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Offline delldude
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« Reply #50 on: October 10, 2009, 09:32:46 pm »
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 [wise   what would be your price for a good P I as i am only limited to the beach now days for the parks it takes a while to get donw to dig  take care   delldude

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« Reply #51 on: October 23, 2009, 12:48:58 am »
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hello Eugene.I was wondering if you have started to build these yet?I would like to talk with you more about it if i could.thank you for your time
                                                                                                                                                                                   Charles

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Offline raya
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« Reply #52 on: October 26, 2009, 05:24:25 am »
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helo from Lebanon  Detecting
My Delta is working very good
coil d=34 cm wire 0.4 mm 18 turns R=3.9 Ohms waw
a little R=10 Ohm between NE556 and IRF740 is good
in original schemas no connection between pins 2-6 NE555 in PCB
Good luck Friends see u later


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Offline apocalypto
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« Reply #53 on: October 30, 2009, 07:31:44 am »
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please can Eugene give us the partlist with reference and equivalence, i'm from tunisia and many electronique components are not available.
Are the PCB signle side is exact?

thank you.

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Offline Eugene52Topic starter
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« Reply #54 on: October 30, 2009, 10:11:13 am »
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Quote:Posted by apocalypto
please can Eugene give us the partlist with reference and equivalence, i'm from tunisia and many electronique components are not available.
Are the PCB signle side is exact?

thank you.

Hello Apocalypto . A lot of information is already posted here . Have you searched the Thunting forum here "thoroughly" ? I will have some spare time this week-end and will post some substitutes and a parts list . Unless someone beats me to it !!
Best Regards .......Eugene


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Offline electrosoft
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« Reply #55 on: October 30, 2009, 01:07:42 pm »
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Quote:Posted by apocalypto
please can Eugene give us the partlist with reference and equivalence, i'm from tunisia and many electronique components are not available.
Are the PCB signle side is exact?

thank you.


hi apocalypto all components are available in tunisia you can post here for more help

{alt}

for signle side PCB you can use attached pdf files

@Eugene i need same help for building 40cm coil  with network computer cable

with 4 spire like posted in a turkish forum i detect coin at only 15cm  Thumbs Down

br!
 

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Offline apocalypto
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« Reply #56 on: November 02, 2009, 08:45:02 am »
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Thank you ELECTROSOFT
i'm searching for sniffer x71 for big target for deep = 2 meters, (example a square coil 1m x 1m)
thank's to all

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Offline Eugene52Topic starter
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« Reply #57 on: November 02, 2009, 11:19:23 am »
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Quote:Posted by electrosoft
hi apocalypto all components are available in tunisia you can post here for more help

{alt}

for signle side PCB you can use attached pdf files

@Eugene i need same help for building 40cm coil  with network computer cable

with 4 spire like posted in a turkish forum i detect coin at only 15cm  Thumbs Down

br!
 


Hello Electrosoft and Apocalypto . When you build a PI Circuit , first build a standard basic mono search coil !! Start with a 8 inch diameter , use 0.38 mm wire @ 28 turns that should give you close to 400 uh [micro-henry] inductance and around 2.8 ohms dc resistance . Then you can Test to see if your PI circuit is working properly !! Small euro coin should be detected easily at 12 inches [30.5 cm] in the ground . Then you can experiment with building larger searrch coils . Make sure your circuit is working perfect first , then play with much bigger coils . Always Remember , Do not go below 2.0 ohms DC resistance on any size search coil or you will damage Q1 IRF 740 on Delta Pulse .
Regards......Eugene

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Offline apocalypto
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« Reply #58 on: November 03, 2009, 02:50:55 am »
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thank you EUGEN
In the pcb one side published by ELECTROSOFT i remark that the RESET button and the Vu meter is not found
thank you.

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Offline hesamavr
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« Reply #59 on: November 03, 2009, 06:15:17 am »
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Dear Eugene52

You posted these two schematics of XR-71.
They have some differences in some parts and values. which schematic is better and correct ?

Best Regards

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