fisher 2

Building stuff for search head is Komatex

N°4

1.Circle310mm. two numbers

2.

3.

4.

band 2mm. / 8mm. / SSsrrt— O ■ band 2mm. / 8mm. / 90sm^-band 2mm. /1,5sm. /1 m>^

O

_ 165mm.

-    275mm.

—    310mm.

glued onto the circle Ns1

When bands are glued onto, a smali cable must be connected (GND), and then inner side must be spreaded with grafitte.

Then transmit and receive coils must be fitted and glued with silicone glye

begining

end

Search head nuiiing is performed movement of nuiiing ioop

beginning of transmit coil is connected to the generator ending is conected to the nuiiing ioop

begining of receive coii is connected to pin 3 (first OpAmp) via 58 oms resistor. KpanT e Ha Ending is connected to the GND in main Circuit! Not to the GND here! Cable to the main PCB is 4 wired (separately shielded)