Partnered Output Coils - Free Energy

[picowatt]

Tinman,

Is the steel putty you used for molding the outer toroid electrically conductive when cured (as would be indicated with an ohmmeter)?

PW

[MarkE]

Brad stated in the video that the reason he was driving the gate negative, was to ensure the FET switched off faster, and not to depend on the 10k gate resistor to "pull it down".

Brad, you aren't really depending on the 10k to pull down the gate, because your FG will be doing that. The FG is not an open-collector type so even though a pulldown resistor is always a good idea so the gate is never floating, it is doing little in regards to switching the gate off; your FG is doing that for the most part. If you readjust the gate drive to 0V~+10V, I doubt you will notice much if any difference in the switch-off.

.99

With a FET that has a small gate charge that is true.  The FG has a 50 Ohm output impedance that forms a pole with the gate capacitance.  Overdriving does speed up the turn-off.  Tinman's scope may be too slow to see the difference. 

[picowatt]

With a FET that has a small gate charge that is true.  The FG has a 50 Ohm output impedance that forms a pole with the gate capacitance.  Overdriving does speed up the turn-off.  Tinman's scope may be too slow to see the difference.

And that 1K resistor in series between the FG and gate...

[MarkE]

And that 1K resistor in series between the FG and gate...

I did not see a schematic.  1K is awfully big.  Unless he is careful with his wiring, it could easily set-up oscillations during the transitions.

[tinman]

Tinman,

Is the steel putty you used for molding the outer toroid electrically conductive when cured (as would be indicated with an ohmmeter)?

PW

No-the steel putty is non conductive.