3v OU Flashlight

[TinselKoala]

I dunno... the m could be a scribbled greek u ... wide lead and tail... so micro probably
it's definatly not enough to be milli; tesla coils are 30mH++... which thousands of turns...
and I doubt it means nano


you said yours were about 55 and 22...  but 1/10 of that inductance is only 1/3.1 the windings (cause there's a square in there)

No, that's what the schematic said, 27 and 54 mH (but then someone said Wesley said 2.7 ...?)  Mine turned out to measure about 6 and 20 milliHenry. But I am going to wind another lower inductance pair as soon as I have time to make the bobbin.

[Pirate88179]

There is something wrong here somewhere.   

The sinus I am seeing seems to be at the local powerline frequency. I know it is coming from the coil and mosfet switching though, because I can feel and hear the coil vibrating.

I set up the measurements to read the p-p voltage and frequency of the sinus. The two shots below are first, with the core and spacer and spring clamp installed, and second, with the core unclamped and no spacer, chattering away, and retuned for a stable waveform set. Current draw went up to over 300 mA.

OK, I'm done with this coil I think, and I'll be winding another one shortly. Akula couldn't be picking up a harmonic of his powerline frequency, could he?

Might be a good explanation as we know we can light an led with just an antenna and an earth ground. Possibly his circuit is just a good antenna?

Bill

[TinselKoala]

Might be a good explanation as we know we can light an led with just an antenna and an earth ground. Possibly his circuit is just a good antenna?

Bill

Well, maybe he has some powerful RF or he's living underneath the power distribution block for his apartment building or in a radar station, or something. That might account for the sinus. Once you have that sine wave or any action on the mosfet side, it will affect the oscillations of the MC34063 and cause the burst effect there. But I still don't see how that mechanism could couple into this circuit to light up the LEDs in absence of input power.

The story of him not being able to repeat the effect at another location.... where did that come from? I missed the original source.

It's more like the sine oscillation could be an artifact, common to both his environment and mine, picking up powerline harmonics, and it's being used as another Red Herring. But I think that there still must be either a hidden power source or a deliberate picking up of ambient power. I can't see how it could be done though, with just the existing circuitry. An additional cap or two, a diode, 78L33 voltage regulator and small loop antenna would be sufficient, but it doesn't seem like there is room on his board for all that.

[TinselKoala]

OK, last one for a while.

[tysb3]

                        @ TinselKoalayou are trying to get money from the bank but you don't know where they are. you are trying unlock every doors even toilets doors. you are still too far from the safes doors and you don't know the code of its.
you need to know what Akula was speaking in last conference on the skype:

http://webfile.ru/63bd3cd22caa0cb0343e3c0c52158678

Please save it and try to translate, it contains important information.