RESONANCE EFFECTS FOR EVERYONE TO SHARE

[Chris31]

@Groundloop and Luc
There should really be a 22ohm between pin 6 of the driver and the bootstrap capacitor. Then a diode such as 1N4936 on pin 6 (cathode) to ground (anode). A 1N4936 can also be used for the bootstrap diode. Its supposed to be mentioned on the application note of IR somewhere, I cant find it though. I experienced 2 blown drivers on my CDI circuit before I realised those 2 vital parts must be added. It is now running very stable at 340V supply.

Sticking TVS across the MOSFETs wouldnt hurt either, infact a protection is a must on anything MOSFET + BIG COIL circuit.

Excellent work everyone 

[gotoluc]

Luc,

Look at the coil drawing again. Can you take measurement of your coil for me?
I also need to know the turns for the primary and secondary. Just update the
drawing and re-post it here.

[EDIT]  I think the new transistor switch will be more robust. Mosfets are prone to failure when used with coils.
           Regular transistors will take much more "abuse" before they break.

Groundloop.

Okay here are the added info but we need to keep in mind that dimensions will change if we use plastic coated wire and so on! so keeping the .55mH is what is needed and the 250pf cap in series.

My 5mm estimate air space on the secondary pickup coil was from the center of the wire to the surface of the primary enamel wire.

I would also say (at this time) that I think that multiple coil arrangement positions could be very important to self amplify the effect as I found just before I blew the circuit. I have many new ideas to test but got to rebuild the circuit first. So maybe you want to hold off on building coils until I rebuild and test these new ideas?

Groundloop, I just saw Chris31's post, should I be adding these suggestions?

Luc

[Groundloop]

Luc,

Thank you for making the changes to my drawing.
Yes, I will hold the making of the coils until you have tested more.

@Chris31,

If you have tested this and find that it will protect the mos drivers, then why not.

Can you make a simple drawing and post it here?

Although Transient Voltage Suppressor (TVS) will do a wonderful job of protecting mosfets, they also kill any over unity
in the circuit, I think? Better blow some transistors and get over unity results than have a stable circuit that runs forever
without any o/u. Please share your thoughts about this.

Groundlop.

[wattsup]

@groundloop

OK, I downloaded the eagle program but my brain is so filled up with so many things that I don't know if I will be able to abosrb a new learning curve. lol

I also downloaded your rar file and also sent it to my brother who will get a quote for me on having them pre-made already populated, etc. But in the rar there are two schematic files. I'm lost ot know which is which.

Also, I have discussed with @najman100 who lives about 15 minutes from me. I asked him for two circuits but will know more if I will need them or not once my brother gets back to me. I will also ask my brother to put the mosfets and other major components on plug-in because I have a nasty habit pf blowing mosfets.

But here is my question. Are we moving too fast? I know I know. What a question. What I am thinking is should we make the circuit and then see that changes are required to make it better, then the question is can we make it better now. Here is what I am thinking about blown mosfets.

When you do a reverse polarity switching on coils with good enough inductance, you WILL generate a very good flyback that I have learned through hard knocks that mosfets really do not like this flyback. We also know that the flyback will return to the source via the positive terminal.

Durig the reversing of the pulse, there will be a miniscule moment where both the positive and the negative will be disconnected. So the question is, is it possible to make the positive terminal that is going to be disconnected, first get connected to a capacitor tank via a diode, then connected to the negative output.

If the circuit can do this during the reverse pulsing, I am sure Tesla will stand up and start applauding. lol

Last thing, I do not want to detract form this thread but just wanted to say I have put up my coil for my @handyguy1 motionless generator here;
http://www.overunity.com/index.php?topic=3865.msg145113#msg145113

[Groundloop]

@Wattsup,

First the difference between the two circuits:

capsw.sch (schmatic drawing) capsw.brd (board layout)
This is the micro controller (PIC16F84A) version of the new switch.
I'm making enough boards of this circuit, no need for you to make any.
You will get a free board from me on the above version.

wopicosc.sch (schmatic drawing) wopicosc.brd (board layout)   (With Out Pic Oscillator = wopicosc)
This is the discrete component and logic ICs version of the new switch.
I'm making NO boards for this version. Please team up with @najman100 for making boards of THIS version only.

The new board does not use mosfets at all. The new boards uses transistors. The transistors has internal protection diodes.
Look at the data sheets for the transistor I use. Flyback is a good thing in a over unity device.

In the micro controller version it is possible to do everything you want. It is only a change of software to the PIC mcu.

Groundloop.