съём с резонансного контура не нарушая его. типа как у калабухова только проще
Нужен токовый контур и качер. Контур 400 кГц качер 4 МГц. Ток в контуре 250 вольт и около 12 ампер. Настройка на биение частот как в видео. Можно делать на сердечнике.
https://yadi.sk/i/9ZRL-aIYtx3Ng
"material removal without disturbing it with a resonant circuit. type like Kalabukhov only easier I need a current loop and Kacher. Circuit 400 kHz Kacher 4 MHz. The current in the circuit is about 250 volts and 12 amperes. Tuning in to the beat frequency in the video. You can take on the core."...

Hi boonk, thanks for sharing. May I ask, what is the frequency inside your current loop?

Guys need some help on an oscilloscope reading.

When I probe to any signal frequency, the waveform is always steady looking, without trembling or moving when triggered right. But when I probe a pulse train output as a result of two 555 mixing, waveform moves right and left, trembling, even if I tried all my available trigger options. It is about 390Khz at 20Khz intervals. Is it something that I need to adjust on my rigol? It looks like a continues phase changing. When I open it in time and zooming down to one or two pulses on the screen, everything steady again.   

That's normal behaviour for two unsynchronized oscillators.

It's called jitter you can minimise it with a 'd' type or you could use a synth but not worth it on most things unless your doing video work.

A G

This may be a little off-topic, but I'll try to make it as relevant as I can...

There is a phenomena with push/pull power convertors known as flux walking.
http://www.consult-cpr.com/Additional%20Pages/Eng%20LinksB7.html

If one attempted to apply this concept to an air-core transformer (such as
a Tesla coil or, uh hum, a grenade coil), what kind of effect might we manifest?

Now with a yoke core as Ruslan's device has, if we also have flux walking,
what effect might this have on the grenade coil?  We obviously should see
a current surge on the push/pull driver as we drive the yoke into saturation,
but suppose we don't (in a functioning system) and we know there is a DC
bias, what does that tell us?  Wouldn't it mean the stage after the yoke is
somehow correcting the flux imbalance?  And if it is, what must it be doing
to make that correction?


Just tossing this out there because I'm always looking for clues, wherever
I may find them, even if they are in the most unlikely places.

That's normal behavior for two unsynchronized oscillators.

It's called jitter you can minimise it with a 'd' type or you could use a synth but not worth it on most things unless your doing video work.

Thanks for the info guys. Indeed they are unsychronized. The question is: Will this affect the output result when i'll drive this signal to a mosfet gate? Or it will be a necessity to use a synth as AG said? Any other advice on this? In my simple experimental circuit, a 555 with a low KHz frequency resets a second 555 while oscillating at higher frequency.

I do not know what output you have in mind.
What are the respective frequencies of the two 555 astables anyway ?

Hi Verpies
I just want to drive my mosfet gate with this pulse train. Frequencies are about 20KHz and 300KHz. I asked about the operation of my mosfet, if it would experience any implication due to the unsychronized oscillator signals at its gate. I don't really care if the first or last pulse of the train are not complete in duration. I care about the clear on/off switching of my gate.

ps. By the way, after resetting 555, needs some time for the oscillator to start again, and this makes the first pulse of the train to appear a little wider in time than the rest pulses. 

I just want to drive my mosfet gate with this pulse train. Frequencies are about 20KHz and 300KHz.

So you can use the CD40103 chip driven by one 300kHz oscillator (e.g. the 555)  to have a 20kHz pulse train synchronized to it.

I care about the clear on/off switching of my gate.

So you need a strong (several Amperes) driver chip attached closely to the MOSFET.
I also recommend between 16V and 18V gate driving voltage.