How does a PI Detector work?

[ulix]

Hi,
is there someone out there which can me give some invormations how a pi metal detector does work, maybe to understand and later to build an own. I'm happy if there is someone how can say me which book to read or other files. If the document is with pictures, its perfect.
thanks
uli

[mikebg]

Hi Ulix,
The WEBcontains a vast amount of information for your needs. I can't show you what to read and how to design PI detectors without
"inVormations" what is your level of
knowledge in the field of electricity and electronics, do you like math and
explanations with formulas, can you do SPICE simulation of circuits. Send me an email
if you preferred not to give information about themselves to all in this forum.
Yours Mike

[kt315]

google Lahr How metal detectors work
it is a great work of the great man.

[ulix]

At first i'm searching informations to explain my metal detector for school in a presentation. I'm searching easy and middle hard informations, no medium informations, because this i can't understand.

@kt315:
I know this information of "How Metal Detectors Work" but it's too simple, I hoped that anyone can give me some scripts with pictures....

[WM6]

I'm searching easy and middle hard informations, no medium informations, because this i can't understand.

..

You can understand middle hard informations, but can't understand medium informations?

So medium informations are harder than middle hard informations?

I can't understand your approach.

[ulix]

hi,
thanks for your reply. I meant no hard informations, maximum medium infromations. ( It was because of my german-english translation, I'm so sorry )
thank you!

[WM6]

Basic knowledge, as suggest you kt315:

http://www.gi.alaska.edu/~jesse/treasure/misc/howdetector.html

Illustrated demo:

http://www.kellycodetectors.com/how-...ctors-work.htm

Animated demo:

http://micro.magnet.fsu.edu/electromag/java/detector/

another animated demo:

http://www.thomasathomas.com/How_Met...ctors_Work.htm

How to build simple metal detector:

http://www.easytreasure.co.uk/bfo.htm

[ulix]

Hi,
thanks for the links.
Can you give me more? I'm searching everything you have.
thank you!

[kt315]

can give you more... you sharply need learn OLDIE TOPICS at Foster's forum. it is still alive... do not wait gurus will give you usefull info here. only your sufferance, elaboration and particularity in the learning will give you real cognition in PI Technology.
http://www.findmall.com/list.php?34

PS. learn learn and LEARN IT. GNAW THE BASALT!

[grungymike]

PI school

I started the same learning curvea few months ago. If you go over to the projects page of this website, you'll find a bunch of stuff. In particular look for Carl Moreland's article on the Hammerhead I detector, bbsailors article on fast coil design, and Reg Sniff's article on PI theory. These guys cut years off of my learning curve...

And now I'm up to my eyeballs building a Hammerhead. Sure beats buying something from a store with no idea how it works!

gm

[grungymike]

errata...

My mistake, Reg Siff's article on PI theory is on www.nuggetshooter.com,
or just google reg sniff.

I've been doing too much reading the last few weeks, it's starting to blur a little...

gm