by SeaMonkey » Sun Jun 15, 2008 4:41 pm
The Smack's can have a severe heating problem if it isn't constructed "exactly" as the plans recommend.
In order to minimize leakage currents around the "neutral" plates it is important that they be spaced and paired according to the plans.
The spacing of the plates should be like this:
Pos.Neut......Neut.Neut......Neut.Neut......Neut.Neg.Neut......Neut.Neut......Neut.Neut......Neut.Pos
If all the Neutral Plates are equally spaced you'll have too much current leakage around the plates through the electrolyte solution which will cause the high temperatures.
To control the excessive heating and enhance the efficiency of the unit, it is necessary to use a MosFet Pulse Width Modulator capable of switching up to 40 Amperes at a 10 KHz to 20 KHz rate. Following the PWM a home-made inductor must be installed in the feed wire to the Smack's, and a High Current Schottky Diode rated at 40 Volts/60 Amperes installed across the wiring as a Free Wheeling Diode to make a high efficiency DC to DC converter.
This circuit will reduce the current demand from your automotive electrical system and increase the efficiency of the Smack's production of HydrOxy.
If you have electrical/electronic skills you can make the entire unit for a total cost of approximately $15 or less, depending upon where you purchase the necessary parts. Or, if you have a friend who is able to perform the electronic construction and could assemble it for you you'd save a bundle instead of paying the high price for an already assembled unit from most suppliers.
The circuit is really very simple and very efficient, and enables smooth control of HydrOxy generation by varying the Pulse Width with the Adjustment Potentiometer.