Akula0083 30 Watt Self Running Generator.

[Thestone]

replica lazersaber


http://youtu.be/SgiVsHFdl3E

Holly Macaroni Shit!!! is this for real... ?

[d3x0r]

Holly Macaroni Shit!!! is this for real... ?

sure all 10 minutes of runtime....
here's some more food...
https://www.youtube.com/watch?v=4wSPZxQXYR4
https://www.youtube.com/watch?v=Rc9Ilvs38gQ
https://www.youtube.com/watch?v=3g5_x1TQsPA

[pulp]

So is this the secret of Kapanadze? If you add more and bigger capacitors can take bigger load?

[Jeg]

I wasn't sure where to post about this here will do. Maybe one of the folks experimenting with TV yolks have noticed the effect I will describe below, or maybe it is normal, although I can't say I've seen the effect so pronounced.

Setup is a regular smallish TV yolk with around 100 turns on each half of 0.5 mm magnet wire one side has about 4.25 mH and the other is about 3.85 mH, I connected the function generator to the 4.25 mH winding with a sine wave signal at almost full amplitude which I think is about + - 18v and scoped both windings. The LC calculator here http://www3.telus.net/chemelec/Calculators/LC-Calculator.htm says that with 4 mH and 100 pF capacitance (added for instrument capacitance) the resonant frequency should be at about 250 kHz and it does seem as though it is as the amplitude of the wave forms peak and the undriven winding increases voltage from slightly less than the driven winding to about the same.

But here is the interesting part when I keep increasing the input frequency then the undriven waveform distorts then increases amplitude a lot but the driven one doesn't ( it's on the opposite half of the yolk, they are clipped together), then when the input frequency approaches around 1000 khz the undriven winding phase differs from the driven one and develops a quite high voltage sine wave which goes to 330 volts pp while the driven side is still 14 volts pp. I haven't used the HV probe yet to see actually how high it goes.

My question is. Is this normal ?  I can make a quick video clip to show it if get time tonight. It's kinda interesting.

I would not have thought that driving the winding at a frequency so much above the LC resonance would show such voltages. What am I missing ? I'll investigate some more and get some better numbers make a drawing or short video clip or something to better explain, typing is a pain.

..

Correction above : the undriven wave form peaks at 330 volts pp with the driven wave form at 14 volts pp and 90 degrees phase difference between them at 1040 mHz.

I guess I'll try some capacitors and see what happens. 

..

Dear Farmhand did u find your answer?

[Farmhand]

Not really but I am thinking the amplitude peak I seen at the lower frequency must have been a odd harmonic or something and I wasn't paying attention, the big peak at the higher frequency was the LC resonance peak. I'll try again with a better switching circuit rather than the FG and use more power. Try to look into this rattling the core for energy thing. 

..