Electronic dowsing rod

[WM6]

BC107/157 are very old είναι για απόσυρση !!!!
instead of those BC547/557 are ok

Yes, epitopios, thank you to remark. There are some more possibilities of replacement too.

Did this device really work ?
It how detect treasure ?!!!

Yes, device really work (if you build it correctly). To detect treasure someone must have something like "born to be dowser". All de-scripted yet in this thread, if you interesting, please, read again. I haven't additional comments regarding this matter.

[Esteban]

do you mean 80mhz? because 80khz with a 200pf cap will give only a very small tuning range, and wound on air it will need an awful amount of turns...

Supossed you use for to tune it 2 capacitors, one of 4n7 and other of 3n9 (CX, THE BOTH VALUES ONLY AS EXAMPLE). Sometimes for to tune exactly you need some pF, sometimes less 200 pF, so this is a factor of fine adjustment. Maybe is not necessary.

For LX maybe you need 500 turns of wire 0.15 mm in small form. But you must calculated it.

[Esteban]

80Mhz is so high frequeny.
200pf needs 20mH to tune at 80Khz..... and 20nH to tune at 80Mhz.
Nothing is good

Geo, see CX + pF. Of course, you don't need mH is you use higher cap. for CX. pF is fine adjustment factor.

[Esteban]

If in this "device" isn't movable part, is a pistol, not a dowsing rod. Now, you have your pistol... do you wish to build it?... The only sure very good workable part is the beeper generator... also very useful for classic MD.

[Fred]

Supossed you use for to tune it 2 capacitors, one of 4n7 and other of 3n9 (CX, THE BOTH VALUES ONLY AS EXAMPLE)

I see.And i like you example

[Esteban]

I see.And i like you example

Very simple: you have capacitors 4.6... 4.8... nF, 3.8... 4.0 nF... 4.1 nF... never is exactly. I use in example because in a round coil 16 cm diameter 30 turns wire 0.35 resonates at such frequency with 4n7 and 3n9 + pF. Everybody knows that all capacitors marked 4n7 hasn't 4n7... 3n9 hasn't 3n9... just approximations... But if with these capacitors you obtain less than 80 Khz, then remove turns of wire. Of course, all is patience.

[Morgan]

El. Rod

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]

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.

[J_Player]

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-Axial-Electrolytic-Capacitors-Audio-20-PCS_W0QQitemZ170438084266QQcmdZViewItemQQimsxq20100128?IMSfp=TL100128171002r17648#shId

Best wishes,
J_P

[Morgan]

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-Axial-Electrolytic-Capacitors-Audio-20-PCS_W0QQitemZ170438084266QQcmdZViewItemQQimsxq20100128?IMSfp=TL100128171002r17648#shId

Best wishes,
J_P

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

[Morgan]

Cap. 0.1 uF

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]

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:

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

Best wishes,
J_P

[Esteban]

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.

[Fred]

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-Axial-Electrolytic-Capacitors-Audio-20-PCS_W0QQitemZ170438084266QQcmdZViewItemQQimsxq20100128?IMSfp=TL100128171002r17648#shId

Best wishes,
J_P

They really don´t look like electrolytics

[J_Player]

They really don´t look like electrolytics

What do they look like?

Best wishes,
J_P