Akula 1W PNP biasing

[TinselKoala]

Oh, well you have more experience than me, i need to learn from you, forgive me, LoL.

the interesting thing from akula circuit is there are always feedback to primary coils or reverse, it's hard  to formulate its basic concept, maybe you can. vid below shows a weird effect, i think the missing part / not shown from the vid is a synchronization.

Plasma Spark Mod by Aaron Murakami & Peter Lindemann,
www.youtube.com/watch?v=9oyrzLmyxeQ

What "weird effect"? The effect of having the same stuff repeated over and over in a video? The "weird effect" of showing sparks from a capacitor discharge? Or the "weird effect" of people actually falling for the BS that Lindemann and Err-on dish out?

Here, these are better "weird effect" videos for you.

http://www.youtube.com/watch?v=4XRwlNCF1PU

http://www.youtube.com/watch?v=T5I_BM4E00E

[Marsing]

What "weird effect"? The effect of having the same stuff repeated over and over in a video? The "weird effect" of showing sparks from a capacitor discharge? Or the "weird effect" of people actually falling for the BS that Lindemann and Err-on dish out?

Here, these are better "weird effect" videos for you.

http://www.youtube.com/watch?v=4XRwlNCF1PU

http://www.youtube.com/watch?v=T5I_BM4E00E

"The effect of having the same stuff repeated over and over in a video", almost, Guess if you can !! 

first vid "Extreme High Voltage: Flyback Demo, Jacob's Ladder, Added Capacitance" is not weird at all.
it would become "weird effect" if you share schematic for that.

second vid: http://analogouslyspeaking.blogspot.com/2009/06/neon-oscillators.html

[Vortex1]

What "weird effect"? The effect of having the same stuff repeated over and over in a video? The "weird effect" of showing sparks from a capacitor discharge? Or the "weird effect" of people actually falling for the BS that Lindemann and Err-on dish out?

Here, these are better "weird effect" videos for you.

http://www.youtube.com/watch?v=4XRwlNCF1PU

http://www.youtube.com/watch?v=T5I_BM4E00E

Where the heck is IGOR when you need him?.......turn up the voltage!

[Jeg]

Yes, I build it just for fun, I'm not go for OU in any way.  So I change the value a little, and maybe another new joule ringer. No harm experimenting a small circuit like this, I might learn something new too,  25 years in electronics circuit design, I still need to keep learning from others.
Let me know how it goes Marsing, I will share the result after I built it.

@True168
Do you have some more info on this circuit please? Any video of akula showing this?
What i would like to know is what transistors you use, and more details for the coils.
The coil length plays significant role and i wonder if there are any more instructions for their implementation.

Before some months i had some good results on a self oscillator circuit like this, and you should know that you can make it oscillate at a surprisingly high voltage and frequency.
Check the waveforms on this thread... http://www.overunity.com/14197/sstc-changing-frequency-issue/msg402194/#msg402194

I have improve it even more and now it oscillates at 200V pk-pk at about 50MHz.
If OU can be extracted from circuits like that, then at my opinion this is the way.
If you also like we can synchronize our tries so to help each other.
Thanks

[tru168]

Hi Jeg,




Thanks for sharing with me the interesting circuit you built.  Yes, oscillator with high frequency can generate high voltage, I always play with similar circuit when I'm in high school, especially when I passed my Ham Radio exam and start building transmitters.


  So far, I'm just studying the Akula schematic and not yet building it. I already gather a bunch of parts from my junk box, and will build it by this coming Sunday. I will share result and also parts I'm using. I have some transistors in my junk box,  SS8550 and SS8050 both NPN and PNP which can withstand around 1A current, and with decent gain. I will try also 2SD772, 2SB882, both are low saturation type of transistors , but with slightly lower gain than 8850/8050 . I will try 2SD966,  and normal 2SC1815/ 2SC1015.
A for the coil , I will try the air core as shown in video , and also make my own ferrite coil to experiment.


Here's another video I found in Youtube: http://www.youtube.com/watch?v=CYx-9WI8TNo


I attached the circuit diagram which shown in the video as well.