Hi Darrell,
I will send you a free 40 amp Constant Current PWM with digital amp gauge
If you will post your results here on the HHO forums
You will need to run your cell at less than 40 amps RMS
Peak load (cell ) can be 50-60 amps
If sombody else thinks they need a PWM more tha Darrell feel free to beg.
............. Dan HBN ...............