Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

Сергей В.,

as much i appreciate your advice and suggestions to solve it, i have to agree with Hoppy when he says:

It should work with only the 74HCT00 as source.
Or could it that the Russian KP1554 or KP1553 are more powerfull, and are able to fully open the BJT?

Anyway, i have some K7*4*2 toroid's on order, so will see if that makes any difference then.

Regards Itsu

Given that the 74HCT00 sources only up to 4mA, I think it unlikely that the Russian version will be significantly different. however, it would be helpful if someone could post the spec of the KP1554 or KP1553, to be sure.

Regards
Hoppy

[verpies]

Sorry about that, I rarely write in this forum.

You can apologize by measuring the inductance of your 12 turn winding on that little toroid

If you really want to suck up and contribute to this forum, then wind as many turns as will fit on that little K7*4*2 M300HM core (remember to count the turns) and measure the inductance on this new winding (all other windings unconnected!).

If you measure the inductance then you'll earn the honor to appear in this table:

Who         Turns   OD [mm]    ID [mm]    TH [mm]          L [μH]           μ_r       AL [μH/N²]     Saturation Current [A]
---------------------------------------------------------------------------------------------------------------------------------------------
Hoppy           6           11.0            5.0             4.0         88.000       3875          2.444                      ? ? ?
Hoppy         12           11.0            5.0             4.0       312.000       3435          2.167                      ? ? ?
Black_Bird   10             2.0            4.5             4.0           3.500           45          0.035                      ? ? ?
Itsu               6           16.6            9.4             6.9       173.000       6123          4.806                      ? ? ?
Itsu             12           16.6            9.4             6.9       669.000       5920          4.646                      ? ? ?

...and if you make multiple inductance measurements with different amounts of turns, then we might be able to calculate the leakage inductance or the error of your inductance meter, like here.

[verpies]

Given that the 74HCT00 sources only up to 4mA, I think it unlikely that the Russian version will be significantly different. however, it would be helpful if someone could post the spec of the KP1554 or KP1553, to be sure.

I hope that the KP1554 or KP1553 can source more current for several nanoseconds, because 4mA flowing into the base will translate to only 240mA out of the collector (assuming the max β [or h_FE] = 60, as stated in the datasheet of KT926A).

By comparison, Itsu was getting an impressive 20A for 50ns out of his small MOSFET.

[madsatbg]

You can apologize by measuring the inductance of your 12 turn winding on that little toroid

Hi All,


OD = 10 mm
ID = 6 mm
TH = 3 mm



W 1 = 3 turns = 9.8uH
W 2 = 10 turns -104,5 uH


Ferrite Ring is from energy saving lamp China

[Hoppy]

I hope that the KP1554 or KP1553 can source more current for several nanoseconds, because 4mA flowing into the base will translate to only 240mA out of the collector (assuming the max β [or h_FE] = 60, as stated in the datasheet of KT926A).

By comparison, Itsu was getting an impressive 20A for 50ns out of his small MOSFET.

Apologies, I misread the current. The absolute max limit for source and sink current is 25mA, so with beta of 60, this gives 1.5A max for collector current.

Regards
Hoppy