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Offline mohammad ali12341234
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« Reply #700 on: May 14, 2015, 03:34:20 am »
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سلام من از ایران هستم
ونقشه کامل پی دی اف این مجموعه رو نیاز دارم  ممکنه در مورد برد این دستگاه و لوپ هم توضیحاتی بفرمایید

Posted on: May 14, 2015, 03:27:08 am
I want circuit diagram  xr71

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Offline xavier
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« Reply #701 on: May 14, 2015, 08:47:30 am »
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I want doesn't get. Introduce yourself first please.

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So many questions so little time

Offline mohammad ali12341234
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« Reply #702 on: May 14, 2015, 10:39:44 am »
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I am from Iran
Full maps PDF I need this set up may also explain the range of the device and loop Here

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I am from Iran
Full maps PDF I need this set up may also explain the range of the device and loop Here

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Posted on: May 14, 2015, 10:33:37 am
send me bilan_qom.komtell@yahoo.com

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« Reply #703 on: October 09, 2015, 03:02:34 pm »
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Hello guys .. this is first experience with Delta Pulse\sniffer xr71 .. Finally I finished built it after about 1 month .. now the circuit working very good  Wink and stability without heat .. I posted the schematic  that i accomplished .. this is some of  information and results:
 - i am only replaced tl062 with tl082
 - And all values are same in the schematic like: ( R5 = 2.2K ohm - R6 = 680 ohm - C30 = 10000 uf - R23, R24, R25, R26 = 4.7K ohm 1%)
- coil : 40cm \ 24tur \ 0.55mm \
The results of detecting is:  Cheesy
- coin  at  30-40 cm
- Stainless Steel Cup  at  50-60 cm
- Stainless Steel  disk  at  90-110 cm

sorry for my bad English ..


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« Last Edit: October 09, 2015, 03:14:37 pm by saker »
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« Reply #704 on: October 21, 2015, 05:40:43 pm »
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hallo .. plz help me .. delta pulse is very good for iron but why it is not Sensitive for gold?
is there any Modify to work more Sensitivty for it ?


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Offline NE555
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« Reply #705 on: October 22, 2015, 08:52:30 am »
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Quote:Posted by saker
hallo .. plz help me .. delta pulse is very good for iron but why it is not Sensitive for gold?
is there any Modify to work more Sensitivty for it ?



not, in DP any modify is yet impossible. DP is too sensitive device with his 500us PULSE WIDTH max. limit is reached. you can only move PULSE WIDTH to value more than 500us, but you will get problem with stability just cause existing ground back influence effect. if you increase a size of coil you get more depth on big targets but less depth on small targets.
this relation is un-linear.


Posted on: October 22, 2015, 08:28:59 am
standart coil for DP - 1 x 1 meter square coil.



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« Reply #706 on: October 22, 2015, 03:29:33 pm »
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thank you NE555 for your Interest .. i will test all Possibilities to get the best result .  Smiley

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« Reply #707 on: November 16, 2015, 01:16:47 am »
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Hi readers
In first excuse me about my bad English

I make delta pulse.but its dept is very low.its dept is about  half of the others.
For example with a 60 cm dia coil. 430micro Henry.   2.5ohm 
It detect a great place of iron (50cm dial late) in 1meter.
If some body know my problem. Please help me
Thanks

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« Reply #708 on: April 06, 2016, 04:26:32 pm »
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plese help me What is the beast value resistors R5 and R6 to get a more sensitivity for gold? Is there any solution for it?
my coil is 23 tur - 40 cm

help help .... Cry

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Offline NE555
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« Reply #709 on: April 09, 2016, 09:18:59 am »
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where you had read you have to retune R5 R6 for 'best gold depth'?  from whom? give name. your romantics day dreams?

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« Last Edit: April 09, 2016, 09:19:33 am by NE555 »
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