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Offline xavier
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« Reply #40 on: November 20, 2010, 03:00:13 pm »
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freedan3d

You don't say what ring Gold, Silver? how big and how heavy?   

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So many questions so little time

Offline freedan3d
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pulse 2
« Reply #41 on: November 21, 2010, 04:06:24 am »
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Hi xavier Waveing
And tanks for your reply
Its my white gold ring.platinum name in Iran is white gold.
White gold in Iran is very popular same as gold. Sad
It size is 25mm*20mm and about 5g

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« Last Edit: November 21, 2010, 04:13:40 am by freedan3d »
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Offline xavier
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« Reply #42 on: November 21, 2010, 05:02:10 am »
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Hi Freedan3d

DBP2010 will detect that at over 300mm in air mind you I found that I need to replace the coaxial cable that I used once that is done I will be able to tell you the out come.

Regards Xavier

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Offline danny475
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« Reply #43 on: December 01, 2010, 01:06:24 pm »
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hi Xavier
can you plese tell me what is the best data for 25cm serch coil for delta pulse
how many turns?
thank you for your reply
danny

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Offline xavier
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« Reply #44 on: December 01, 2010, 02:23:22 pm »
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Hi Danny

if you want to make a coil 250mm you will probably have to change some of the components as that machine was designed for a large coil not a small coil if you make a small coil with the same resistance your inductance will go way up and will hinder the performance of the machine I have not build the Delta pulse so I can't really help you there.

Regards Xavier

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Offline ramTopic starter
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« Reply #45 on: December 01, 2010, 06:02:39 pm »
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hello danny 475, dp is deeper md operating at 100-120hz to penetrate the grnd deeper for big targets. if you make small coil for small targets then adjust the operating frequency to higher frequency for more sensitive to small targets. maybe it's beter to make two dp for small targets try the xr71 schematic the pcb is same to dp pcb.

regards, ram,

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Offline xavier
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« Reply #46 on: December 02, 2010, 01:50:42 am »
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Only adjusting the frequency by it's self will not do you must adjust the pulse delay and to do that you will have to replace some components.

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Offline danny475
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« Reply #47 on: December 03, 2010, 08:37:16 am »
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hi
i know that i have to adjust the frequency
what i wont is the data of 25cm serch coil
the number of turns
thanks to all
danny

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Offline xavier
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« Reply #48 on: December 03, 2010, 10:46:44 am »
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Danny you were told how to convert a big coil to a smaller coil however the result will not be good you have to know at what delay the coil will be running at to be able to make a coil that will be suitable also you need to know what you are going to be looking for a machine with a delay of 8ms will be good for nugget hunting one that is at 50ms will be good for coin hunting and one that  175ms will do great for very large objects a great depth using a large coil so don't come telling us that you know that you have to adjust the frequency cose that will not do in the case of making a small coil it would do if you were to make a slightly smaller or bigger coil.

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Offline ispanyol2
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« Reply #49 on: December 04, 2010, 09:15:17 am »
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hi danny
a coil 25 cm in diameter you can not find nothing. coil 42 cm in diameter, this device is the ideal. I've done my devices using this coil. One euro shooting distance is 65 cm in full the net.

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