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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > Modifications, Do It Yourself & Repairs (Moderators: Eugene52, xavier, GoldDigger1950) >

XR71 Operation Help

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tantal

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #740 on: August 23, 2012, 02:57:50 am »

Thank you for the answer .. schematic PCB is accurately checked by Electrical scheme ... worth it to do this project.

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xavier

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #741 on: August 23, 2012, 01:15:41 pm »

Well like I said if you know how to work with SMT then my guess would be yes but if you do not have that experience, rather stay away from it. It is a totally different ball game when you are working with SMT.

Have fun
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tantal

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #742 on: September 01, 2012, 02:59:58 pm »

The results for 2 cm coin and Coke 0.33L
sThe results for 2 cm coin and Coke 0.33L
probe of 30cm diameter. Huh?

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xavier

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #743 on: September 02, 2012, 06:18:58 am »

What?

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tantal

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #744 on: September 02, 2012, 09:38:47 am »

The purpose of this detector is only for finding large gold nuggets
. or only for large items. Huh?

But he is not sensitive to the gold
Who are your results.

Posted on: September 02, 2012, 09:30:59 AM

R23, p24, R25, R26 must be 0.1% or 1% in the list of parts is 1% schematic is 0.1%

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xavier

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #745 on: September 02, 2012, 12:50:01 pm »

A PI detector can find any metallic object but if you want to find small nuggets you will need a small coil it's like if you were going to build a house you would use a truck to carry the bricks and not a bicycle but if you were a doctor you would use a small fast car. Same with detecting you have to have the right tools for the job.

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #746 on: September 03, 2012, 03:31:03 am »

Thank you very much for the answer ..
Table depth of this detector, can be set here for probe 1h1 and 42cm diameter

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xavier

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #747 on: September 03, 2012, 11:31:39 am »

A 42cm coil will not work to find small nuggets you will need a much smaller coil about 15cm mind you that on my PI I have a 28cm coil and I find very small pieces of iron but then it not gold and the eddy currents are a lot stronger.

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #748 on: September 05, 2012, 02:38:19 am »

This detector works very similar to the Minipulse3 that I built , my project to date works best with a 6" coil using ordinary alarm cable striped and using synthetic graphite as the shield but still need to experiment further, any tips would be greatfully received.

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tantal

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	Re: DELTA PULSE / SNIFFER XR71 PULSE INDUCTION METAL DETECTOR « Reply #749 on: September 06, 2012, 03:06:08 am »

Havier
I did this project, but I do not have good results obviously has secret components such as integrated circuits and operational amplifiers.
Koj circuits are best suited for Delta Pulse
What is better than UA556, TL062, 4538
4066, LF357N that sign???
It is not possible ... if all use the same PCB as El.shema same parts and values, then all we will have good results.
I made a few types of inductors results weak. Huh?

The secret is in the components but who are they???
COMPONENTS BY YOU???

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