Electronic dowsing rod

[WM6]

Here you are real, complete, easy to build and working schematic. No empty block diagram.

Schematic represent kombination of (rost free) steel U shaped dowsing rod with electronic sensing amplification tuned on target resonating frequency. Dovsind rod data: rod (steel wire) diameter 4.5mm, lenght 45cm, distance between U shapped rods 45mm. Ferrite rod antenna (F) have to be fixed (glued) at 4,5 x inner rod distance from both rod junction (at about 20cm). Coil is tunable to resonate on different target (have to be tested on individual final construction). It is suitable to pistol forming construction. L1 = 180 windings Copper enameled wire 0.2mm on plastic tube inner diameter 5mm.

[Esteban]

Originally Posted by WM6

Here you are real easy to build and working schematic. No block diagram.

Schematic represent kombination of (rost free) steel U shaped dowsing rod with electronic sensing amplification. Dovsind rod data: rod (steel wire) diameter 4.5mm, lenght 45cm distance between U shapped rods 45mm. Ferrite rod antenna (F) have to be fixed (glued) at 4,5 inner rod distance from both rod junction (at about 20cm). Coil is tunable to different target (have to be tested on final construction). It is suitable to pistol forming construction. L1 = 180 windings Copper enameled wire 0.2mm on plastic tube inner diameter 5mm.

Schematic can work. But small difference can't be sense. You can use beeper gen. for more sensibility. Another solution can be tune via collector (coil and capacitor) "frequency" of metals. 68 nF in series with 1K5 was used for tone for common speaker. These both components doesn't affects performance of the buzzer. Speaker is not very useable here due magnetic generation during detection, can be in opposition to "signal". Also common speaker can be produce a kind of microphonic effect in the circuit.

[WM6]

Originally Posted by Esteban

Speaker is not very useable here due magnetic generation during detection, can be in opposition to "signal". Also common speaker can be produce a kind of microphonic effect in the circuit.

Exactly, but as you can see I suggested piezo-ceramic buzzer not EM dinamic speaker, which can produce inductive feedback microphony.

[Esteban]

Originally Posted by WM6

Exactly, but as you can see I suggested piezo-ceramic buzzer not EM dinamic speaker, which can produce feedback microphony.

I left the both resistor and capacitor if somebody decide to use speaker, but if somebody use speaker, then, this speaker must be out the pistol box, for example, in the waist of the person. With piezo also remain small microphonic feedback, so this must in the end of pistol.

[Esteban]

Tune in collector suggestion:

[Esteban]

Regarding your sketch, is not a dowsing rod. Is a pistol with antenna in "U".

[Fred]

Originally Posted by Esteban

Tune in collector suggestion:

What frequency band would you tune the LC circuit?

[Morgan]

Originally Posted by WM6

Here you are real, complete, easy to build and working schematic. No empty block diagram.

Schematic represent kombination of (rost free) steel U shaped dowsing rod with electronic sensing amplification tuned on target resonating frequency. Dovsind rod data: rod (steel wire) diameter 4.5mm, lenght 45cm, distance between U shapped rods 45mm. Ferrite rod antenna (F) have to be fixed (glued) at 4,5 x inner rod distance from both rod junction (at about 20cm). Coil is tunable to resonate on different target (have to be tested on individual final construction). It is suitable to pistol forming construction. L1 = 180 windings Copper enameled wire 0.2mm on plastic tube inner diameter 5mm.

Hello

Are you sure C2 is 0.1 uF electrolitic ? In my country not exist this value ,yes if ceramic capacitor...

[Qiaozhi]

Originally Posted by Morgan

Hello

Are you sure C2 is 0.1 uF electrolitic ? In my country not exist this value ,yes if ceramic capacitor...

Yes, there is such a thing as a 0.1uF electrolytic capacitor, at least there is in tantalum format. I have some at home.
However, I cannot see why it would need to be a polarized capacitor. Simply replace it with a 100nF cap.

[Morgan]

Originally Posted by Qiaozhi

Yes, there is such a thing as a 0.1uF electrolytic capacitor, at least there is in tantalum format. I have some at home.
However, I cannot see why it would need to be a polarized capacitor. Simply replace it with a 100nF cap.

Thanks for advice.
Very soon i will try to build this simple LRL.
Its very strange that Esteban not know this circuit...

[J_Player]

Originally Posted by Morgan

Thanks for advice.
Very soon i will try to build this simple LRL.
Its very strange that Esteban not know this circuit...

Hi Morgan,
It seems to me Esteban knows a lot about this circuit from his experience with the circuits he has built. Look at what he says about it:

Originally Posted by Esteban

...The only sure very good workable part is the beeper generator... also very useful for classic MD.

Best wishes,
J_P

[Esteban]

Originally Posted by Morgan

Thanks for advice.
Very soon i will try to build this simple LRL.
Its very strange that Esteban not know this circuit...

This is a simple directly amplificative stages. Nothing special. I know similars.

[WM6]

Originally Posted by Qiaozhi

However, I cannot see why it would need to be a polarized capacitor. Simply replace it with a 100nF cap.

Agree. C2 isn't electrolytic.

[detectoman]

wm6 semms how max clone
isnt possible wm6 in very less time whit treadhs is guru" then he is max
hello ,maxxxxxxxxxxxxxxxx you be continued with sceptic jokes

[WM6]

Originally Posted by detectoman

wm6 semms how max clone
isnt possible wm6 in very less time whit treadhs is guru" then he is max
hello ,maxxxxxxxxxxxxxxxx you be continued with sceptic jokes

How did you guess?

Yes, I am maXXX and you are Carmen Electra.

[Morgan]

Originally Posted by detectoman

wm6 semms how max clone
isnt possible wm6 in very less time whit treadhs is guru" then he is max
hello ,maxxxxxxxxxxxxxxxx you be continued with sceptic jokes

He is not Max.

Max is very busy,in the circus. This you can see in the photo,he is among other clouns...

[Morgan]

Originally Posted by detectoman

wm6 semms how max clone
isnt possible wm6 in very less time whit treadhs is guru" then he is max
hello ,maxxxxxxxxxxxxxxxx you be continued with sceptic jokes

Where is Max ?

The answer can be hiden in this picture...

[J_Player]

Originally Posted by Morgan

Hello

Are you sure C2 is 0.1 uF electrolitic ? In my country not exist this value ,yes if ceramic capacitor...

HiMorgan,
If you want to buy 0.1uF electrolytic capacitors, you can get them here with free shipping to Portugal:
http://cgi.ebay.co.uk/0.1uF-630V-Axi...002r17648#shId

Best wishes,
J_P

[Morgan]

Originally Posted by J_Player

HiMorgan,
If you want to buy 0.1uF electrolytic capacitors, you can get them here with free shipping to Portugal:
http://cgi.ebay.co.uk/0.1uF-630V-Axi...002r17648#shId

Best wishes,
J_P

Thanks, maybe i build this device,it seems easy,probably not work,but i´m curious...

[Fred]

Originally Posted by J_Player

HiMorgan,
If you want to buy 0.1uF electrolytic capacitors, you can get them here with free shipping to Portugal:
http://cgi.ebay.co.uk/0.1uF-630V-Axi...002r17648#shId

Best wishes,
J_P

They really don´t look like electrolytics

[J_Player]

Originally Posted by Fred

They really don´t look like electrolytics

What do they look like?

Best wishes,
J_P

[Qiaozhi]

Here's one I found in my capacitor box ->

[Fred]

Originally Posted by J_Player

What do they look like?

Best wishes,
J_P

They look like polypropylene film capacitors, but i can be wrong.