Interesting video on coil machine

[Alexismex]

good video when you can see some machinery for make the coil good for us and for Ivconic to make many coils:

http://www.youtube.com/watch?v=izZBq5r5DEs&feature=player_embedded#t=258

[Ultimate_Haze]

Interesting indeed
I am not familiar with ACE250.But remember that saw schematic and PCB somewhere.Will search for this one.
Have you notice that they wind both TX and RX with 4 outputs?Why?Maybe device design demand this.Also the voice say they attach coil to electronics and switch on.This calibrate coil to electronic!??!?!?Can someone explain this please.They use some electronic part for this?

[Aiko]

Here it is : http://metadec.narod.ru/sch_md.htm

[WM6]

This calibrate coil to electronic!??!?!?Can someone explain this please.They use some electronic part for this?

Probably they use calibrated signal generator on TX side (with sweep if they use scope on RX) and some sort of Voltage to Audio converter on RX (depended of MD working frequency if it is low even not need to be converted).

[Ultimate_Haze]

Thanks.I will study this Aiko

WM6 the coil is sealed at this time and tested to suit exact specifications /inductance and resistance/.The words were "they temporary connect coil to electronic and switch on.This calibrate coil to electronic!
For both cases Pinpointer and ACE250.So they use some kind of trick in this moment.Later coil is tested with various samples/iron,silver.../

[WM6]

... time and tested to suit exact specifications /inductance and resistance/.The words were "they temporary connect coil to electronic and switch on.This calibrate coil to electronic!
For both cases Pinpointer and ACE250.So they use some kind of trick in this moment.Later coil is tested with various samples/iron,silver.../

I think that there is no need for some trick. They can use some stages of Metal Detector (as usually we can do) or electronic instruments. Usualy in production calibrated electronic instruments are used. So "electronic" mean "electronic instruments" in this case primarily signal generator.

[simonbaker]

Excellent video, thanks.

Interesting how they wind onto form that is placed directly into search head.

I tried similar idea, but some problems with materials.

http://www.geotech1.com/forums/showpost.php?p=98902&postcount=129

However, probably worth trying again.

-SB

[Alexismex]

Yes, sometimes with the view of video you can catch some good trick and
pro technique and these can be adapted to our use.
Alexis.