Learn how to get the right amount of power to your HHO generator

Posted on 12/9/2008
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Getting the right amount of voltage    and current (amps)    to an HHO  or Hydrogen  generator is crucial to it's  efficiency.  
 
This short article will help you determain how much voltage and current you can factor in when designing your  generator and it's power supply.
Before everyone starts thinking that 6 cells is better than 7 cells, or 8 cells is better than 5 cells, first consider that before you can determine how many cells or "electrode sets" can be used at all - you must first determine what the amp draw and voltage input of each individual electrode set is.
 
 
Remember, heat is the  enemy!   
Stray voltage + excess amp draw = HEAT
Heat means steam and steam  / boiling goes into your  vehicle  intake.
 
We'll consider a straight series cell in our example, series meaning a + - + - + -  type configuration.
 
First you need to guess (guess low) at what weight or percentage of electrolytic water you are going to use (how much Naoh, So, etc.).
Do these tests with distilled  water  and your electrolyte  since it is the most insolated water you can get.
 
We'll test for voltage first, then figure out how many amps your cell can draw.
 
Put one set of your electrodes into an open bath of distilled water and electrolyte and connect them to a variable output power supply. Turn on the power and watch for gas bubbles to form.
If they start to produce gas at 2 volts, then you can say 2 volts is likely where your range is for input voltage per electrode set. Next, find the total square inch of one side of your electrodes - we'll use a 4"x4" plate as an example.
As a rule of thumb, most metals of the SS flare will draw .25 amps per square inch. So if your 4"x4" electrode is 16 total square inches you can determine 4 amps max per electrode set current pull. If you are pulling more than the max determined draw, reduce the electrolyte, if you aren't pulling enough - you may increase it, but start low and go up from there - constantly watching your voltage and amp meter.
 
So using that simple test we've determined that each electrode set produces gas at 2 volts so for a 13.x volt automotive electrical system I can use around 6-7 sets in my setup and draw around 24-26 amps of current. Anything over that will produce heat in my unit.
 
You will need a variable output power supply  and a good ammeter  to get actual results from your electrodes but if you don't have a variable output power supply you can use batteries in series to get a good estimate (in 1.2 volt increments).
 
 
 
In other words - if one D battery connected to your electrode set doesn't produce gas, but two together (2.4v) does then you can determine your electrode range is somewhere between 1.2 and 2.4 volts). It's not the most scientific but it will at least get your started.
 
These figures are arguable and objectionable by larger or smaller electrodes, different weights of electrolyte in your water (or the water used itself), if resonance is considered, and if cooling systems are used (for current draw).

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