Magnet coil cores, demagnetization power and Lenz delay.

[synchro1]

Then you would bet wrong.  You deeply resent a straw man you just built?  Well then good for you.  Those straw men can be tough characters.  Are you imagining some conversation that you think you have been having?  Perhaps you would like to point out the posts where you proposed a design and it was unfairly shot down.

I'm the inventor MarkE! You're just a case of pediculosis.

[MarkE]

I'm the inventor MarkE! You're just a case of pediculosis.

It seems you've invented imaginary conversations and men of straw to slay.

[synchro1]

It seems you've invented imaginary conversations and men of straw to slay.

I performed a series of tests last year involving series bifilar resonance and rise in Ohmic resistance in a ferrite core with a permeability of 1000. I conduct a tutorial on this thread. A tiny trimmer pot would deliver all the increase in detector sensitivity required.

This concludes the discussion.

[synchro1]

Look at this Ohm meter to Op Amp circuit schematic: The negative electrode of the 9volt battery just connects directly to the 22K resistor then to the number 4 pin of te Op Amp.

Here's a good video by TinselKoala where he adds a couple of transistors to this type of sensor to run a push pull electric motor or an electro magnetic coil:

https://www.youtube.com/watch?v=-hNEpCwRX_k

[MarkE]

Look at this Ohm meter to Op Amp circuit schematic: The negative electrode of the 9volt battery just connects directly to the 22K resistor then to the number 4 pin of te Op Amp.

What is there to see?  It's a bridge that reverses balance when a small enough external resistor is connected.