Ok, so I have been working with many designs over the past 2 years. I recently set up a bench testing unit comprised of a dual 120amp marine alternator, unregulated, running 1/1 off of a one horse electric motor. I have been using a Smacks cell design for a while and have 4 identicle units. Within each unit I varried the amount of KOH and water levels. Here is what I have found. On an unregulated alternator I am able to produce 1lpm of hydrogen at 22volts and at 30 amps. This equals 660 watts. If I crank up the unit past this, it stalls the one horse motor. 1 horsepower is equal to 746 watts. So when I stall the unit, I am achieving 1hp, 746 watts. When stalled, the unit produces 15 volts at 50 amps, hence 1 horsepower, and about 1 1/2 lpm. Most people haven't set up a bench test to find out these specs, so it gives me a baseline to look at other options. Most of us would like to have a unit that produces 5-10lpm of hydrogen or more at 1hp. The amount of KOH does not really matter as the equation is linear. The more KOH, the more amperage draw, the less voltage produced, and back to 1hp. This is true no matter what the amount of surface area of the electrolyzer or amount of electrolyte and all the rest. If you don't agree, I would like to know why. Now... I have read about torrid coils and the use of a PWM with these units. I have several PWMs but as most of you know, they are really easy to burn up. With my new bench testing unit, you can pulse the field circuit on the alternator at less than 10 amps rather than pulsing the output... so that is not a problem. But who has experimented with torrid coils. I know that a coil will allow you to bump up the voltage output, but as the linear equation states, at a loss of amperage. I also know that resonance frequency of the unit is also important. Anyone done this yet? I would love to find someone that is producing more than 2lpm at 1hp and how.