Metal detector with meter discriminating

6 wires+shields cable

[Ultimate_Haze]

Hi

Receiver and transmitter coils fitted with Faraday screens. Trans. coil is only one coil with four outputs.Res. coil is with two outputs.

Hi,
Sasho.
I cant understand?
How you conect this coil?I see two coils L1 TX and L2 RX this are 4 wires and 2 for shields.
But how do you conect those?If you can please post simple picture?
I see on schematic that there are two 25 turns one 70 and one 120 turns.
Thanks

[Duncan]

PCB?



Many thanks Sasho, that was most useful information.
Do you have a PCB layout/pattern for this detector?

Best wishes

Duncan

Receiver and transmitter coils fitted with Faraday screens. Trans. coil is only one coil with four outputs.Res. coil is with two outputs.

[Duncan]

PCB?



Hello Sasho,
Please can you tell me:-
Do you have a PCB layout/pattern for this detector?
Are any (or all) of the coils fitted with Faraday screens?

Best wishes

Duncan

Hello,
Can you please tell a little bit more about this coil?How should I conect it with the detector?
How you make TX coil with 3 outputs?
Thanks

to SASHO

Hi,
SASHO!
Thanks.Now you make it clear!

Select the value of the resistense of R42 bey trimmer so,that yon can have +9V on the exit on the stabilizer.Set the neherest pesistor nominal.

to SASHO

Hello,
I mean isnt R42 resistor?What is it's value,because its not marked on the schematic!
Tks!

R42-adj.+9v with trimmer 22k.

?

Yes,
Sasho please explain R42?
Thanks

[Ultimate_Haze]

to SASHO

Thanks!
And what about R42?I should chouse right range to achive 9V according to what have I put together or what?
I have trying to make PCB for this circuit whit sprint layout 4 ,because I cant find to download sprint layout 5!!!
And almost finish,but still a lot of work on this!!
I cant wait to test the finished machine!!!
Can you tell me about the coil:
This is OO coil?
And as far I can see there is no switches ot this circuit,except S1 on/off??
Thats good I hate switches.

The potentiomters are Lin.
LM358D-no problem.

[Ultimate_Haze]

to SASHO

Hello,
Can I use LM358D insted of Im358?
Sorry for the stupid question,but you will HElp me this way!
Thanks

to SASHO-bg

And the potentiomters are?Lin. or Log.?