3v OU Flashlight

[TinselKoala]

@magpwr:
You are right about turns vs. inductance. The way I do it is empirically. I wind a  few turns onto the form and then strip off a tiny bit of insulation from the wire and take an inductance reading. Then I know, ballpark, my own particular microH/turn ratio, so I can wind some more turns, then check inductance again, until I get to the desired inductance. In that last coil outer winding I was shooting for 5.7 mH and wound up with about 5.9 mH, not bad for an amateur. I couldn't even tell you how many turns, less than 150 but more than 100 probably.

[picowatt]

The purpose of the inverter section is to act as a Red Herring. There is another one of Akula's miracle versions that only uses the 34063, no inverter.  And as I show in the scopeshot above, it is unlikely that any mosfet would actually switch. So the whole thing actually has zero function if a mosfet is used. The TIP3055 does work though.... but does it have a material effect on the operation of the device? Not that I can tell. The LEDs still dim and go out in a few seconds after the power is removed. Duh.

I've lost count of how many different devices and schematics he's published. It's like LMM on methamphetamine, good thing I can't read Russian.

Yes, I agree with your analysis of the inverter functioning.

Thanks for looking and posting, I really appreciate your insights and thoughts on this matter.

TK,

I see R3 is a 100R not a 200R, so I should have said that even if/when the MOSFET/transistor does turn on, it only appears to apply an additional 100R load to the rail.  I am, however, surprised that the sine wave gets through with C5 installed (assuming I am looking at the correct schematic).

PW.

[dewetw]

IF YOU NEED COPPER FOIL TAPE:

I have found some copper foil tape at my local hardware store in the gardening section. It seems snails don't like copper so if you put some copper tape around your pot plant they keep away. I say let the snails feast, we've got something better to do with copper foil tape 

PS: You may have missed my post 298 and 300 on this thread. I hope admin is quick with this one 

[Pirate88179]

IF YOU NEED COPPER FOIL TAPE:

I have found some copper foil tape at my local hardware store in the gardening section. It seems snails don't like copper so if you put some copper tape around your pot plant they keep away. I say let the snails feast, we've got something better to do with copper foil tape 

PS: You may have missed my post 298 and 300 on this thread. I hope admin is quick with this one 

Good idea.  Also, craft stores sell it in their stained glass section.  I got some there for making circuit board traces.

Bill

[TinselKoala]

IF YOU NEED COPPER FOIL TAPE:

I have found some copper foil tape at my local hardware store in the gardening section. It seems snails don't like copper so if you put some copper tape around your pot plant they keep away. I say let the snails feast, we've got something better to do with copper foil tape 

Thanks for the tip. Yes, I know about snail repellent and also about stained glass copper foil. I'm working on a very tight budget and I already have a big roll of aluminum duct tape, and some brass tubing of the ideal size for a bobbin for the flyback core. I'll be happy to review any empirical reports you have that show an Akula device running on copper foil, but another identical one not running on aluminum foil.

PS: You may have missed my post 298 and 300 on this thread. I hope admin is quick with this one 

I didn't miss the post of the patent concerning Cold Fusion ignited by Nuclear Acoustic Resonance.... it was very amusing. I generally prefer the SF pulp magazines like Analog and SF&F, but occasionally the USPTO does publish a good one.

And the other post concerning your explanation and theories of operation are also very amusing. But you seem to be missing an important point. It does not matter what your theory is, how smart you are or how beautiful your mathematics. If it doesn't agree with experiment, it's wrong. (Apologies to Richard Feynman.) What "we" or at least I am doing here is examining a claim that a particular device behaves in a certain manner. This device is constructed of COTS (commercial off the shelf) parts and enough information has been presented about its construction and operation that any person "skilled in the art" should be able to build one and duplicate the results. There is no unusual theory or explanation required or demanded, and unnecessary speculation and even _wrong_ theoretical ideas are not very helpful, in my opinion. If you bake a cake according to a recipe, no theory of ovens or cakes is required, the recipe either produces an edible cake without burning the house down... or it doesn't. If it doesn't, and you've not done something stupid like failing to cut slits in your foils ... then there is something wrong with the recipe. Maybe you've got a recipe for a tuna casserole, thinking it's a cake. Not going to get a chocolate cake from that! Even though it's a good recipe. Or maybe the recipe doesn't make anything at all, like so many we see here. At least Akula's recipe is making something!

(Using the mass of the electron in an attempt to explain the S-shape of the plasma channel between two HV electrodes.... that was great, really enlightening. Are you a CRT designer, I wonder? Have you done much work with high voltage apparatus, plasma streams, corona discharge, static electricity? I'd love to hear about it.)

In this case.... no cake so far. Nuclear Acoustic Resonance hitting the wrong note in my apparatus, preventing the LEDs from operating? Great, please provide some empirical support for that conclusion. Secret irradiated Soviet ferrites necessary? Great, send me a set, and I'll do what apparently nobody else has actually done: I'll test them side by side with fake Chinese ferrites in the same apparatus, and we shall see what difference the irradiation makes. 

/sarcastic rant