New Digital PWM Controller for HHO Hydrogen Cell...

My analog current controller (not blogged) has been working okay thus far. As always, some of us are never satisfied unless they see some LEDs blinking somewhere to reconfirm that the unit is working. So I embarked on making a current controller that's digitally based so that I could display some functions as well as eliminating the need to open the casing to set the current, etc.

This new controller do that. It displays the line voltage, the current draw, the PWM frequency, the current limit and the cut off voltage. Setting the current and cut off voltage is done by a single switch brought to the front of the unit.

Once set, the unit will try to achieve/maintain the set current by varying the PWM frequency. It will also monitor the line voltage and if the voltage drop below the setpoint, it will switch off the PWM. Photo show the test unit displaying the line voltage... kewl... don't you think... :-)