3v OU Flashlight

[semenihin-77]

Я не утверждаю, что так как у меня -правильно.... Напротив я за поиски нового, так как не получилось выжать больше чем на видео.


Я думаю на сердечнике из титаната бария попробовать, у меня были хорошие опыты с ним.

[eszdman]

Я не утверждаю, что так как у меня -правильно.... Напротив я за поиски нового, так как не получилось выжать больше чем на видео.


Я думаю на сердечнике из титаната бария попробовать, у меня были хорошие опыты с ним.

Я думаю если выжать все из феррита с большей мощностью, то можно будет повторять не так точно кол-во витков и т.д. больше людей смогут повторить

[Sergh]

I replicate this device with original ferrite and chips, without copper Foil -  see no sense to make this with foil.

don't work without batteries..


When i disable MOSFET and 100 Om & K561LH2 - this decreases current from the battery. Then current is very small, 1 - 3 milliamps, and LED glow (weakly),
but without battery - don't work

[TinselKoala]

Yes the russian ferrites must be special
I also do not understand Akula, first he makes kilowat device and now he makes a led circuit because it's popular in forums. Also Delamorto made device with 2 bright leds last year in russian forums, now he starts over to convince us with one led. I bed there is a small hidden battery maybe in capacitor.

Yes. I think Hoppy may have found the "smoking gun". There is no real reason why the potentiometer case tabs should be soldered to the negative bus of that particular circuit board.... but a button cell concealed inside the potentiometer case would cause this soldered tab connection to make perfect sense. I can testify that the 3V circuit I have been examining will run with _brilliant_ LEDs for a long, long time -- more than six hours, it hasn't gone out yet -- on a single CR2016 battery, about the size of a US quarter dollar coin. Different 3V button cells could be concealed in two of the pots on the multi-pot Akula board very easily. Or a supercapacitor could be re-sleeved with a different label, this would get the unit through any of the short demonstrations we have seen.

Meanwhile, I've completed winding a transformator on the flyback ferrite core. I spent a couple hours tuning and fiddling but I still haven't been able to get waveforms that look like what Akula showed for this circuit. I get brilliant LEDs and low current consumption but still not sufficient signal through the transformator to cause the mosfet to switch in the complete circuit. Definitely not 80 v p-p at the anode of the diode. And of course when power is _really_ removed the LEDs fade out over a few seconds. There is something missing....

[TinselKoala]

I replicate this device with original ferrite and chips, without copper Foil -  see no sense to make this with foil.

don't work without batteries..

Me too.

But I actually did put something like the copper foil into my transformator on flyback ferrite. I used a brass tube for the central part of a bobbin, then wound the smaller winding onto this, electrically connected one end to the tube. Then when the first winding was completed I wrapped it in aluminum foil tape, connected this tape to the second winding and wound more wire over the foil. Why not.
Still it doesn't work without batteries.

Did you get any scope waveforms like Akula's ?