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Author Topic: 3v OU Flashlight  (Read 563441 times)

tysb3

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Re: 3v OU Flashlight
« Reply #240 on: April 26, 2014, 10:30:50 PM »
@ Pirate88179The problem is that the claimant don"t want to disclose all essential important details. and if you don't believe him you are wasting the time with no reason.

It's better reason to show, how you can fake this device.

TinselKoala

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Re: 3v OU Flashlight
« Reply #241 on: April 26, 2014, 10:39:16 PM »
Here are some more facts I've gathered.

1. The TIP3055 works, whereas the mosfet I tried did not. That is, the bipolar transistor is switching fully when it gets the appropriate output voltage from the inverter chip, and it pulls down the positive rail when it does, and I get a good signal, although not a pure sinus or at 270 Hz, from the testpoint, at certain very precise settings of the trimpot.

2. The signal from the anode end of the Schottky diode I am seeing is very similar to the Akula signal, but at about 1/10 the claimed amplitude, and still without the regular response to the amplitude of the sinus. I get 7-8 volts maximum amplitude from the chip here. Have we determined for certain that Akula's probe for this channel is incorrectly set?

3. I tried a 34063 chip from another manufacturer and got somewhat different waveform results. The first chip is marked "sum" which is a mark I don't recognize (the chip from the dollar store USB adapter.) The chips I ordered from Ebay arrived today, and they are marked "ON" which is ON Semiconductor and corresponds to the data sheet attached below, for 34063AP1. I think I like the ON Semi chip best.

4. The system is also very sensitive to supply voltage and current. The first PSU I used was my small HP721A which has 225 mA current limiting. But I've found that at 3 volts supply the circuit wants to draw as much as 270 mA, so some of my early results are contaminated by the PSU current limiting function rolling back the voltage. With a stronger regulated supply I get, again, somewhat different performance at 3 volts input.

5. No matter what I try so far, in terms of coils, phasing, pot settings, PSU settings, whatever... as soon as I unplug the power the system reverts to straight DC to the LEDs from the capacitors, and it fades out over a few seconds.

tysb3

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Re: 3v OU Flashlight
« Reply #242 on: April 26, 2014, 10:41:11 PM »
 @Tk
I think not only in Russia secret military lab but in USA secret military lab knows  more than Akula.
Akula just "wasting"  their secrets.

TinselKoala

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Re: 3v OU Flashlight
« Reply #243 on: April 26, 2014, 11:12:44 PM »
Yes, you are probably right.

ETA: I forgot to mention that the 270 mA is the maximum draw. The current draw goes way down when the trimpot is adjusted right, and for the alt.snakeoil trial run with hidden battery I had the current draw down to around 25 or 30 mA by adjusting the pot to the point where the LEDs just started to dim.

TinselKoala

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Re: 3v OU Flashlight
« Reply #244 on: April 27, 2014, 12:08:17 AM »
OK, here is an example scopeshot from my build.

I am inputting 3.0 volts and the system is drawing about 80 mA. I have the TIP3055 transistor instead of a mosfet in place. I have the larger inductance of the flyback ferrite transformator hooked to the 34063 side and the smaller inductance to the inverter side. Phasing makes a difference. Scope probe positions as on the schematic. The LEDs are blindingly brilliant, much brighter than in the alt.snakeoil video. Potentiometer adjustment is critical.

The rest of the needed info is on the image. The top trace portion that is outlined in yellow, and the corresponding areas on the other cycles, is filled with the spiky output of the 34063 but at very high frequency; the scope can't show them at this slow timebase. They appear to be happening at about 40 kHz but the frequency fluctuates rapidly.

So far, this is the most "sinus" like signal that I have been able to get from the inverter Pin 13 - coil "secondary" connection. Doesn't it look like a great shark fin? I wonder if that has any significance.
 :o


I suppose I should hook up the DSO for more detail. It's a lot easier to explore the problem space with the analog scope though, since changing settings is a lot easier on the analog.

TinselKoala

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Re: 3v OU Flashlight
« Reply #245 on: April 27, 2014, 12:31:16 AM »
OK.... mosfet switching success....

Without changing _any_ settings, I put in a BUZ11A mosfet instead of the TIP3055. The resulting waveform is almost identical to the above! But the current draw went down to 60 mA. And the LEDs seem even brighter, if that's possible.

The BUZ11A has a lower gate threshold voltage than the other mosfet I used.

I am kind of disappointed because the big TIP3055 looks very macho on my board. Much more macho than the puny TO220 case BUZ11A. But the mosfet does not suffer from the base-emitter current problem, as long as there is sufficient juice to fill the gate capacitance in the first place.

alejandroguille

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Re: 3v OU Flashlight
« Reply #246 on: April 27, 2014, 05:05:55 AM »

Because all designs are incomplete?
Much time is spent on confusing people ...

Akula = confusion (No full and clear circuit.)
Don Smith = impossible to get those components. (No full and clear circuit.)
Kapanadze = Never public all .. for me it is fake.

The resonance exists, but I do not let us see it ...

..but there are people in this forum that is dedicated to confuse.

scratchrobot

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Re: 3v OU Flashlight
« Reply #247 on: April 27, 2014, 06:12:02 AM »
Хорошо я объясню принцип резонанса и как его найти. Только от этого мой карман тяжелее не станет  :-\.
Я показывал в "Фонарик видео 1" как я нашел резонанс с ферритовыми чашками, сейчас объясню подробно.
На каркас мотается катушка, ее индуктивность в чашках должна быть 115 uH, на чашки наклеивается медная фольга, к ней подключаете осцилограф. Генератором прямоугольника ищите резонансную частоту феррита, так как он сегнетоэлектрик то в резонансе у него синус будет увеличиваться, максимальная амплитуда синуса- наша частота. Это способ узнать частоту любого феррита в домашних условиях  :). Далее все просто, чтоб использовать этот резонанс - нужно его снимать, для этого мотается контур LC на эту частоту резонанса. Один конец контура всегда подключен на входящий конденсатор, а второй коммутируется ключом. Вот так это работает, да на советских ферритах это просто.

Well , I will explain the principle of resonance and how to find it . Only from my pocket harder will not  :-\ .
I showed in the " Фонарик видео1" I found resonance with ferrite cups, now explain in detail .
On the frame is wound coil , its inductance in cups should be 115 uH, cups on a copper foil glued to it connect oscilloscope . Generator rectangle looking resonant frequency ferrite , as it is in resonance ferroelectric his sinus will increase, the maximum amplitude of the sine - our band. It is a way to learn any frequency ferrite at home :) . Then everything is simple to use this resonance - you need to take it off , this teeter LC circuit for the frequency of resonance. One end of the circuit is always connected to the incoming capacitor , and the second key is switched . Here 's how it works , but on the Soviet ferrites is easy.

I have a new russian pot core to play with and i wound a coil on it, took 3 layers of wire to get 115 uH.
Now i will try your method to find resonance of ferrite.

Why everybody is talking about Akula, i thought we were replicating Semenihin-77 device?

verpies

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Re: 3v OU Flashlight
« Reply #248 on: April 27, 2014, 11:48:04 AM »
I have a new russian pot core to play with and i wound a coil on it, took 3 layers of wire to get 115 µH.
I have seen the Russians write мкХ or mkH when they mean µH.  I've seen them abbreviating mkH to mH, too  >:(

Why everybody is talking about Akula, i thought we were replicating Semenihin-77 device?
Because we are distracted by a video of a very similar device made by Akula.

scratchrobot

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Re: 3v OU Flashlight
« Reply #249 on: April 27, 2014, 04:00:37 PM »
I have seen the Russians write мкХ or mkH when they mean µH.  I've seen them abbreviating mkH to mH, too  >:(
Because we are distracted by a video of a very similar device made by Akula.

Exactly!
Semenihin-77 posted a new video,
http://youtu.be/eac1_pLNhnQ

havuhung

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Re: 3v OU Flashlight
« Reply #250 on: April 27, 2014, 04:20:59 PM »
Hi scratchrobot,
In the video clip, I guess that's a piece broken out of a toroidal magnet speakers? . . :D

scratchrobot

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Re: 3v OU Flashlight
« Reply #251 on: April 27, 2014, 05:03:05 PM »
Hi scratchrobot,
In the video clip, I guess that's a piece broken out of a toroidal magnet speakers? . . :D


Hi havuhung,


I have no idea, maybe or ferrite, looks like he solder on it, maybe he put copper tape on it?
I will try it on different materials, looks interesting to me ;)


It's BaTiO3 (barium titanate).
http://www.ebay.com/itm/Piezo-Barium-Titanate-Ceramic-Material-Silver-Plated-/150750545080?pt=LH_DefaultDomain_0&hash=item23196ec4b8
In the description it says that John Hutchinson made a battery out of material just like this that never needed charging  :o 
http://www.dailymotion.com/video/x1a1c0y_barium-titanate-test_news

More distractions  ;D


havuhung

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Re: 3v OU Flashlight
« Reply #252 on: April 27, 2014, 05:58:52 PM »
Hi scratchrobot,

Thank you.

TinselKoala

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Re: 3v OU Flashlight
« Reply #253 on: April 27, 2014, 06:21:04 PM »
This morning's scopeshot.

3.0V input 320 mA
LEDs one blue, one white
flyback ferrite core halves separated by 2mm wooden spacer and tightened down with clipspring
Larger inductance on inverter side, smaller on 34063 side
2.2 pF capacitor across the 3.3 K resistor
very careful tuning of trimpot

Both channels at 2 V/div,   5ms/div horizontal

I'm preparing a video of some interesting things I saw last night, before I changed the LEDs and added the little capacitor.
I'll be switching to the digital scope this afternoon.

I think that the inductances I am using are waaaay too large (about 6 and 20 milliH). I'll be winding another coil bobbin with less wire later on this afternoon. I am now thinking that the 27 and 54 numbers might actually be 2.7 and 5.4 milliHenry or even 27 and 54 microHenry.

TinselKoala

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Re: 3v OU Flashlight
« Reply #254 on: April 27, 2014, 06:26:36 PM »
Exactly!
Semenihin-77 posted a new video,
http://youtu.be/eac1_pLNhnQ

Nothing at all remarkable in that video that I can see. I don't understand most of what he's saying, but he's using a 1 volt signal of 121 kiloHertz and showing that the LEDs don't light when directly connected to the FG but do light when he has more inductance or capacitance in the circuit.  I have many videos that show the same thing as small parts of other demonstrations. This does not appear to me to have anything to do with the Akula 3v flashlight circuit.

The material does not look like BaTiO to me. But who knows what Soviet surplus barium titanate might look like.