Introduction
High voltage generator DIY projects are fascinating for electronics hobbyists and students alike. They are often used in Tesla coil beginner circuits, science experiments, and electrical testing. This guide will show you how to build a high voltage generator at home — a safe 12V-to-3000V DC supply using common components. Unlike complex Marx generators, this design focuses on simple high voltage circuits that remain both accessible and safe.
Required Components
Core Components
- IRF540 MOSFET – MOSFET high voltage driver
- Step-down Transformer (12V-0-12V) – reverse-wired for step-up transformer circuit
- High Voltage Diode (1N4007) – high voltage rectifier diode for output
Additional Materials
- 9V Battery & Connector
- Breadboard/PCB
- 22kΩ Potentiometer
- 1kΩ Resistor
Circuit Diagram
Below is the simple high voltage generator with IRF540 MOSFET circuit diagram schematic.
Assembly Guide
Step 1: Prepare the Transformer
- Connect primary winding (formerly secondary) to MOSFET
- Secondary winding (formerly primary) becomes HV output — making this a low voltage to high voltage converter
Using a standard 12V-0-12V transformer in reverse configuration:
Step 2: MOSFET Driver Setup
- Attach transformer primary to MOSFET drain
- Add flyback diode (1N4007) across transformer primary for protection
This DIY high voltage power supply setup boosts 9V input into a 9V to 300V DC generator.
Safety Measures
Warning: Output can exceed 300V DC. Always:
- Use insulated tools
- Discharge capacitors before handling
- Work on non-conductive surfaces
Remember: even a DIY high voltage arc generator can be dangerous if handled carelessly.
Conclusion
If you’re wondering how to make a 12V to 3000V converter that actually works, MOSFET gate drive is the key.
If you found this guide helpful, feel free to share your feedback. Happy building and keep innovating!
Published by: Robo Orion
Author: Md. Al-AMIN
Date: September 6, 2025
Category: Tutorials, Electronics