3v OU Flashlight

[TinselKoala]

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]

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]

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]

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]

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