DAZO HHO PWM ( Pulse Width Modulators ) FOR FREEZING TEMPERATURES
The PWM has become the new standard for current control for Advanced DAZO HHO Kit enthusiasts. Rather than just straight current flowing into your generator, these PWM boards control current and the resulting heat that can sometimes be a problem, by pulsing off and on rapidly. Some pulse at a fixed frequency, with current adjustable. Others allow both current and frequency to be controlled like our Heavy Duty 30 amps.
DO I NEED A PWM? That is a common question. If your HHO kit is cheaply made of acrylic or PVC that melts at 180-190 degrees F, then YES! If you don't control the current it will melt around the terminals and leak. Ours are designed to withstand even constant currents of 50 amps+ without damage. They don't need one to regulate current for protection like cheaper models.
FREEZING TEMPS? YES! You should get one in Extreme Freezing Areas, because the electrolyte concentration can be increased with a good PWM preventing freezing to - 40 degrees F!
30 AMP PWM Assembled in a Project Box! They are built using the Heavy Duty 30 AMP PWM and come with a fan and dial controls for adjusting the current AND frequency (Actual product may vary from picture). Current boxes do NOT come with an additional on/off switch as shown in photo. They DO come with a single fan, dual mosfets and heat sinks and two controls for current (amperage) control and frequency. Size is approximately 3"W x 4-1/2"L x 2-1/2" H. Powered by 12 volts- can be set up for 24 volt by special order. each connection is split into 2 terminals for power in + and -, and power out to load + and - for a total of 8 terminals to divide up the current.
These are nice units and come with ventilation slots cut into the sides to allow air to be drawn up and over the cooling heat sinks. Holes are pre-drilled in the back for the wires and connectors to attach to the board inside.
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