Metal detector with meter discriminating

[ivconic]

Bulgarians at war!

Yo Bulgarians!!! Why are you arguing? Friends,brothers...neighbors!
Nobody want to make money on nobodys account! This is place for hobists and amateurs....everybody welcome here...We should be friends and colaborate....
Take it easy, shake hands and be friends!
Best regards!

[Unregistered]

I am agree whit you!!

[Leto]

Hi Sasho,

About those germanium sfd107.. can't find them..
same story with jfets pn4393
Any substitutions? How critical are this components?

Also can you explain in few words fase and amplitude setup with coil comparator level meter.

[Ultimate_Haze]

to Sasho-bg

Hello,
Sasho I have read the posts from GOSHO that designed NEXUS!
If this your circuit is close to NEXUS,can this circuit make diferance in metal purenes?
Its look like this is one of GOSHO's secrets!
This is my opinion~!
I am just asking?
I see that you are ataked constantly and you get angri from this,but I saw your circuits and I am intersted!
I have spend money for one detector and I am angry,so now I wanna try build somethig!
If this YOUR circuit is close to NEXUS this mean that this is the best to concentrate on!
Can you tell HOW it preform in soil?Can this detector handle whit HOTROCKS?
Thanks for sharing this circuits whit us!
As far I can see you have posten more autors circuits than anyone in this forum!

[sasho-bg]

To mastera
NO COMMENT
You khow what is hobbi?

[Unregistered]

sasho-bg?

Hello,
Very intersting!
Well done,nice job!
Did you invent this or its your tuning on somthing else?
What is d for coil?
Thanks

[Unregistered]

to SAsho

Hi,
Can I use some other diode insted of sfd107?
I cant find this one!
Please avice me.

[sasho-bg]

D for coil -0.27mm or 0.31mm
sfd107,8,9=germanium diode
Coil positioning to minimal level signal without c5.

[Unregistered]

to Sasho-bg

Hello,
Thanks!
I will try this!
Can this baby handle whit so called hotrocks,or you havent chance to check this?
If you have invent this its realy a thing that you can feel proud off!

[Unregistered]

to Sasho-bg

have you thinked for LCD?
I see that there are aveilable it will,be much more easy then searching 0,05-0-0,05 ma scale!
What do you think?
Thanks

[Unregistered]

to SAsho

Hello,
I have found sfd112!
How do you think can I use this?
Will this affect the circuit?
Thanks.

[Sasho-bg]

No. Work well with VCO sound oscillator.

[sasho-bg]

sfd106-sfd112=germanium diod-no problem.
meter 50-250 mikroamper.Adj. with R29.

[Unregistered]

to Sasho-bg

Hello,
Thanks Sasho!
I will try to build this hope it will work as expected!
This will be great.
Thanks

ps.What is this 50-250 scale?
I easy can find 50-0-50 mA!Can I use this?
In your chematic you have marked that scale is +0- 0.05mA????

[Unregistered]

Hello,

Hello,
Sasho.
I am trying to make this PCB,but its look like pin configuration on IC CA3140 is reverced!!+and-????
Am I right?
Please explain!
Thanks