Just Set It And Forget It

After almost a year of testing, the all new 40 amp Constant Current PWM is ready for sale.

We at Green Fuel H2o wanted a new PWM that would meet the needs of today's power hungry

dry cells and have the features that are not available from most others PWM's.

This PWM was made to meet those needs.

This PWM is easy to use,

Prevents thermal runaway,

Improves cold starting times,

Produces more monotomic hydrogen,

Improves the efficiency and the life span of your Dry Cell.

What Is A Constant Current Pulse Width Modulator?

A constant current PWM will automatically adjust the pulse width from the PWM

so that it will output a constant level of current regardless of how large the load is.

In other words, set this PWM to 30 amps and the current will always be 30 amps (RMS).

This compensates for:

Voltage changes in the charging system,

Temperature changes in your cell,

Different levels of KOH in your cell.

This makes it much easier to set up your cell and the end user is less likely to

to add too much KOH and burn out fuses,

pop circuit breakers, or melt down the cell and wires.

This PWM is built rock solid and is very easy to use

Every unit is Pre-tested and calibrated using a 60 amp Dry Cell

Shipping takes 2-3 days by priority mail

Specifications:

* Supply Voltage: 10-15 VDC
* Output Current: 10 - 40 amps continuous RMS
* Peak continuous load is 60 amps (tested)
* Duty cycle or pulse width: Automatically adjusting from 10% to 100%
* Frequency: On board adjustable from approximately 75Hz - 1,500 Hz
* Efficiency with a 30 amp load better than 98%
* Cooling fan is rated for 12-15 VDC
* Output Mosfets are rated for more than 100 amps each
* 7/16 bolt on connectors rated for 60 amps
* Circuit board traces rated at 65 amps peak or 45 amps continuous
* Digital amp Gauge is rated for 10-15 VDC Accuracy 1 amp
* Box Size 4.7" x 3.25" x 2" not including mounting flange

Our PWM makes very little heat. This is why we can use a plastic box.

At loads less than 30 amps, this PWM needs no fan at all.

The fan is there for loads between 30 to 60 amps.