Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

The nano chip cannot source enough current to saturate the transistor, which just gets very hot in my case. Increasing the pulse width makes things worse.

sorry for the confusion, but i presently am waiting for some MOSFET drivers as they are all blown up, so i have NOTHING in between the the nano-pulser (U3) and the BJT (only the 22 Ohm resistor), so i think Hoppy is right with his statement above.

To get this KT926A fully open we need something extra in between.

This is the diagram i am using now:


Regards Itsu

[itsu]

...or more current into the base.
If that positive pulse, visible on the red channel of the scope at 3m43s, coincides with the positive pulse on the base of the KT926A transistor then the DSR Diode appears to be connected wrong (backwards).

Yes it does coincides, see the yellow channel which is still on the base (before the 22 Ohm resistor).
So i have to swap the secondary leads (12t) from the little toroid.

It would help to record the current trace through the DSR Diode, since the mere voltage is too ambiguous to analyze the DSR effect.

What DSR diode would that be?  The one in series with the BJT, the coax attached one, or both?

Regards Itsu

[verpies]

As always, you have great ideas. Thank you. I'll work on it.

I appreciate the appreciation, but I already made a mistake.
Namely, the transmission line for the poor-man's 20GHz oscilloscope should be opened at the end (not shorted!)

[verpies]

The attached schematic is the first schematic I saw from Dally's website to support his demo video. I also read that the subsequent schematics showing driver transistors were produced by others. I can see no driver transistors on the supporting photos of the VCO and Nano PCB's.

If this is the truest Dally's schematic, then I see no way that this TTL NAND Gate can drive the Power BJT (KT926) directly into saturation.
If you see no intermediate transistors between the TTL chip and the Power BJT on the photos, then even more so.

[verpies]

...presently am waiting for some MOSFET drivers as they are all blown up, so i have NOTHING in between the the nano-pulser (U3) and the BJT (only the 22 Ohm resistor), so i think Hoppy is right with his statement above.

Acknowledged