Kapanadze Cousin - DALLY FREE ENERGY

[verpies]

But, located the issue, and then able to connect with the scope probe inside the resistor from power (coil side) and the ground on the other side of the resistor  (only had a 1ohm high wattage ceramic cap, so it's 1, not 0.1).... it wasn't as clear connecting the probe the other direction.

Why wasn't it clear?
Was it because the pulses appeared to be "going down" ?

If "yes" then they were as they are supposed to be, because your 2N5401 transistors are pulling one side of the primary windings down to ground thus the pulses are "going down", too.
If you do not like these pulses having negative polarity then enable the "Invert" function, in the channel-setup of your scope.

In any case, the scope probe's "ground" leads should be connected to point A and the probe tips to points B and C.

When your scope channels are inverted and connected as I described above and the horizontal scale is stretched appropriately, the rising edge of the current in the primary should look like this:

[verpies]

From your videos, it seems that your primary is driven inefficiently (the blue case) and you are approaching the bad V/R current limit.
Anytime the current trace becomes horizontal, the (dΦ/dt=0) and no energy is transferred to the secondary windings.

This could be due to:
1) The Tr1 primary windings having insufficient inductances (e.g. due to insufficient turns)
2) The Current Sensing Resistors (CSR) being too large (they really should be 0.1Ω)
3) The 2N5401 transistors are not saturating completely (symptom: the voltage across the emitter and collector does not approach zero when the transistor is supposed to be conducting).
4) The switching frequency of the TL494 being too low (its pulses are too wide)

Also see this post.

Most likely the problem is the pt.1.
Once you move away from the V/R current limit and your rising current starts resembling a straight line (the green case), your Tr2 will become much more efficient and you will have much more energy available at its secondaries to drive the rest of your loads.

[Сергей В.]

to itsu

Try old 1N5408 for DSRD diode in Nano-Pulser !! Use HV capacitor for Nano-Pulser 1-2n 1.5-2kV DC, minimum.

[verpies]

Try old 1N5408 for DSRD diode in Nano-Pulser !! Use HV capacitor for Nano-Pulser 1-2n 1.5-2kV DC, minimum.

@Сергей

The schematic diagram you posted will keep the MOSFET conducting most of the time and a destructive current will flow from the +150V power supply and through the 220 µH choke and W1.

Please explain how the circuit from your schematic is supposed to work.

[d3x0r]

Why wasn't it clear?
Was it because the pulses appeared to be "going down" ?

If "yes" then they were as they are supposed to be, because your 2N5401 transistors are pulling one side of the primary windings down to ground thus the pulses are "going down", too.
If you do not like these pulses having negative polarity then enable the "Invert" function, in the channel-setup of your scope.

In any case, the scope probe's "ground" leads should be connected to point A and the probe tips to points B and C.

Sorry I was unclear; just a quick note; I had grounds connected on B and C and that was unclear because the probes at A saw the voltage drop from both sides... reversing and putting grounds at A and probes at B and C it was clear....


It only seems to be a 3V drop; maybe it's insufficient drive, maybe it's that the power supply I was using is 3A limited.. but probably that the transistor isn't switching completely... have to try some things in a few hours at lunch