3v OU Flashlight

[TinselKoala]

Thanks for the tips, i will try them. The ferrite pots i used are B65701W 30 x 19 i got them from ebay.
I will also try other ferrite pots with the circuit. I don't think the circuit will self run but i like trying different coils to see what happens.


Regards

Apparently the ferrite pot cores are not necessary. Akula has shown several different versions that don't use the pot core.... it is another Red Herring in my opinion. Good that you are trying them though... but I am building this version which does not include the pot core, just an ordinary flyback transformer ferrite. Of course Russian ferrites are special..... aren't they?

[TinselKoala]

This chip is also used as an LED driver as you are probably aware, so its presumably quite efficient at this task.

I'm still considering the possibility of coin-cell or two in a pot, wired internally to the pot solder tabs. Its a pity we cannot see the underside of the 3V OU flashlight board, so that it might be possible to draw up a meaningful schematic.

I think that the schematic is actually correct... as far as it goes, and with the problem of the decimal point still unresolved. The DC-DC-LED side works fine by itself, the inverter driving the mosfet works fine in isolation....

Yep, with proper setting of the trimpot and the inductor on the "primary" side (the side connected to 43063 chip) the current draw can be minimized, and I already know that the circuit will light the LEDs brilliantly using a 3v button cell, eg CR2016. But for how long? Soon, I will know that too.

[avalon]

I did hear Wesley say 5.4mH in his translation video.

Wesley's translation is wrong. Karnaukhov said 54 mH, not 5.4 mH.
There are many more discrepancies in Wesley's translation. He needs to work on his Russian. (Come to think of it, he needs to work on his English too.).

~A

[verpies]

Wesley's translation is wrong. Karnaukhov said 54 mH, not 5.4 mH.

Then Akula's core must have a hell of a permeability.

[Grumage]

Wesley's translation is wrong. Karnaukhov said 54 mH, not 5.4 mH.
There are many more discrepancies in Wesley's translation. He needs to work on his Russian. (Come to think of it, he needs to work on his English too.).

~A

Bad form Sir !! 

Are you multi lingual ??

Wesley has helped us in so many ways. I feel you owe him an apology !!

Grumage.