* NEW 40 AMP CONSTANT CURRENT PWM'S ARE HERE! *
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Digital EFIE

 

4 Channel

Digital EFIE



Can't get these on Ebay

*New Item*

In stock Now

No Amp Gauge


40 Amp
Constant Current






Without Amp Gauge

Only $79.95


100 Amp Relay!




Only $19.95

50

Amp PWM
with amp gauge
2 cooling fans
frequency adjustable

No Constant
Current

Only

$179.99

Free Shipping

 

35 amp

PWM

with fan

New low price

 

Only

$39.95


Is This You?


40 AMP
Constant Current
PWM
Preset

Can Be Preset
For any Current Levels From 10-40 Amps

Only 79.95

Can Also Be Adjusted By The End User

 


Basic 50 Amp PWM
With Frequency Adjust


New low Price

Only $89.95

 


Mini Amp Gauge


With 100 Amp Shunt

New Lower Price

Only $29.95

Green Only

 


30 Amp PWM

For Small Cells

USA Oil Policy

 
40 Amp Constant Current PWM With Onboard Current Adjust

 

* NEW*

40 Amp

Constant Current PWM

With Pre-set or Onboard Current Adjust

 

 



This is the all new Constant Current PWM

Made by Hydrogen Boost Now.Com

Works Great On Dry Cells Between 13-27 plates

 

Just Set It And Forget It

 

 

This PWM can be pre-set by us for any current level

Between 15-40 amps or you can set it youself with your amp gauge.

 

You don't need a amp gauge with a constant current PWM

Just set the current with your amp gauge and that's it.

Current will stay within 1 amp of set point at 30 amps

 

This PWM is easy to use and will..

Prevent thermal runaway,

Improve cold starting times,

Produce more monotomic hydrogen,

Improve 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

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 has many new features:

 

..........* Constant Current... Current stays within .5 - 1 amp of set point (average) ..........
..........* 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 water out

..........* Frequency adjustable in the range that works best for the Dry Cell (75Hz-1,500Hz)

..........* 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 cell setup

......... * Professionally assembled with surface mount and through hole parts.
......... * Full 1 year warranty

.........

 

Is It Time To Up Grade From Your Old PWM
To A New Constant Current PWM?

 

Only $79.95

 

All PWM's include

2 Ring Connectors
1 Spade Connectors

1 Easy to Understand Instructions

Either a Green or Blue Amp Gauge Can Be Added To This PWM

 

 



40 Amp
Constant Current PWM
With Onboard Current Adjuster

 

Model

 

Logo

 

Ring Connector

 

Preset Current

 

....................................................................

 

 

For currents not listed please leave a note in Pay Pal

 

...........................................................................................................

 

Save On 10 or More PWM's

Only $74.95

 

 

With 8 AWG ring conectors

Free Shipping

 

 

 

1 Year Warranty

If this PWM fails within 1 Year , 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 or connect the PWM to a load greater than 60 amps.

 

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 3-4 days by priority mail

 

Specifications:
* Supply Voltage: 12-15 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
* Box Size 4.7" x 3.25" x 2" not including mounting flange
* Weight = less than 1 pound

 

Need lots of 10 or more?

We have them is stock



 

 

 

 

 

This circuit board is copyrighted © by AZ-Hybrid

 

Also Available:

40 Amp Constant
Current Without
Amp Gauge
40 Amp Constant
Current With
Onboard Current
Adjustment
40 Amp Constant
Current With
Onboard Current
Adjustment And
Amp Gauge

 

Buyer Beware

 

Some of the other constant current PWM's on the market
are based on a flawed design floating around on the internet.
This flawed design was posted back in 1998.

 

This old design does not use true pulse width modulation and can waste

as much as 50% of the energy that is passing through the PWM .

Only true pulse width modification can pass large amounts of current without overheating.

Unfortunately, this flawed design can be made at home so there are many out there.

 

 

 

 

 

 

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all rights reserved

All pics and text on this web page are the property of Hydrogen Boost Now.Com or AZ-hybrid

 

 

 

 

 

 

 

 

 

Copyright 2007 Hydrogen Boost Now.com