TopRuslan

[Dog-One]

Scope picture separate.
Also did a FFT sweep on 9, 4 and 0 groundline windings

There is definitely something happening with six loops.
I'd be real surprised if you could get the same effect without
using the grenade coil.

Question...

Do you have a set frequency for your push-pull?  Or something
in mind for it?

Recall when you mix frequencies, you produce two new ones.
These two new frequencies would have to be centered around
the high frequency input, like:  F_HIGH + F_LOW   and   F_HIGH - F_LOW

So it looks like to me, the push-pull frequency sets the bandwidth
of interest.  And I'm wondering if this should include the high
frequency and just one of the two mixed frequencies; the other
gets attenuated.

[apecore]

Question...

Do you have a set frequency for your push-pull?  Or something
in mind for it?

Recall when you mix frequencies, you produce two new ones.
These two new frequencies would have to be centered around
the high frequency input, like:  F_HIGH + F_LOW   and   F_HIGH - F_LOW

So it looks like to me, the push-pull frequency sets the bandwidth
of interest.  And I'm wondering if this should include the high
frequency and just one of the two mixed frequencies; the other
gets attenuated.

I m using for installation the inductorloop frequency using the well known 470nf cap.
Its 23.31khz

[apecore]

Probably it is better to use a sub harmonic from the 2.0Mhz.
I was considering 81st... that would be then 24.691khz.

[apecore]

So it looks like to me, the push-pull frequency sets the bandwidth
of interest.  And I'm wondering if this should include the high
frequency and just one of the two mixed frequencies; the other
gets attenuated.

Adding to the data that the coil was not at resonance at 2.0Mhz the time i did the testing..
It was 1.9Mhz
This has bin verified by the V&I scoping.


Ground connection w/wo does not impact at all

[apecore]

There is definitely something happening with six loops.
I'd be real surprised if you could get the same effect without
using the grenade

I can do a similar test with another coil... does it matter what configuration?
Same length or a different grenade?