Pulse Width Modulator (PWM)
Do I Need One?The short answer is only if you want to maximise your HHO production and reduce the heat generated.
Many people do not use these, they connect their generator complete with amp gauge and then slowly introduce their electrolyte until they have an amperage and volume that they are happy with. The more electrolyte you use will produce more gas, but will increase the amperage that will make your cell run hot. It is also worth noting that the further the plates are away from each other, the more resistance there is and the more amperage and heat there is.
What Does A PWM Do?Basically, it is a device that does two things
1. It regulates the power feed to a Hydrogen Generator Cell. Less power equals less amps equals less heat. The problem with less power also means that you will get less HHO production.
2. It changes the frequency range harmonics between 40hz and 400khz allowing you to get maximum production to the design of your cell.
Why Would I Need To Control The Frequency?Most PWM’s on the market are pre set to a specific frequency and can only be changed by using a very small screwdriver on one of the electronics components. Because there was a growing demand to make this easier they are starting to make some PWM’s with control knobs so the frequency can be changed with a twist of your fingers.
The legendary Stan Meyers is renowned for being a pioneer in advanced Hydrogen production and he developed a way to apply frequency control to his generator to get good production from plain water with no electrolyte.
I do not claim to be an expert on this, but from my research and understanding, each cell responds to a different specific frequency to give it maximum production. When the correct frequency is found there will be HHO production between the plates and not on them.
Confused yet? – It is a bit of a brain drain unless you are a Tech. (and I am not)
To try and demonstrate the frequency control, I have found a Youtube Video that is pretty good.
How Can I Find What Frequency Is Best For Me?Most PWM’s are preset to a frequency that will allow you to throw it straight in your car and start using it.
If you want to fine tune the PWM to your specific cell, unless you have all the expensive testing equipment there is only one way – Lots of production testing in your workshop.
*Set up your generator for production testing with your PWM connected.
*Fill with Distilled Water (no electrolyte) and turn on.
*Play with the power, amps and frequency checking the time to produce your HHO gas. Remember that the aim here is to use less power so as to not produce excessive heat.
*Establish what power and frequency produces the most gas.
*To increase production now that you have found your settings, slowly add electrolyte and monitor the temperature. You may need to turn down your power to control the temp.
What If I Produce Too Much HHO?Your engine is constructed knowing that fuel burns slowly, so the fuel is introduced into the cylinder on the beginning of the piston upstroke. Before the piston reaches the top of the cylinder the timing ignites the fuel so it has time to burn before the piston starts its downstroke. Introducing Hydrogen into this process increases the flashpoint making the fuel burn faster and too much will complete the combustion before the piston reaches the cylinder top. If this happens it will apply downward thrust while the piston is still trying to reach the top of the cylinder. The result is decreased engine power and economy.
The lesson to be learned here is that you simply want to assist the complete combustion of your fuel. If you want to start running your car on huge volumes of HHO you will need to retard your timing and this is no easy feat for modern computerised fuel systems.
This information is the result of my own research into "What a PWM is" - If you are able to add any information please post a response below for the benefit of our Forum Visitors.
There are many suppliers on the web as you will see if you google PWM - Below is a good one we have found at a good price.
 | This is a Pulse Width Modulator (PWM). Use it to regulate the amperage / power delivered to your HHO generator. Different Generators work better at different amperages. Wiring details are supplied with the unit. Pricing at the web site. | |
