This is not a Constant Current PWM
If you want Constant Current please buy The 40 amp
This Pulse Width Modulator is best for bench testing
or large HHO Cells
This is the Max 50-55 Amp 12-24 volt PWM
This PWM has frequency adjustment from 300-3,000Hz
The Max 55 amp heavy duty PWM will run 3 HHO cells
at 15-18 amps each or 1 large cell at up to 55 amps.
PWM is built rock solid with 6 output transistors
and extra heavy duty wire reinforced circuit board
Just what large dry cells need.
new box comes with a gradient label, so setting up
your cell has never been easier.
Simply remove the top and connect the power wire and
load and set the dials to the green range.
*You will need to add a 50-100 amp relay*
day sale $99.95
* Free Shipping Inside the USA*
Wire diagram included
50 amp PWM with box, fans + free shipping
In the USA
of (2) 50 amp PWM's with box, fans +
in the USA
50 amp PWM
with box, fans +
World Wide shipping
this HD- PWM fails within 30 days, we will replace
it at no cost to you.
You will need to pay for shipping to us.
You must use a fuse to protect the PWM.
We will not replace the PWM if you connect the + and
- wires backwards
and burn out the reversing diodes.
Supply Voltage: 12-24 VDC
* Fans are wired for 12-24 VDC
* Output Current: 0 - 55 amps continuous RMS
* Output Current: Rated at 90+ amps peak!
* Duty ratio: Can be set from 0% to 100%
* Frequency Adjustable from approximately 300 - 3,000
* Frequency can be fixed at 100Hz (dip switch)
* Two - 60 mm ball bearing cooling fans
* Extra heavy duty wire reinforced circuit board traces
* Box Size= 6 x 4.5 x 2.5 not including mounting flange
* Weight = almost 1.5 pounds
This is the circuit board
for our 50 amp PWM
PWM Pulse Width
Modulators Hydrogen Boosting