Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

I attach pics of my breadboard layout of the Mikmur circuit showing the PWM on the upper half of the board and nano-pulser on the bottom half. The associated waveform is taken between collector and emitter of the PWM IGBT's. The snubber components used are shown in the circuit attached. The yoke secondary winding was loaded with a 360R resistor. The IGBT drivers used are TC4420. The G40N60 is a bit over the top in its current rating of 40A. A G20N60 is probably better suited for this application.

Edit: I missed an IN5408 diode across each IGBT collector / emitter.

[Hoppy]

6)Fast response diodes to provide dc to charge hv capacitor.This part i just find out.I believe it needs to be a capacitor rated for 350volts...400volts around 180uf.This needs to be a pulse capacitor(Brown capacitor seen in the Ruslan video) not standard electrolytic capacitor.This is the energy storage for the nanosecond pulser and the capacitor needs to be able to provide high rate of discharge which was selected for this purpose in order to generate pulse in kv.

Mag,

Thanks for your post on the PWM to Nano synch connections . Good idea about a switch for the channels.

Please expand on the above pulse capacitor. Are you referring to C37, the 500uF cap supplying the primary coil of the Karcher shown on your edited Mikmur circuit?

[itsu]

hi itsu,

This is the findings for today........

Magpwr,

looking good i guess, but i must confess that i am lost at where you are with your V6.2 or V7 

I am trying to replicate the original Mikmur (V1?) diagram and am slowly creating the shown A, B and C pulses which hopefully eventually drive the kacher.
Then i can continue with the Yoke setup.


Regards Itsu

[itsu]

I attach pics of my breadboard layout of the Mikmur circuit showing the PWM on the upper half of the board and nano-pulser on the bottom half. The associated waveform is taken between collector and emitter of the PWM IGBT's. The snubber components used are shown in the circuit attached. The yoke secondary winding was loaded with a 360R resistor. The IGBT drivers used are TC4420. The G40N60 is a bit over the top in its current rating of 40A. A G20N60 is probably better suited for this application.

Edit: I missed an IN5408 diode across each IGBT collector / emitter.

Looking great Hoppy, allthough that the pictures could be somewhat bigger as i am not 18 anymore 

Should the output of the IGBT's not be offset to each other? And somewhat wider?

Thanks,  regards itsu

[Hoppy]

Looking great Hoppy, allthough that the pictures could be somewhat bigger as i am not 18 anymore 

Should the output of the IGBT's not be offset to each other? And somewhat wider?

Thanks,  regards itsu

I'll try and get some better close-ups of the bread board at some stage after I've tested the nano-pulser section.

At moment my supply choke is not the right value - too high - the first suitable looking one I found in my inductor box. To get a full width waveform, I need about 45uH and will need to wind a suitable choke. This is an important component, as it will set the max peak voltage at the IGBT collectors.

Regards
Hoppy