is the all new Constant Current PWM
by Hydrogen Boost Now.Com
Great On Dry Cells Between 13-27 plates
Set It And Forget It
don't need a amp gauge with a constant current PWM
set the knob to the current that you want and that's
will stay within 1 amp of set point at 30 amps
PWM is easy to use and will..
cold starting times,
more monotomic hydrogen,
Improve the efficiency and the life span of your Dry
Is A Constant Current Pulse Width Modulator?
constant current PWM will automatically adjust the
pulse width from the PWM
that it will output a constant level of current regardless
of how large the load is.
other words, set this PWM to 30 amps and the current
will always be 30 amps (RMS).
changes in the charging system,
changes in your cell,
levels of KOH in your cell.
makes it much easier to set up your cell and the end
user is less likely to
add too much KOH and burn out fuses,
pop circuit breakers, or melt down the cell and wires.
PWM has many new features:
Constant Current... Current stays within .5 - 1 amp
of set point (average)
A remote port for a dash mounted water light and power
switch (Not available until 2012)
Very strong, easy to use bolt on connectors rated
at 60+ amps
Extra thick circuit board and large mosfet transistors
Internal fan to keep the PWM cool but also helps keeps
Frequency adjustable in the range that works best
for the Dry Cell (75Hz-1,500Hz)
12 Volt switched output for an EFIE or other computer
controlled device (For remote)
High peak power rating for large Dry Cells (This PWM
was tested with a 60 amp load)
PWM will power on and off without a relay (we recommend
to always use a relay for safety)
Two pages instructions to help with installing and
Professionally assembled with surface mount and through
hole parts, no hand soldering
Full 90 day warranty
It Time To Up Grade From Your Old PWM
To A New Constant Current PWM?
2 Ring Connectors
1 Spade Connectors
6" Shrink Tubing
2 Pages of Instructions
Constant Current PWM
Without Amp Gauge
For Custom Logo You Must buy 2
or 100 Amp Relay
Not Made In China Wire Kit
Relay And Wire
Must Be Purchased With Our PWM
90 Day Warranty
this PWM fails within 90 days, we will replace
it at no cost to you.
You will need to pay for shipping to us.
must use a fuse to protect the PWM.
We will not replace the PWM if you connect the
+ and -
wires backwards or connect the PWM to a load
greater than 60 amps.
PWM is built rock solid and is very easy to use
unit is Pre-tested and calibrated using a 60
amp Dry Cell
takes 2-4 days by priority mail
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
* 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
* Box Size 4.7"
x 3.25" x 2" not including mounting
* Weight = less than 1 pound
40 Amp PWM Without Amp Gauge
an Amp Gauge?
Try The 40 Amp Constant Current With Bright Blue Amp
The sensitive electronics
have been covered with potting compound
to prevent water damage and
to prevent copying.
This circuit board is copyrighted
© by AZ-Hybrid
Some of the other constant current PWM's on the market
based on a flawed design floating around on the internet.
flawed design was posted back in 1998.
old design does not use true pulse width modulation
as much as 50% of the energy that is passing through
the PWM .
true pulse width modification can pass large amounts
of current without overheating.
this flawed design can be made at home so there are
many out there.
old design easy to recognize.
It uses a very large Pentium heat sink and fan.
come in a metal box with a large fan.
large heat sink is needed because of all the power
wasted when in current limiting mode.
unit gets very hot and is only good for small loads.
did not use this old design.
PWM uses only true Pulse Width Modification and at
30 amps, is over 98% efficient.
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
fan is there for loads between 30 to 60 amps.
pics and text on this web page are the property of
Hydrogen Boost Now.Com or AZ-hybrid