a power_full metal locator

[rajesh]

detect

Have a look here -> http://www.joanallen.co.uk/a_detech_...ectors_uk.html

hi qiaozhi thank for sent a link. qiaozhi i built acoil cover for hammerhead coil outer diameter 13.5/13.5 sqare inch can you tell me how many turns give me 320 uh inductance ......rajesh

[rajesh]

detect

No need to be very complicate for to be sensitive.

Is the 8 pins IC a LM358 and the other a 4066? Appears use zener for volt. regulation... seems like a C-Scope model with some variants.

Do you can trace the transmitter circuit inside the coil housing?

Regards

Esteban

hi esteban thanks for reply transmitter ciruit is a very simple bc 547 used here as soon as i will send all component list thanks esteban ........

[rajesh]

detect

Hello , I bet the problem is with the tiny circuit board inside the search-coil and not the windings . There are a lot of circuit tests you can make with just a good ohm meter . You might have a Good Rare VLF Machine that not to many people know about !!.....Keep us informed on your interesting Old Circuit....................Thanks................. ..Eugene52

hi eugene there are simple bc 547 transister no problem thanks ............

[detectoman]

rajesh i quest you., say me please.,.. if this detector only is all metal? or is discriminator? thanks for advance
dman mexico

[rajesh]

metal locator

rajesh i quest you., say me please.,.. if this detector only is all metal? or is discriminator? thanks for advance
dman mexico

hi detectoman this is all metal detector i used this very high sensetive device....

[detectoman]

if you like, pls, send me the circuits tx and rx traces and original components list and ohms of double d coil, thanks
may be, you can repair these put shocket interchangeable in ic 4066 and replace for other 40..s but before check one for one, the transistors
regards
detectoman mexico

[rajesh]

metal detector

if you like, pls, send me the circuits tx and rx traces and original components list and ohms of double d coil, thanks
may be, you can repair these put shocket interchangeable in ic 4066 and replace for other 40..s but before check one for one, the transistors
regards
detectoman mexico

hi detectoman im shortly sending all detail ......rajesh

[detectoman]

ok brodhy rajesh thanks, i await, i think this is simple and good detector for experiments
regards

[rajesh]

metal locator

ok brodhy rajesh thanks, i await, i think this is simple and good detector for experiments
regards

hi detectoman this is very simple and a very good locator for experiment....

[rajesh]

metal locator

this is image

[rajesh]

metal locator

image

[rajesh]

metal locator

hi detectoman tell me if you want more detail...

[Esteban]

Hi Rajesh

Is very simple... Now, your next step will be trace it for us...

Regards

Esteban

[rajesh]

metal locator

Hi Rajesh

Is very simple... Now, your next step will be trace it for us...

Regards

Esteban

yes esteban im ready for next step...

[Esteban]

4016 = 4066

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

Please take better pics with digital camera!

Regards

Esteban