It looks like those jumpers on the board are the isolation points for the HV DC side. the caps look to be in parallel. Pull on side of those jumpers and you could see what you are putting into the switching section.

I would think something like this diode and cap to maintain power on the chips would extend it beyond the end of the input?

Quote from: magpwr on October 03, 2014, 06:29:39 AM
hi itsu,

It's hard for me to explain this part as i ever worked with TL494 but instead i'm using SG2525 or UCC3825 for more than 200khz.......

Magpwr,

thanks again for all this info.

From your Akula drawing i added the R2 and diode coming from the other MOSFET driver and sure enough, it
now closely match the red, blue and green signals from both this Akula and Ruslan diagram......., see screenshot 1.
Could it be that whomever draw this Ruslan diagram "forgot" this R2 and diode connection?

Just to be clear, i mean the R2 + diode as can be seen in the purple square below.


Regards Itsu

Quote from: Void on October 03, 2014, 12:25:44 PM
For Russian speakers, I think Ruslan has commented on realstrannik that he would be willing
to use some group chat program to hold a group chat and answer people's questions.
Don't know if that will happen, but Ruslan suggested it recently, from what I could understand
using Google Translate anyway.  Nick, do you speak some Russian?

hi void,

Last night i have seen the part in Russian forum where "he" will select certain capable Russian members for some online group chat.

It's best not to intervene as Russian members in forum do have difficulty in understanding his ou device.

"Let nature take it's course"

Quote from: d3x0r on October 03, 2014, 03:40:57 PM
I would think something like this diode and cap to maintain power on the chips would extend it beyond the end of the input?

hi Jeg,

I have seen circuits which are powered by signal using only 2 wire -1 signal 1 negative.

I don't recommend diode to be there because i like the input signal around 27khz to stay clean /less distortion at the input stage and it's better to use 7805 or 78L05 voltage regulator instead as already implemented in nano generator circuit.