Kapanadze Cousin - DALLY FREE ENERGY

[br549]

Magpwr, 

i got mine from here:

http://www.evita.lt/en/kd226d-diodas-kd226d-si-d-800v-1_7a?search=kd226d

Regards Itsu

Hello Itsu:
I had a question about the filtering that you  used to clean up the nasty noise / spikes on the driver circuit for the yolk. I am having the same issue with mine, and was wondering if you could share the filter circuit that you used. My coil and yolk are very similar to yours, although I am using a microprocessor for the signal control (not sure how it's going to work out yet!!! still to early to tell). I am still working on getting clean and stable Katcker and yolk outputs.
Thank You and have a great day:
br549

[itsu]

Hello Itsu:
I had a question about the filtering that you  used to clean up the nasty noise / spikes on the driver circuit for the yolk. I am having the same issue with mine, and was wondering if you could share the filter circuit that you used. My coil and yolk are very similar to yours, although I am using a microprocessor for the signal control (not sure how it's going to work out yet!!! still to early to tell). I am still working on getting clean and stable Katcker and yolk outputs.
Thank You and have a great day:
br549

br549,

i think first of all you will have to accept some degree of spikes as it is virtually impossible with this
2x 6 or 2x 12 turn yoke setup to get rid of them.

Then i found it important to have my TL494 push pull set to max. duty cycle being 45% or so.
Anything less (below 40%) was heavily influencing the spike production in a negative way.

Then i basically used the snubber circuits as mentioned in the Mikmur original drawings, see below.
I had some modifications like can be seen in red due to components i had available.

After upgrading to 24V system (2x 12 turns primary), i had to change the 28V zener plus schottky diodes across
these primary turns as they were getting to hot and it now are 2x 18V TVS in series across each primary turn.

I still have some spikes,  but like i said, you will have to accept that.

Hope this helps,   

Regards Itsu

[Jeg]

Guys a little help please.
Is there anyone that remembers a youtube link which shows a Russian guy playing around the attached image? It had been posted before some 200 pages but i can't find it!

[Jeg]

Geo, thanks for your schematics. I just think that it would be better if the tank circuit oscillates at higher rates than mosfet's switching, so to give a chance for some oscillation cycles around the bps (switching) frequency.. Nice schemas though for sstc's! What about these input and output power indications on your circuits? Did someone try it and had this result? It would be interesting if you could say some things more about it.

Good results Void, and nice epic music on your video!

[br549]

br549,

i think first of all you will have to accept some degree of spikes as it is virtually impossible with this
2x 6 or 2x 12 turn yoke setup to get rid of them.

Then i found it important to have my TL494 push pull set to max. duty cycle being 45% or so.
Anything less (below 40%) was heavily influencing the spike production in a negative way.

Then i basically used the snubber circuits as mentioned in the Mikmur original drawings, see below.
I had some modifications like can be seen in red due to components i had available.

After upgrading to 24V system (2x 12 turns primary), i had to change the 28V zener plus schottky diodes across
these primary turns as they were getting to hot and it now are 2x 18V TVS in series across each primary turn.

I still have some spikes,  but like i said, you will have to accept that.

Hope this helps,   

Regards Itsu

Thank You Itsu for the information, I am ordering parts today.
As always, have a great day.   br549