field test unit no 001 "model T"

[Sean_Goddard]

Hi Midas, good to see the positive results. I've decided my problem it's some sort of strange issue with the analog CRO setup, so I might go and have a look on EBay for a digital replacement.

Mick

Just a thought, WHERE are you connecting the 'scope "ground"? I've spent hours hunting a fault only to find I'd got my connection point wrong and so I was upsetting the circuit operation but then sometimes a box of rocks has a higher IQ then me!

[authere]

Hi Moodz,

Whether you like it or not you are competing and doing a damn fine job of it as well!!!!

I can see the sweat pouring off their brows, lets hope it comes together as predicted and starts us off on a new adventure that opens up the prospecting fields everywhere!!

It'd make a fantastic christmas present for someone we all know!

Ron

[moodz]

Hi Moodz,

Great to hear you are onto the build,looking forward to having a M/L beating machine and a alternative choice for us prospectors....one thing i can relate to is when i made a 1mx1m square coil i could get a beer can at 6'(empty of course!!)

Ron

Thanks Ron .. I'm not really trying to compete with anyone but I am aiming for a beer can at 6 feet with a 18 inch coil ... and I reckon I will get there..... I will know in the next few days

[authere]

Hi Moodz,

Great to hear you are onto the build,looking forward to having a M/L beating machine and a alternative choice for us prospectors....one thing i can relate to is when i made a 1mx1m square coil i could get a beer can at 6'(empty of course!!)

Ron

[moodz]

...been slaving over a hot soldering iron all day here LOL ....the first version of the detector is finished and I am conducting field tests ....so far so good .... I have one small problem that is on the verge of being solved .. the current detector auto ground balances however it is very sensitive to magnetic fields ( eg earth field and magnets of course ).. With an 18 inch mono coil the unit picks up a handheld magnet from 12 feet away which is not good unless you want to detect magnets ...however the plus side is that this means my signal processing channels are working well.

[maca404]

Been away from this thread to ages lots gone on I see, from what I have read moodz is taking this from a openly shared project to his own private comercial design ?. Bit of a shame but I guess most good open projects go that way when there is a bob in sight, I hope it all works out it would be awesome to see this as a finished product.

[sido]

Bye Mr. Dolphin, see you once the patent is lodged

We hope so, but afraid maybe not. Good luck with it Moodz

[UrbanFox]

2. Ferrite rods have no impact.

You are not trying!!

[Davor]

Bye Mr. Dolphin, see you once the patent is lodged

[moodz]

Until you announce what that exactly is, urbi et orbi, be prepared for more seasoned questions. A paradigm shift is always questioned from the perspective of the old one.

I suppose so .... my patent guy says I shouldn't even post here so I will go quiet for a while as I build up some different prototypes. ... cheers and thanks for all the fish.

[Davor]

Until you announce what that exactly is, urbi et orbi, be prepared for more seasoned questions. A paradigm shift is always questioned from the perspective of the old one.

[moodz]

Aziz, I have seen the waveforms Moodz has presented in earlier posts and which he says are damped.

I see those waveforms as not being damped adequately for certain purposes. The increased amplitude seen with a semi damped ringing waveform is nothing new, and those who have experience with PI design have been aware of this fact for years.

The problem previously seen with this underdamped waveform arises with the influence of certain ground upon the RX signal. This ground influence can be simulated by waving a soft ferrite rod in front of the coil.

Of course I am curious. I am surprised that someone on Geotech with experience with PI has not already raised this point.

Urbs ... Urbs ... lets be clear here ....

1. This is not a conventional PI design ... so you cannot analyse it from a conventional perspective.
2. Ferrite rods have no impact. In fact if this was a ferrite detector .. I have failed.

[dougAEGPF]

[QUOTE=UrbanFox;159957]Aziz, I have seen the waveforms Moodz has presented in earlier posts and which he says are damped. The problem previously seen with this underdamped waveform arises with the influence of certain ground upon the RX signal.

What is this "certain ground" ie What are its EM characteristics and why is it a problem with underdamped waveforms?

dougAEGP

[UrbanFox]

Notice, Ufox is already curious.
Aziz

Aziz, I have seen the waveforms Moodz has presented in earlier posts and which he says are damped.

I see those waveforms as not being damped adequately for certain purposes. The increased amplitude seen with a semi damped ringing waveform is nothing new, and those who have experience with PI design have been aware of this fact for years.

The problem previously seen with this underdamped waveform arises with the influence of certain ground upon the RX signal. This ground influence can be simulated by waving a soft ferrite rod in front of the coil.

Of course I am curious. I am surprised that someone on Geotech with experience with PI has not already raised this point.

[Aziz]

Well I cant just keep saying that it works ... but I can tell you this .... whoever owns this IP .... owns the future of PI design as it appears to bypass ALL previous art. ( might even surpass WBGB ... sorry Aziz .. Ok ... might equal WBGB ).

YAWBGB (yet another WBGB)
TRWBGB (the real WBGB)
TOWBGB (the only WBGB)
WBWBGB (World's best WBGB)
*LOL*
Be prepared to get your own:
WBGB song, cups, vids, art pictures, love letters, etc...
All the Ufoxes, Bushfoxes, PJ's, Rafferty's and all other agents will follow you.
Greedlab will take you to the court.

Notice, Ufox is already curious.
Aziz