1m x 1m Coils

[nncunew]

Somebody know how do make a 1m x 1m coils.

How many turns, Which wire gauge ????

What damper resistor ??

Thank,

nncunew@yahoo.com

[nncunew]

No body

No body has make a coil of 1m X 1m.

I need learn about that

??????????????????

nncunew@yahoo.con

[kt315]

follow it

[nncunew]

KT315 (NPN)

Ok, thank

But, what wire gauge and how many turns ???

nncunew@yahoo.com

[quink_]

Here you see 1m x 1m coils:

http://www.metalldetektor.de/image/piii_neu1.jpg

http://www.metalldetektor.de/image/piii_neu2.jpg

http://www.metaldetectors.de/img/acc...e_frame_kl.jpg

[nncunew]

No much information

There's no much information.

I need make a 1mx1m and the information about is more small.

I need , the wire gauge and others especifications, for ejample the damper resistor


Thank

[kt315]

I took a multifilament wire because it must be some elastic. a diameter 'of copper' must be not less than 1,8-2 mm.

[nncunew]

And,

How many turns ????

Thank,

nncunew@yahoo.com

[Carl-NC]

Number of turns & damping resistor depends on the PI you're building it for. I believe the 1m x 1m coil I made ended up close to 500uH with 8 turns.

- Carl

[nncunew]

OK, Carl

Carl,

For ejemple, in tha HH PI what wire gauge you recomend ? and what damper resistor?

You have some method for calculate the apropiate damper resistor ? or some practical method ?

I am making TWIN LOOP, but with only one coil and with a MOSFET (not IRF 740, another) but with 8" coils does not give good results. In the output of pre (709) I see a noise. I want probe with other coils, 1mX1m. With teh actual coil only get large objects (10cmx10cm) at about 30 cm from the coil. How you can see there's something wrong.

Thank,

nncunew@yahoo.com

[Carl-NC]

I think I used 24AWG or something like that. Damping resistor is found by looking at decay settling with an oscope. If you have no oscope, then adjust the damping R until you get max sensitivity to a given target.

- Carl

[nncunew]

very good, Carl

I think that with a potentiometer of 1k of nicron i can obtein the best value using a metal object to probe.

How you construct your coils square o radial ????

Resuming:

24 awg
8 turns

1mx1m if square or 1m diameter if radial

is ok ???

Tahnk

nncunew@yahoo.com

[Carl-NC]

Not sure I would use a pot for damping, instantaneous current might be a tad high for it. If you do use a pot to find an optimal value, I would then replace it with a fixed resistor.

I built a square coil. Try it with those parameters, see what you get.

- Carl