Pulse Width Modulators or PWM can limit the amount of current that an HHO generator draws and keep it from going beyond a set amount. It controls the amount of amperage your hydrogen generator uses. The higher the frequency generally the more efficient you HHO generator will be with less current while controlling temperatures.

You may have asked yourself what is the purpose of using a 30 amp pulse width modulator with a HHO generator?  PWM controllers help to maximize HHO gas production with available current. You can also use 60 and 80 amp pulse width modulators for larger projects.

A PWM pulses the plates of your HHO generator several hundred or thousand times per second. By doing this you can use lower voltage and less current and the electrolyte operates at a lower temperature.

12-40V 30A 360W Hydrogen Booster HHO PWM Controller
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Time Remaining: 6d 4h 26m

HC3020 - HHO PWM LCD Digital Programmable Regulator 600W 12V/24V (30V max)
HC3020 - HHO PWM LCD Digital Programmable Regulator 600W 12V/24V (30V max) $130.00
Time Remaining: 27d 11h 59m
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10-50V 40A DC Motor Speed Control PWM HHO RC Controller 12V 24V 48V 2000W MAX
10-50V 40A DC Motor Speed Control PWM HHO RC Controller 12V 24V 48V 2000W MAX $14.24
Time Remaining: 26d 7h 44m
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HHO RC PWM DC Motor Speed Controller Driver DC9V-12V-24V-28V 30A 800W IGBT 12KHZ
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Time Remaining: 1d 3h 42m

MXA033: DC MOTOR HHO / PWM SPEED CONTROL 15A MAX PWM 12V / 24V ASSEMBLED KIT
MXA033: DC MOTOR HHO / PWM SPEED CONTROL 15A MAX PWM 12V / 24V ASSEMBLED KIT $17.00
Time Remaining: 2d 19h 50m
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DC 12-30V 30A 360W PWM HHO Controller With Cooling Fan
DC 12-30V 30A 360W PWM HHO Controller With Cooling Fan $31.00
Time Remaining: 2d 4h 55m

Hi-Q Motor Speed Control Max 40A 50V 1500W PWM HHO RC Controller 10-50V DC 30A
Hi-Q Motor Speed Control Max 40A 50V 1500W PWM HHO RC Controller 10-50V DC 30A $12.65
Time Remaining: 24d 10h 7m
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DC 12-30V 50A Frequency Adjustable PWM HHO Controller
DC 12-30V 50A Frequency Adjustable PWM HHO Controller $58.00
Time Remaining: 1d 3h 25m

Universal DC12V-50V 40A PWM HHO RC Motor Speed Controller Max 2000W Hottest
Universal DC12V-50V 40A PWM HHO RC Motor Speed Controller Max 2000W Hottest $12.73
Time Remaining: 24d 1h 54m
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12-30V 30A PWM Pulse Width Modulator HHO Controller
12-30V 30A PWM Pulse Width Modulator HHO Controller $24.80
Time Remaining: 3h 55m