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Author Topic: PWM plans/schematics?  (Read 32588 times)

Kusanagi

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PWM plans/schematics?
« on: March 05, 2008, 03:44:04 AM »
Hey all!

Been doing some research and yet Google and the interwebs have failed me.

I cannot seem to find a readily available Pulse Width Modulator for my HHO project. I wish to construct one, but the only plans I have run across are here: http://www.cpemma.co.uk/pwm.html

A few questions:

1) Is this a good base to construct and do testing with? My problem lies in the fact that this doesn't seem to be able to handle high current, the MOSFET transistor is only rated at 14 amps. Would running two in series/parallel or using a different MOSFET with a higher amperage rating work better for this project?

2) The maker of the Power Tube on Youtube/Ebay has a small amp meter in his design - but I can't see where it's hooked up. Would it go directly into the power out lines to to HHO generator?

3) I also notice his design has a solid state relay. Now, the obvious reason for it is to make sure the HHO doesn't run when the car is off, but assuming that the circuit in question won't take a 10+ amp load, would running the pulse to a solid state relay also cause the pulse in whatever the relay was hooked up to, such as the generator?

Thanks for answering my questions! I have a tiny little 1.6L 1988 Pontiac Lemans and can't wait to build this.

I even have a blueprint for the PCB board, assuming that the above circuit works at that current.

Barring any of this, can anyone please point me to some schematics that show how to build a PWM that would work in the car and be able to handle the AMP load?

Kusanagi

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Re: PWM plans/schematics?
« Reply #1 on: March 05, 2008, 10:24:19 PM »

Nothing? :-(

ramset

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Re: PWM plans/schematics?
« Reply #2 on: March 05, 2008, 11:04:45 PM »
KUS. the hydrogen garage  should be of help Chet

readyakira

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Re: PWM plans/schematics?
« Reply #3 on: March 05, 2008, 11:09:07 PM »
Here is the link I am trying for a bunch of my HHO project electronics.  Chemelec is on vacation right now so you won't be able to contact him for a week or two more, but he can also supply the PCB for a small charge.  I have tried a few of his circuits and so far so good.  I am waiting for him to get back from vacation so he can make me his version of the D17 EFIE.  Anyways keep us up to date on your project.  What kind of cell you building?  I am going with a 7cell series setup and going to probably run 2 in parrallel in order to make heat as small of an issue as possible. 

http://www3.telus.net/chemelec/

Kusanagi

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Re: PWM plans/schematics?
« Reply #4 on: March 06, 2008, 12:02:57 AM »
Thanks guys!

I have a few designs I want to experiment with, but from reading I think the best thing off the bat is to make sure I have a working PWM to get the maximum out of each setup.

I started from the Hydrostar plans and read about how innefective they are, and I'm thinking of several different ideas to see how much HHO I can produce.

The one that really inspired me was the Powertube but it only puts out about 1/3rd l/m at peak efficiency. There was also plans online for another one from an australian company that claimed to make 1L/min on less than 200 watts but the schematics went offline.

I want to try some coil, plate, and there's also a few other ideas I have. I have a tiny 1.6 liter engine, so anything should be a big help to it.

Kusanagi

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Re: PWM plans/schematics?
« Reply #5 on: March 06, 2008, 01:04:29 AM »
Ramset: That site only has a link to a diagram which is down, it's from Kevin's Water as Fuel.

I just ordered the PWM from there though, hopefully I can build it and see some good results.

ramset

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Re: PWM plans/schematics?
« Reply #6 on: March 06, 2008, 01:37:51 AM »
KUS try the file section here http://tech.groups.yahoo.com/group/Hydroxy/ Chet

Kusanagi

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Re: PWM plans/schematics?
« Reply #7 on: March 29, 2008, 08:41:49 AM »
I have to say I'm not very happy with Hydrogen Garage.

It took 3 weeks to get my PWM kit from them and it came with no schematic. Nothing, and emailing them multiple times has done nothing.

So now I have all this and not even a label sheet to at least attempt to figure out how to put it together.

Anyone get one of their kits before and have a schematic?

dagronmaster

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Re: PWM plans/schematics?
« Reply #8 on: March 30, 2008, 08:43:31 PM »
Hi I'm using stanly mayers pwm curcuit plans. Haven't build it yet but do have everything ready finally.  On plans d17 of  http://www.panaceauniversity.org/.  Look around here you might find what you are looking for

dagronmaster

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Re: PWM plans/schematics?
« Reply #9 on: March 30, 2008, 08:51:17 PM »
sorry, got that wrong. its D14 pdf that you need. the other is the effi for the o2 sensor. still useful.

dagronmaster

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Re: PWM plans/schematics?
« Reply #10 on: March 30, 2008, 08:53:15 PM »
just type d14 in on the search on the above site it will take you to it.

Paul-R

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Re: PWM plans/schematics?
« Reply #11 on: March 31, 2008, 04:07:23 PM »
Hey all!

Been doing some research and yet Google and the interwebs have failed me.

I cannot seem to find a readily available Pulse Width Modulator for my HHO project. I wish to construct one...
You are best off joining this group:
http://tech.groups.yahoo.com/group/workingwatercar/
The schematic for the PWM-F board are available, but that for the PWM-G
is not. You would need to buy the pcb. But you will get a great deal
of help and support to build the 101 plate unit which gives 100lpm
from 20amp at 12 volt !

In the meanwhile, try this:
http://www.free-energy-info.co.uk/D9.pdf
Paul.

Kusanagi

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Re: PWM plans/schematics?
« Reply #12 on: March 31, 2008, 10:22:31 PM »
100 liters per minute on 240 watts?

I hope someone sure has video of that somewhere or has built and tested one for proof of concept...

Paul-R

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Re: PWM plans/schematics?
« Reply #13 on: April 01, 2008, 04:03:35 PM »
100 liters per minute on 240 watts?
Yes.
20 amp comes out of the supply, and 32amp from the board to the unit!
Visit the group. The PWM board also has a toroid with complex windings on it.
Need I say more? It is a serious item to build, with 100 cells, each one
insulated from its neighbours, with 6" x 6" SS plates, 316L, each flat and
parallel to the others to a tolerance of one thou. It is about resonance in
an impedance matched system, with 42.8khz going in with another feed
and octave down, and a third an octave lower still.
Paul.

HHO King

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Re: PWM plans/schematics?
« Reply #14 on: September 04, 2008, 03:15:20 PM »
Ok now what about a regulator or PWM to stop the excessive drain.


This is the pwm i use in my hho setup. I bought it here http://www.extremehho.com . I have noticed the excessive heat at the terminals is now gone and it can finally control it. The built in amp gauge is what sold me on this one.
My next step is to hook up a temp gauge for my cell and i also plan on buying a Scangauge II.