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Thread: Feedback on eBay PWM

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  1. #1

    Default Feedback on eBay PWM

    any thoughts on this? does it look decent?

    http://cgi.ebay.com/ebaymotors/PWM-P...Q5fAccessories

  2. #2
    drumacc Guest

    Default Have one

    I bought one of these and I not sure of how well it works. It worked, yes, but I find its output suspect.

    It is the first that I've bought, so I don't really have anything to compare it to. I'd be interested in what feedback you get on this.

  3. #3
    drumacc Guest

    Question interesting

    Found this site with the same unit as a DC motor control. I don't think that unit is really designed with hho optimization in mind...?

    http://www.bakatronics.com/shop/item.aspx?itemid=581

  4. #4

    Default

    Quote Originally Posted by drumacc View Post
    Found this site with the same unit as a DC motor control. I don't think that unit is really designed with hho optimization in mind...?

    http://www.bakatronics.com/shop/item.aspx?itemid=581
    I have been using their products for ever. They work great for me.

    Larry
    2008 Nissan Frontier 4X4 Nismo. 12 MPG baseline with my normal commute and heavy stop and go daily driving. Generator installed and working on 3/29/2009

    Up to 14.5 MPG with no enhancers. Still testing the effects of lots of HHO and no electronic enhancers.

  5. Default Mechtogo

    Quote Originally Posted by H2OPWR View Post
    I have been using their products for ever. They work great for me.

    Larry
    I have a problem with cell and Pwm shorted out suspect bad PWM.

  6. #6

    Default

    Quote Originally Posted by drumacc View Post
    Found this site with the same unit as a DC motor control. I don't think that unit is really designed with hho optimization in mind...?

    http://www.bakatronics.com/shop/item.aspx?itemid=581
    Many so called sellers on eBay and elsewhere who sell PWMs do not have even a little idea on what they sell and how the PWM modules do work. What they do is simply resell somebody's product.

    For example http://www.canakit.com/ has their own 50A PWM that is very affordable in price and well designed. I bought one and tried it. BWT, other guys sell it as their own product on eBay!

    Keep in mind that most stock PWM units are Motor Control devices (http://www.canakit.com/electronic-ki...or-controllers) and the mosfets work OK in any duty cycle driving motors, but not close to 0 Ohms HHO Cells that put huge load on the power rail...

    Here is the direct link to manufacturer page - http://www.canakit.com/50a-dc-pwm-mo...ontroller.html
    VOLVO VNL 670 '04, 12L D12D engine, ODO beyond 1.1M miles. Stock 6.0 MPG. Managing up to 7.3 MPG w/o HHO Cell, w/ straight flow muffler, EGRs OFF, AirTabs, ...
    SMART HHO Dry Cell in progress: 10"x12" #20 316L 66 plates unipolar 6 stack, 200 AMP PWM, Fully monitored & controlled by .NETMF Platform. 7.33LPM @ 102A

    My Youtube vIdiotics.
    FUEL ECONOMY CONVERSION TABLE & FUEL EFFICIENCY FACTORS Cheat Sheet for Truck Drivers
    CHEMICAL RESISTANCE GUIDE FOR PLASTIC AND METAL VALVES AND FITTINGS

  7. #7

    Default

    Thanks for the link. That looks like it would not be too tough of a kit to tackle. And the board layout would make for easy component replacement. Although I would not use spade connectors for hook up.

  8. #8

    Default

    Quote Originally Posted by Brent View Post
    Thanks for the link. That looks like it would not be too tough of a kit to tackle. And the board layout would make for easy component replacement. Although I would not use spade connectors for hook up.
    In about a month or so my SMART HHO CELL electronics will be ready. It includes heavy duty dual PWM for 200+ AMP with digital current and temperature control. )))))))))
    VOLVO VNL 670 '04, 12L D12D engine, ODO beyond 1.1M miles. Stock 6.0 MPG. Managing up to 7.3 MPG w/o HHO Cell, w/ straight flow muffler, EGRs OFF, AirTabs, ...
    SMART HHO Dry Cell in progress: 10"x12" #20 316L 66 plates unipolar 6 stack, 200 AMP PWM, Fully monitored & controlled by .NETMF Platform. 7.33LPM @ 102A

    My Youtube vIdiotics.
    FUEL ECONOMY CONVERSION TABLE & FUEL EFFICIENCY FACTORS Cheat Sheet for Truck Drivers
    CHEMICAL RESISTANCE GUIDE FOR PLASTIC AND METAL VALVES AND FITTINGS

  9. #9
    Erik the Red Guest

    Default PWM with Ajustable Frequency Control

    Hi Guyz
    I have a 30amp PWM with Ajustable Frequency Control that I have not yet attatched to my Cell. Will the feature on this PWM help more in controling Voltage, Amperage Ect Ect Ect & help in fine Tuning my Cell's output?
    Hope to hear from sombody soon as I want to hook the divice up to my Cell soon. Many Thnx. E"!"

  10. #10

    Default

    Quote Originally Posted by Erik the Red View Post
    Hi Guyz
    I have a 30amp PWM with Ajustable Frequency Control that I have not yet attatched to my Cell. Will the feature on this PWM help more in controling Voltage, Amperage Ect Ect Ect & help in fine Tuning my Cell's output?
    Hope to hear from sombody soon as I want to hook the divice up to my Cell soon. Many Thnx. E"!"
    Erik,

    The PWM will allow you to dial in the amount of amps your cell is pulling. It works by rapidly switching the ground of the cell off and on. One benefit is that you can put maximum strength electrolyte in your cell and just dial in how many amps you want. KOH at 28% by weight will give excellent freeze protection as well as make your device more efficient by reduced resistance.

    Russ.
    2006 Dodge Ram 4.7L - 16.5 mpg stock
    My thread Painless Experiment in HHO

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