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  • Esteban
    replied
    Rajesh

    Do you can make better pics with digital camera? Do you can trace the transmitter schematic?

    Regards

    Esteban

    Leave a comment:


  • Esteban
    replied
    Originally posted by Max View Post
    Hi Rajesh,
    I suppose it's an off-resonance MD. I don't know what do you mean for medium sized object so what about coin detection... say a 23 or 25mm diameter coin (copper , silver or steel etc you can try) ? What's detection in air and in average soil ?

    I ask you cause I know (very old) designs that were capable of far detection on the air on cigarette box size things but failed on soil cause of many false signals. I was similar, foil wrapped coils and some digital ic.

    Kind regards,
    Max
    Max, yo dissapear of the forum for some months. What happens... if you can tell us...

    Leave a comment:


  • Max
    replied
    Originally posted by rajesh View Post
    hi detecto man i found many object at highly deep it's worked good
    Hi Rajesh,
    I suppose it's an off-resonance MD. I don't know what do you mean for medium sized object so what about coin detection... say a 23 or 25mm diameter coin (copper , silver or steel etc you can try) ? What's detection in air and in average soil ?

    I ask you cause I know (very old) designs that were capable of far detection on the air on cigarette box size things but failed on soil cause of many false signals. I was similar, foil wrapped coils and some digital ic.

    Kind regards,
    Max

    Leave a comment:


  • rajesh
    replied
    m

    Originally posted by detectoman View Post
    rajesh: if original coil is loss outdoors, i think these md should work too whit same coil of tsglight of ivconic, this is in other tread forum of here, or try whit simple double 0 coils, tx lees turns rx one little most turns, read here, is easy, but if circuit is wrong, this is other historie, rajesh, what happen whit original coil? eat the rats?
    hi detecto man i found many object at highly deep it's worked good

    Leave a comment:


  • rajesh
    replied
    metal locator

    Originally posted by Qiaozhi View Post
    Hi Rajesh,

    You already have everything you need to back-engineer this design. It's quite a simple design and should not take you very long.
    yes you are right

    Leave a comment:


  • detectoman
    replied
    rajesh: if original coil is loss outdoors, i think these md should work too whit same coil of tsglight of ivconic, this is in other tread forum of here, or try whit simple double 0 coils, tx lees turns rx one little most turns, read here, is easy, but if circuit is wrong, this is other historie, rajesh, what happen whit original coil? eat the rats?

    Leave a comment:


  • Qiaozhi
    replied
    Originally posted by rajesh View Post
    hi detectoman you see these winding is not orignal winding. this made by me orignal winding was very thin wire strong glued with araldite and wraped alluminium foil when i remooved coil cover wire has broken with circuit last year ........ actually i dont knowe how do this circuit work i need a schematic..
    Hi Rajesh,

    You already have everything you need to back-engineer this design. It's quite a simple design and should not take you very long.

    Leave a comment:


  • rajesh
    replied
    metal locator

    Originally posted by detectoman View Post
    brother rajesk thanks for your big sforces, i think your coil only is move in the position central null, i see these not was glued, then these go move, whit shocks, and is out of right calibrations, other you can repair these if rain oxide and croos in short circuit, due to oxidation, only put others wires same turns same diameter and move the central part to put normal null function, is easy, after fixe whit little cap of wood glue, for posterior adjust, ok you can repair easy these md
    best whises and thanks of new
    detectoman
    hi detectoman you see these winding is not orignal winding. this made by me orignal winding was very thin wire strong glued with araldite and wraped alluminium foil when i remooved coil cover wire has broken with circuit last year ........ actually i dont knowe how do this circuit work i need a schematic..

    Leave a comment:


  • detectoman
    replied
    brother rajesk thanks for your big sforces, i think your coil only is move in the position central null, i see these not was glued, then these go move, whit shocks, and is out of right calibrations, other you can repair these if rain oxide and croos in short circuit, due to oxidation, only put others wires same turns same diameter and move the central part to put normal null function, is easy, after fixe whit little cap of wood glue, for posterior adjust, ok you can repair easy these md
    best whises and thanks of new
    detectoman

    Leave a comment:


  • rajesh
    replied
    metal locator

    Originally posted by detectoman View Post
    rajesh: only the ohms of coils disconect whit 200's ohms multimeter scale
    un fuerte abrazo a usted from mexico
    hi detectoman coil winding has been damage i can not check resistance there are near about 36awg 7 inch dia meter tx 50 turn and rx 80 turn if you want any help wellcom......

    Leave a comment:


  • detectoman
    replied
    rajesh: only the ohms of coils disconect whit 200's ohms multimeter scale
    un fuerte abrazo a usted from mexico

    Leave a comment:


  • detectoman
    replied
    rajesh: i see too, the first page, thanks for you great sforces, i think it is very clear, too need esteban conclusions help, then i go to build these, then i inform if have advances on future experimentations
    very much thanks brodhy rajesh
    atentamente detectoman mexico

    Leave a comment:


  • detectoman
    replied
    very thanks brother rajesh, i think esteban can make the schematics conclusions, too think esteban know the earlier circuit amplifier whit big ics, and amplifier ic, and can give us the tips
    i see you old circuit can be been repair, is very simple, members here can give indications
    best regards

    Leave a comment:


  • rajesh
    replied
    metal locator

    Originally posted by Esteban View Post
    4016 = 4066

    Looks similar as C-scope minidetector with few vaiants...

    Please take better pics with digital camera!

    Regards

    Esteban
    hi esteban i shooted this picture my mobile nokia 5200 if you need more clearance i will be send more image dont worry there are ic 4016bcn ( po136sd)

    Leave a comment:


  • Esteban
    replied
    4016 = 4066

    Looks similar as C-scope minidetector with few vaiants...

    Please take better pics with digital camera!

    Regards

    Esteban

    Leave a comment:

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