These Free Hydrogen Generator Plans are Open Source for You to Experiment in the Quest of Making Hydrogen
Adapt these free hydrogen generator plans for your experimentation, application and design.
Begin experimenting quickly by watching how to videos!
Watch a 3 part video on how to make an HHO device with stainless steel pipes.
Watch a 5 part video and supplemental videos on how to make an HHO PWM device.
Watch a Video showing a breadboard prototype that I made. The design is an easy to build MOSFET IRF510 and 555 Timer Pulse Width Modulation (PWM) Circuit demonstrating basic hydrogen production. Begin experimenting right now. The parts are easily obtained from Radio Shack and The Home Depot.
VERY IMPORTANT! These plans are for entertainment purposes only. I have not built or tested these plans. I intend to do so in the future. If anyone has built these and seen them work to produce hydrogen, please contact me at the bottom of this web page.
After you have seen and built the more basic circuit as described above, perhaps you would like to build the circuits below. Build a hydrogen generator with an NE555 timer, TC4420CPA MOSFET Driver, MOSFET IRF510, LM741 OP AMP, CD4069, resistors, diodes, and other associated parts. (not IFR510 but IRF510 - $2 at Radio Shack)
Car Conversion Kit and/or eBook
Parts List for Top Schematic
| Part | Quantity |
| LM741 | 1 |
| NE555 (Square Wave Pulse IC) | 1 |
| TC4420CPA MOSFET DRIVER | 1 |
| IFR510 MOSFET | 1 |
| 1N4007 Diode | 1 |
| LED (Light Emitting Diode) (Power ON indicator) | 1 |
| 100K Ω (Ohm) Resistor | 1 |
| 10K Ω | 2 |
| 2K | 1 |
| 1K | 3 |
| 2K POT (Variable Resistor) | 2 |
| 20K POT | 1 |
| 10 µF (MicroFarad) Capacitor (Cap) | 1 |
| 1 µF | 2 |
| .1 µF | 3 |
| .03 µF | 1 |
| 3300pF (Pico Farad) | 1 |
| .01µF | 1 |
| Breadboard (Radio Shack) | 1 |
| Jumper Wires (Radio Shack) (place these on your breadboard to interconnect parts) | 1 kit |
| Electrodes to run to your electrolyser unit | 2 |
| Dip Switch | 1 |
| Switch on/off | 1 |
| 12 VDC (Volts Direct Current) Fuse | 1 |
| 12 Volt Battery | 1 |
VERY IMPORTANT: These plans are for entertainment purposes only. I have not built or tested these plans. If anyone has built these and seen them work to produce hydrogen, please contact me at the bottom of this web page.
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What Other Visitors Have Said
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IFR510 Mosfet Car conversion kit/ e book 
Hi, my name is mike.
i bought the plans you have posted here, i liked the entire book it was very informative. i do not like the actual generator itself, …
Your circuit on the lm741 Not rated yet
Build it any way you like but the LM741 circuit does not work...! I'm trying to find someone who can tell me why.
Contact me on ogkyusa@yahoo.com if …
MR. Martin Not rated yet
In our diagram under the battery there is a line marked
THROTTLE and under that line it says 100K, as in 100 thousand ohms but you show NO resistor, …
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