Simple High Voltage Flyback inverter [without feedback coil]

Step 6: The schematic

Picture of The schematic
This is the schematic for your inverter circuit.
It will run on a 12-20V DC power supply (may also be a battery).

I'm using a 12V adapter which somehow gives me 17V output, and when connected it drops to 15V due to the internal resistance.

As you can see, we're using a side of the HV coill as feedback for the Gate on the MOSFET.
It will couse some kind of delay between each pulse which is sent to the primary coil.
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pnpnpn made it!2 months ago

I made almost the same circuit, except I'm using the feedback coil, and in my version there is NPN transistor, you can check my construction on:

The flyback transformer HV generator is a really stuff nice for experiments, for example Jacob's leader (my construction: ), Kirlian photography or Franklin bells. I also think, it's possible to build ion engine with it, but I didn't check if voltage would be sufficient. Anyway if you build one a device presented in this article or similar, those are interesting and relatively simple experiments wort to do.

In addition, if you have're going to obtain flyback from an old CRT TV or monitor, grab also a transistor that drives it, then there is no need to worry what kind of it should be used.

A device as presented in this article, when spark is present emits ozone, nitric oxides, X ray and UV rays, all are not good for your health, so don't run it for long period of time and preferably also not in closed not ventilated rooms.

mgingerich2 years ago
For some reason wall jacks always output way more volts than they say they will. I think it's just shoddy manufacturing. It could be that they're designed for a really specific load though
-max- mgingerich12 months ago

If the reciprocals are outputting ~169.6 volts, that is perfectly normal. You are measuring the peak voltages, not the RMS (Root-Mean Square) voltage. RMS is essentially the average of the absolute value of the AC waveform. It is literally defined as the equivalent voltage/current/power delivered to a resistive load, such as a heater or Edison lamp. Also they are not designed as labratory power supplies, so they are crude in the fact that they have high tolerances.

-max-12 months ago

You should add a few TVS diodes, MOVs, or at least some zener diodes between the gate and drain of the MOSFET, to prevent a high voltage transient from destroying the fragile Metal Oxide Layer between the gate and the rest of the Semiconductor Field Effect Transistor.

can you please help this won't work!