Quote from: Grumage on November 15, 2013, 12:06:12 PM
I will have a look at your remaining suggestions over the weekend!!

...and what happened?

Quote from: NickZ on November 23, 2013, 06:45:13 PM
   GeoFusion and All:
   The idea that you have a motor/generator that is self-running,  and is powering most everything in your house, is something that we'd all like to see some picture/videos, of, etz...

  I'm still waiting for your latest oscillator/yoke, or flyback set up. To start to replicate, it, also.  If you're too busy just state which is the best diagram to follow.
As you seem to have only circuit, that could light a 1000 watt bulb, (even if only at 20 percent), using a simple circuit and small 12v battery source.
Or, was it having NO shoes on, that made it work so well?
   Although several of us have tried to replicate it, so far none have achieved the same, or better results.
  Maybe the most important component is obtaining the right transistor (mosfet). As well as a clear well labelled oscillator circuit.
  Mazzill's circuit does not seam to work so well for most that have used it up to now, or even the various Royer circuits.
   So, what we need to focus on...   is something that WORKS,   Right?   And, hopefully is still working...  So that we can all work on the same circuit, instead of everyone doing their own thing, and needlessly wasting time, and burning out a pile of Fets, etz...


  NickZ

Nick,

Please post a schematic and photo of your latest Mazzilli circuit giving component values and types, so that we can hopefully work out why you are smoking mosfets. As I've commented before, I see nothing special about the performance of the setups in Geo's videos. Once the circuit is constructed correctly, then its all down to wire gauge, coil turns ratio and core material to get optimum results lighting a given lamp load.

Quote from: magpwr on November 03, 2013, 08:47:21 AM
hi itsu,

I have used IRFP260N mosfet for my HHO experiments.Base on datasheet this mosfet work ideally close to 200volts.Now we are unable to measure back emf easily while it's operating.
There is a high chance you may hit the mosfet breakdown voltage and cause over heating,reduce efficiency especially if you are using 24volt input.
Another possibility the number of turns in your winding you have done was ideal for 12volts but not for 24volts.May need to increase winding a little more.

May i suggest you try using higher voltage rated mosfet with low RDS on.
I used "SPW47N60C3" 600volts mosfet with low rds at this voltage which i had purchased cheaply/free shipment of ebay(comes in batch of 5).It did help to increase the HHO production a little more.
Do check datasheet spec.

Proven in my youtube video "sanjev21" Title Important modification for Dave Lawton Phase Lock Loop circuit

Hi Magpwr / All,

i finally received my 47N60C3 MOSFETs (5), and put them into my Mazzilli osc., but they popped instantly using only a 12V battery (7Ahr) 
I tried this severall times untill most where gone, so they don't work in this circuit 1 to 1

Putting back my IRFP260N's it worked again as normal.

Looking at the main spec's of the both MOSFETs, not much difference is seen else then the higher Drain/Source voltage of the SPW47N60C3:

Vds 650V
Rds(on) 0.07 Ohm
Id 47A

compared to the IRFP260N:

Vds 200V
Rds(on) 0.04 Ohm
Id 50A

So it must be in some other parameter which make them unsuitable for this circuit as it seems they won't oscillate and put the gate wide open (need a higher then 470 Ohm gate resistor?)
On all damaged MOSFETs, the drain/source junction was shorted permanently.

Anyway, this shows that not all MOSFETs can be used in this circuit, be aware.

Regards Itsu

http://www.energysea.net/forum.php?mod=viewthread&tid=1350&extra=&page=1


Chinese Don Smith replication.

Quote from: itsu on November 24, 2013, 06:51:05 AM
Hi Magpwr / All,

i finally received my 47N60C3 MOSFETs (5), and put them into my Mazzilli osc., but they popped instantly using only a 12V battery (7Ahr) 
I tried this severall times untill most where gone, so they don't work in this circuit 1 to 1

Putting back my IRFP260N's it worked again as normal.

Looking at the main spec's of the both MOSFETs, not much difference is seen else then the higher Drain/Source voltage of the SPW47N60C3:

Vds 650V
Rds(on) 0.07 Ohm
Id 47A

compared to the IRFP260N:

Vds 200V
Rds(on) 0.04 Ohm
Id 50A

So it must be in some other parameter which make them unsuitable for this circuit as it seems they won't oscillate and put the gate wide open (need a higher then 470 Ohm gate resistor?)
On all damaged MOSFETs, the drain/source junction was shorted permanently.

Anyway, this shows that not all MOSFETs can be used in this circuit, be aware.

Regards Itsu

Itsu,

The pulsed drain and avalanche current ratings are superior with the IRFP260N. The pulsed drain current is the important parameter. A VDS of 200V should be ample for your application.