Exception could be made for the brief reverse conduction during the DSR effect (as in your nanopulser) as well as the Zener effect and Avalanche reverse breakdown of some diodes in some cases.
Yes and in there lies the Out of the Box jewel as far as I am concerned. Said this pages ago.
@Grumage (@All)
While you guys work out more of that circuit, I took some time and measured some diameter ratios of the E-cores since they are farthest away from the actual bobbin and windings in the Akula photo. With these ratios, I extrapolated their relative diameters to overlay the bobbin coil that are closer in the photo. As you can see, on the second image, the center core of the Ecore takes up a good amount of diameter under the winds. Add the thickness of the plastic bobbin and you will realize that Akula never had enough room in there for 15/45, far from it. Especially since he used thicker wire on the primary side. That also explains why the wire going to the core side first had a very weak angle of entry. Yes, the second image is not a perfect portrayal since the coil bobbin has a depth of vision but keeping the ratio the same gives you a good enough confirmation of how much space the Center Ecore is taking in that bobbin. I could be wrong, but I doubt it even if slightly off it stilldoe snot figure all those winds.
You usually make the coil first with the FG resonance method and identify your targeted drive frequency, then the circuit to drive it. Think of Akulas' steps. He made a coil and started to drive it. He probably blew a mosfets after each time he hit the sweet spot before he got sick and tired and decided to start working to tame the flyback beast, hence he comes up with the following circuit which is great because it incorporates a standard self-running circuit as well. A very impressive mind indeed. We'll see if the IC side survives.
I had prepared a long explanation on why your wind method will be too difficult to run but decided not over post. Maybe when it's more the appropriate time.
So for me, the standard wind method with a copper strip under that last layer is what I see. Keep the strip a good 1/8th open. And this falls perfectly with what is drawn in his diagram. It's just that as in the past, Akula does not give precise wind numbers and from my previous post, you can realize that those numbers are pointless if you do not use the exact same wires and core you will have to tune your coil anyways. Maybe this is Akulas way of saying "You want it, then break your ass and figure it out".
In my book, this should be the first method for trials in order to both not risk blowing the circuit or the core and at least having a base measure for performance. Let's say the standard method lights your bulb blinding white and the circuit directs the self-running automatically, then we can all yell out Yes Yes Praise Be. Now you try your method and see it lights the bulb 1/2 bright or 1/4 bright and 2 times more amperage is consumed. At least you know that the core can dish out the juice in standard mode and in your mode you can then try other configurations to try and go above the standard method output. When in doubt start from where you know.
Think of this simple fact. The less secondary winds, the higher the amperage. If this ever is not OU, there are ways to add another secondary on that coil to draw some more so it still remains a good base of research and I commend anyone taking it.
My full respect and God Speed.
wattsup
PS: Hmmmmmm, just a thought, probably crazy but I wonder if anyone has ever tried to use four LEDS to make a bridge rectifier, what will happen? If LEDS are diodes, they should light up as energy is transferred between the LEDs unidirectional rectifier functions so all the output can be used. If you run it at AC 10Hz with a good enough impulse you should see the interactions of the lights, yes or no? Purely theoretical.
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Topic: Akula0083 30 watt self running generator. (Read 975335 times)
