volts are preferable. For voltages around 120, an 80uf rated for >200 Volts will work. Make sure they are AC type capacitors!

5) A 10-15 amp Circuit Breaker for ensuring safety.

6) A switch rated for 120-240 Volts.

7) A generous supply of wire, including a 3 pin grounded wall plug.

8) A minimum of a 2-foot length of PVC or insulating electrical conduit. It will be used as a 'chicken stick'.πŸ”πŸ’

9) A stable wooden base for setting up your equipment.

10) Dark sunglasses or a welder's mask. The arcs are exceedingly bright and can cause significant damage to your eyes. Please use protective eyewear. 😎 

11) And most importantly, a generous dose of common sense!


The image included depicts my existing arcing setup. Currently, it's arranged not for creating long resonant arcs, but rather shorter, stable arcs

Step 2: Putting It Together!

The following section is dedicated to providing you with a detailed guideline for setting up. Included is a schematic.


1) Prepare the base by arranging the MOTs on it. If there are three MOTs, position two side by side (while ensuring they don't touch) and one in front of them. If there are only two, simply place them side by side without them touching each other. Secure them to the board with a screw.πŸ› οΈ

2) Wire your switch, circuit breaker, and plug that connects to the main supply. For the primary line, connect it to your circuit breaker in series, then to your switch, and finally your PFC capacitors. The neutral line goes straight to the PFC. The ground or earth line connects directly to your MOT's Ground connection. If you have a metal switch box, ensure it's grounded.Β 

3) Place your PFC capacitors in parallel with your neutral and primary lines, connecting them to your MOTs.Β 

4) Connect your MOTs. Remember that it's important to connect the power phase in parallel to allow arcs to be drawn instead of short bursts of flame.πŸ”₯

5) Wire the Output by identifying and managing the secondary windings.Β 

6) Ensure the ballasting responsibilities are handled by connecting your third MOT.Β 

7) With your MOCs ready, assemble the resonant capacitors.Β 

8) With everything wired up, click on all your switches and prepare to draw those massive arcs! However, remember to protect your eyes – the brightness is more harmful than watching someone weld.Β 

Step 3: Final Product!

And that concludes the guide! If I've accidentally omitted information or if there's further details to be added, feel free to inform me. Thank you.