field test unit no 001 "model T"

[Aziz]

Detection depth improvement is a question of coil size and coil current (N*I, N=turns count, I=coil current).

If Moodz can make large coils working, we surely can have a large depth detection improvement.

Yep, it's the end of Greedlab. I felt it in my urine today.
*LOL*
Aziz

[Davor]

Not from me. Some people might have some patently () unfounded expectations so it is better to learn the facts, thus the improvements will be more appreciated when presented realistically.

[moodz]

Since an order of magnitude gives you ~10% depth improvement, doubling in depth would require a few more, so even 10% is good.

... some more tweaking might squeeze out two orders .... I have not explored the depths yet ( of the technology or the new ground LOL ) .... is that another pun ??

[mickstv]

Hi Moodz, thanks for the reply and link, I'll check it out.



Cheers
Mick

[moodz]

Looks good Moodz. All the best.


BTW how much did the upper and lower shaft assy cost, I'm looking for something better than the dodgy homemade one I'm using.



Cheers
Mick

Thanks Mick ... check out the Miners Den ... http://www.minersdenmelbourne.com.au/ ...they have a catalogue somewhere ...

[mickstv]

Looks good Moodz. All the best.


BTW how much did the upper and lower shaft assy cost, I'm looking for something better than the dodgy homemade one I'm using.



Cheers
Mick

[Davor]

Since an order of magnitude gives you ~10% depth improvement, doubling in depth would require a few more, so even 10% is good.

[moodz]

Hey Moodz,

nice looking detector. Good job!

It's the end of Greedlab!!! *LOL*
Did you get sued too? Expect a nice love letter now. *LOL*
Cheers,
Aziz

Thanks Aziz ...

I dont know who its the end of ... but it is the end of conventional PI circuit topology thinking ..this opens up new ground ( no pun intended LOL ).

[moodz]

Just a magnitude or order of magnitude?

that would be an order of magnitude ... however this does not equate to a doubling in depth but certainly is spectacular for a prototype.

[straton]

... initial results for the experimental unit are showing a magnitude increrlase in sensitivity above prior art PI techniques.

... oh ... did I mention ground balotdeance and discrim

Fine tuning the code now the hardware is done.

[ATTACH=CONFIG]21746[/ATTACH]

Just a mangitude or order of magnitude?

[Aziz]

Hey Moodz,

nice looking detector. Good job!

It's the end of Greedlab!!! *LOL*
Did you get sued too? Expect a nice love letter now. *LOL*
Cheers,
Aziz

[moodz]

... the field test unit makes it off the bench.

... initial results for the experimental unit are showing a magnitude increase in sensitivity above prior art PI techniques.

... oh ... did I mention ground balance and discrim

Fine tuning the code now the hardware is done.

[Davor]

In case you get arcing anywhere, you'll be able to see it on a scope. Most probable places for arcing are connectors. Make sure cables are rated for over a kV.

[hdphilip]

thanks Midas,

i was thinking the same, the coil is a 11" Minelab mono, ( sorry BW ) it's new and hopefully be here in a day or 2, i'll use my Irf 740 at first, then after the fresh coil smell, wears off, i'll drive it with the Sic mosfet..... but in the meanwhile, i think i'll wind a 11 or 12 inch coil with some 16 awg wire, just to see how durable the Sic's really are.


Philip

[Midas]

I wouldn't worry about it too much. We're not talking orders of magnitude more voltage. Any decent PI coil is bound to have more isolation than required because its good for reducing capacitance. So if you blow it up it was probably crap to start with, therefore no big loss.

Midas