Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

That's my point!  A saturable transformer is difficult to match. 
Its ferrimagnetic core has many parameters that need to be carefully tuned (e.g. dimensions, the AL value, BH characteristic - saturation point, permeability, frequency response).
You cannot just write: "use a 3cm OD ferrite torroid with 12 turns of wire" and expect it to work as advertised just because it worked for you or someone else.
The results are unpredictable unless you use the same core.

@Hoppy
I agree, but do you know where to obtain exactly the same core as Dally's?

Good point and not easy to match. I have a 10mm dia ferrite with the same other dimensions but this was recovered from scrap equipment so i don't know the source. I'm going for a suck-it -and- see approach with this one. I'm hoping that we may at least see some interesting reaction even if this components dimensions are critical, which I doubt.

Regards
Hoppy

[Vasiliy Buslaev]

By the way, I do not know how you do, I usually measure the permeability of unknown rings by the formula where is shown in the photo. May be useful.
Necessary to make the winding of 5 turns, any suitable wire. Coil placed evenly around the ring. It remains only measure the inductance of the coil and substitute the values ​​into the formula.

Regards

[Hoppy]

Does the КР1533ЛА3 Quad NAND Gate  belong to the 74ALS... family?
Why is it necessary to mix different logic families? AC and ALS ?

I have found that the 74HCT00N will not work in the VCO but the SN7400N or SN74LS00N will. Either will work in the nano pulser.

Regards
Hoppy

[verpies]

By the way, I do not know how you do, I usually measure the permeability of unknown rings by the formula where is shown in the photo. May be useful.
Necessary to make the winding of 5 turns, any suitable wire. Coil placed evenly around the ring. It remains only measure the inductance of the coil and substitute the values ​​into the formula.

That's a good formula if you know the dimensions and inductance L.
From my experience, L at 10kHz is very different than L at 10MHz.  I don't even try to measure at GHz...

P.S.
You have not offended me. Don't hesitate to disagree with me, if you think that I am wrong.

[Hoppy]

I managed to power up the completed device without the AT PSU before I'm away from the bench. Nothing special was observed during tuning with various caps across L2 and adjustment of VCO and no rise in output voltage on any winding. I'm not happy about the nano interface to the co-ax driver transistor as distortion of the pulse is visible at the collector. The nano with output disconnected produces clean sharp pulses. A ground earth was also applied as per schematic.

Regards
Hoppy