Delta pulse

[Chris]

Re: Delta pulse

Hi Jean-Charles,

some questions...
Where have you connected the +/- 12V? In the picture you can see only a 12V battery? Is the "-12V" the battery minus pole and "+12V" the battery plus pole in the schematic?

And where is your meter connected? Parallel to R37?

Thanks Chris

[Tomas]

Re: Delta pulse

yesterday i tryed this PI, it feels well iron, copper, but it doesn't feel small golden ring about 0.8 cm dia ( , is it necessary to adjust somethink for a gold specially ?? and maybe you can describe how to operate with this mashine? thanks!

[kt315]

Deltapulse on Bulgarian site

here are some pictures and data.



Click Here

[JC]

Re: Delta pulse

Bonjour à tous,

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For Chris:

The +12V is connected to the +12V of the diagram
The mass (0V) is connected to the -12V of the diagram

The galvanometer is well in parallel on R37
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For Thomas:

Your Delta - Pulse is not conformable.
Verify the set of the assembly and the value of components.
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For Geo:

I don't have shield at the coil
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For Pirania

I don't have PCB on EAGLE, ORCAD or PROTEL

I don't think that one can put to add a discrimination as easily to Delta - Pulse.
---------------------------------------------

I see that there is a lot of person interested by this metal detector !

A bientot.

[Chris]

Thanks.....Re: Delta pulse

Thanks

[Chris]

Re: Delta pulse

Hi JC

The Delta Pulse use a kind of so called "reverse discrimination" technic for discrimination.

Chris

[Tomas]

Re: Delta pulse

some more guestion for JC: are R40 and R39 standing in right places, because in XR71 they are transposed by each other, do you use somethink for cooling of IRF, what kind of battery do you use (i'm using 1.2 Ah) and maybe you have schematics of battery charger? it would be great help for me, and i think one more metal detector will be made till the end )

[geo]

Re: Delta pulse for JC

Which is the diameter of the silver coin 5F?
Geo

[Chris]

Re: Delta pulse for JC

39mm

[Gene L.]

Re: Delta pulse

Hello, just wondering if any pc boards are already being sold in usa? Is easier to buy than make a board myself. Thanks Gene L.

[JC]

Re: Delta pulse

Hello,

For Thomas :

Yes, the R40 and R39 standing are in right places in the Delta-Pulse.
I use 10 battery 1,2V/600mA.
My charger is an simple charger for accumulator.
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For Gene L.

I don't know, I don't believe.

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For Chris :

What is "reverse discrimination" ?

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For KT315 :

Thank you for the link
I had searched for him without finding it.

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best regards

[kurt]

Re: Delta pulse

JC

How can i adjust the pcb's to the correct dimmensions plse.

rgds kurt

[Peter]

Re: Delta pulse

Open in Photoshop etc and set resolution to 300pixels/inch

[Errel]

Re: Delta pulse

Hello Jc,
I want to build the delta pulse. What are the values of the resistors? Which of the resistors is the damping resistor since there is no exact parts list posted. Pls help me..

[Gosho]

Re: Deltapulse on Bulgarian site

Thats nothing Kt315 micron sell metaldetectors and cos of that u could get working schemes
with sensitivity to catch a car at 15 sm