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kcarring
Moderator


Canada
1057 Posts

Posted - March 20 2012 :  13:03:29  Show Profile Send kcarring a Private Message  Reply with Quote
Post your PWM circuits here :)

This is a simple PWM I have used, and built a few. This was my first PWM for HHO. Worked well, but does not deliver high amps. If does go to high frequency though.



The Mosfet is IRL 3084 / IRL 7833
Frequency range is 1200 Hz to 120,000 Hz
Duty cycle is also adjustable
make sure you have at least 470 uF on the power rail (C7 & C8)
turn everything counter clockwise on startup
up to bout 20A is available
M+ and M- connect to HHO cell, or motor, lamp
Connect 12-15V input to V+ and V-


~~~~~~~~~~~~~
You wouldn't laugh at my igloo if you knew how cold my beer is!

Edited by - kcarring on March 20 2012 13:53:52

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kcarring
Moderator



Canada
1057 Posts

Posted - March 24 2012 :  21:12:38  Show Profile Send kcarring a Private Message  Reply with Quote
Here is a higher output brute force electrolysis PWM put together by ZeroFossilFuel. I'm not sure, exactly how many amps this design can handle, but that could upgraded, too, I'm sure. It is more robust than the previous circuit, and has true current limiting, which is exactly what you need, rolling down the road when hell breaks loose, which it will, guaranteed. Always does, if you have any size to your unit, that is.

You must be logged in to see this link.

~~~~~~~~~~~~~
You wouldn't laugh at my igloo if you knew how cold my beer is!
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msmjr
Average Member



USA
444 Posts

Posted - March 24 2012 :  21:38:49  Show Profile Send msmjr a Private Message  Reply with Quote
Hey Kcarring
I had just saved that 1 yesterday. I thought I read 30amps on the link that got me there but with a 4ga connect wires it must be a lot more.

Growing old is mandatory, Growing up......optional.
He is wise who gains wisdom from another's mishaps.
—Plutius Syrus
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49er
Administrator



USA
4426 Posts

Posted - March 24 2012 :  22:47:28  Show Profile Send 49er a Private Message  Reply with Quote
Hi ALL

Last video Z said he makes 1 and 2 mosfets 75 amp each

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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SKYPE bxx49er
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TinMan
Advanced Member



4082 Posts

Posted - May 07 2012 :  08:31:12  Show Profile Send TinMan a Private Message  Reply with Quote
This is actualy Dave Lawton's replication HHO pulse generator ,but could be used for anything



swim at 90 degrees to the current and gain speed in two directions

skype-thetinman.69
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