#1 H2O2 PWM V2.0.0

[webiron]

What video editing software do you use as it's pretty neat?

[H2O2FromH20]

@webiron

For Video #1 through #39 I used Windows Movie Maker it came with my Windoes Vista. I now use Adobe Perimire Pro 3 the Video #40 and #41 are edited with Adobe and are the same camera as all my previous episodes.

All my new stuff will be recorded in HD at 30Fps 1080P

[getinmybigfatbelly]

I've built three of H2O2's V2.0.0 PWMs and am preparing to build three more. His video and instructions are very detailed and easy to follow. This was important to me because I had zero experience working with SMT. After viewing H2O2's videos I was confident that I could accomplish this project. You do not need a soldering station. I used a Radio Shack 15/30 watt soldering iron (640-2055) with a fine tip (64-2052) and .015 solder (64-035). You will need a magnifying tool. This PWM is awesome.

[defiled33]

I have built the Zero PWM and have had a problem with over heating. This is after weeks of use, the 12000 cap would loose its cool and self destruct. I am only trying to control a 30 amp cell (checked with raw voltage) to around 15-20 amps.

I would like to try building your improved PWM, but I cannot find the print, and parts list. Could you please supply these for me so I may try out your unit. I am very impressed with your detailed vids. Thanks!

[ZeroFossilFuel]

Kudos to you too sir! The gate driver is definitely an improvement. Did your faster switching times reduce device heating? Which gate driver did you settle on?

Poking fun a little bit, you do realize that H2O2 stands for hydrogen peroxide, right? ;-)

[H2O2FromH20]

Thanks Zero, The driver is TC1411NEOA, Have some unloaded OScope shots at ://h2o2fromh2o.oregonsouth.c*o­*m/Vid-IMGs13.h*t*m (Remove the *) if you care to take a look, I have only tested my 4 MosFet PWM at 15Amps, and the load is Head light of a car, not a real load test. My cell a Fire in the water drycell is in the conditioning stage. Can only get 5 amps with Vinegar, 5 neutrals and 19 plates. I would like to see it higher! KOH Soon!

[H2O2FromH20]

Yes, hydrogen peroxide Its all YouTubes fault, When the account was made they limit Characters, dont allow symbols and spaces? Whats a chemist to do LOL. Been signing my messages H2 O2 probably should be 2(H2)O2 and no subscript on YouTube : - (

[BillMan2002]

Would this item also over heat? or why or why wouldn't it work? thanks Will

[H2O2FromH20]

BillMan2002

As long as your completed PWM worked for you for more then 15-30 minutes when it was installed! Then it my have over heated, because of To Much Electrolyte(Ie not knowing the starting point of your Peak Current.)Or every thing was set up correctly and the heat sink did not remove enough heat and it over heated the MosFet.The heat will destroy the MosFet. If you built the PWM Unit yourself then that is a different set of questions.If you need more info please message me directly.

[BillMan2002]

Hey, you made a comment about not needing a fan? so...

Does this mean it will limit the current and it will not get hot to the touch and you can overload your cell with tons of electrolyte?

Thanks, Will

[H2O2FromH20]

BillMan2002

Preliminary findings suggests that the Rise time of the PWM gate pulse is 36 times faster then the original design by Zero Fossil fuel.

Applying this extremely fast gate control to the MosFet, will reduce the heat generated while turning on, this and using two MosFets in parallel should reduce the temp significantly, I have no problem adding even two more MosFets all in parallel if its is needed.

[BillMan2002]

I see, that is seriously all it is? I was told that it is due to using to much electrolye. Figures, but i dunno.

Also, I was told it is only one part that heats up? just one chip, otherwise everything else stays cool.

[H2O2FromH20]

Max Current is still around 30 Amps with no fan, But with a fan, 30 times the Number of MosFets is your operating current, and thats not even the max current, but is the suggested.

[H2O2FromH20]

BillMan2002

As far as current goes, you should know how much your electrical system can deliver continually. Set your PWM for 100% Duty ( ie always on like using strait DC) and Adjust your electrolyte until the desired current is reached. Then adjust the current limiter until the current just starts to drop, then turn the current limiter back just a little. It should now be set up and will not go over this current. At this point Max current average current and peak current are the same.

[H2O2FromH20]

BillMan2002

Note: if you add more Electrolyte the Average current will be maintained but the peek current will rise and it is hard to observe Peak Current and you could go over the maximum rating of the MosFet. Heat also causes the peak current to rise, and we want to control the current as heat rises in the cell.

As far as Components that get hot, The MosFet ( ie Q1 ) is the one that generates the heat.

[najman100]

make the track more wide so when you replicat that you wont have any problems with etching,why are you using SMT it is harder to assmble fro a regular guy ,and what type of modes you made with the ZFF PWM

Are you planing of sharing this with others ,

Nice job keep them comming .

najman

[H2O2FromH20]

najman100, Why SMT (Surface Mount) well My day job is in electronic manufaturing. I Get to work with the newest Tecnologys on the market and these newst Chips dont come in the older formats. Also I can fit more in the same space. And no drilling and wondering if you will hit the pad on the other side! I have several Ideas, One a sensor board. Temp, Current output reading, IFFE override, thermal shutdown.

[H2O2FromH20]

Two a way to increase current when the Car need HHO the most. Everything I come up with For HHO will be released to the public domain. What are you using to etch your boards? Your Voltage controll looks like it has great potential.

[najman100]

the normal etching acid .

as my voltage control the first one when to the garbage could not handle the current ,than ther is a second upgrade that can handle 20 amps plus i will test it this week end to see if it works ,for maximum mmw you have to have steady volts.

[deltahho]

Nice work looks like you have put in some hard hours to put this together, what current do you think you will be able to run this circuit at as I'm looking for a pwm that can put out a high amount. My cell can handle up to straight dc 50amps I dunno what rating that would be in PWM lol I hope that made some sort of sense haha

[H2O2FromH20]

Deltahho, The MosFet Driver can handle several MosFets It has two ouput channels. And it is possible to place MosFets in parallel. ZFF is runing one MosFet at 30Amps but has to cool it with a fan. I want to aviod the moving parts that could fail. So 2 in parallel would run Cooler at the same 30Amps, Add a second Parellel set of MosFets on the second channel for an Aditional 30Amps. Max 60A no fan, More with A fan.

[H2O2FromH20]

I would love any feedback that anyone has, You Tube is a first for me