Self running coil?

[gotoluc]

Here is the scope shot with probe between base and source to see what the gate pulses look like.

When I disconnected the probe between the drain and source the current drop some more.

Now at this frequency it uses .000049

Luc

[gotoluc]

Here is a scope shot of both... channel 1 between drain & source and channel 2 between gate and source.

I also switched the probes and software to X10 and now it hardly affects the current this way.

Luc

[gotoluc]

Luc, What is your CH1 RMS now... Guess a lot lower? (maybe somewhere around 5.8V ?)

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NextGen67

See scope shot above ... it's at 8.59v RMS

Luc

[NextGen67]

See scope shot above ... it's at 8.59v RMS

Luc

Geat Still can go a little bit down, then you will probably hit the threshold of the mosfet. Tough possible can solve it again with magnet position

End for today. Late again.

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NextGen67

[mscoffman]

See scope shot above ... it's at 8.59v RMS

Luc

@gotoluc

I like this composite waveform...it's nice and placid. The toroid coil
is constant running at resonant pure sinewave f and is pumped by the
gate at resonating 2f damped at 50% oscillation.

It might be interesting to try to boost the gate to 4f.

:S:MarkSCoffman