Αlthough i don't remember exactly the turns, they depends from pot core's Al.
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ALONSO PD MISSION ACCOMPLISHED V1,V2
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Originally posted by Morgan View Postthe price for this PD is high,its not possible to make it 100% stable,it drift,this is big price for that kind of locator,the original cost 2.000 dollars the clone 20.000 dollars.
yes it work as a treasure locator but at short distances of only a few meters as Geo confirm this behavior when play with the PD here in my field test,there are videos showing that.
I built the PD Alonso in 2010 and it worked. But the problem was instability. at that time, I believed that the original PD you have also has drift and is unstable.
Whenever I have the time, I will work to fix its instability problem.
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The solution is very good components quality. The voltage drift of PS must be lower than 1mv and on base of T13 only few uV. You need a multimeter 5 1/2 digits to check it. After it PD is coming very stable.Originally posted by aft_72005 View PostI built the PD Alonso in 2010 and it worked. But the problem was instability. at that time, I believed that the original PD you have also has drift and is unstable.
Whenever I have the time, I will work to fix its instability problem.Geo
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Originally posted by Geo View PostThe solution is very good components quality. The voltage drift of PS must be lower than 1mv and on base of T13 only few uV. You need a multimeter 5 1/2 digits to check it. After it PD is coming very stable.
Did your PD Alonso also have instability?
In my opinion, the original PD Alonso must also be unstable. In the films that you and Morgan recorded in Portugal.. all the films are only a few seconds and at most a minute... the PD is being processed and explored... there is no film that is being processed and explored for 10 minutes.
Yes, I have very precise measuring equipment.
The use of high-beta transistors in the form of Darlingtons is one of the reasons for the PD's instability.
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Originally posted by Geo View PostThe solution is very good components quality. The voltage drift of PS must be lower than 1mv and on base of T13 only few uV. You need a multimeter 5 1/2 digits to check it. After it PD is coming very stable.
Next item. Morgan reads the messages here but doesn't respond.
Morgan said that the PD can detect a coin from 30 cm. For an Omega coil with a diameter of 10 cm, this is an unusual detection distance!!! Did you test in Portugal to see from what distance it could detect a coin?
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My PD is very stable. I must turn it on and wait for 1 minute, after it i can adjust it and go.Originally posted by aft_72005 View PostDid your PD Alonso also have instability?
In my opinion, the original PD Alonso must also be unstable. In the films that you and Morgan recorded in Portugal.. all the films are only a few seconds and at most a minute... the PD is being processed and explored... there is no film that is being processed and explored for 10 minutes.
Yes, I have very precise measuring equipment.
The use of high-beta transistors in the form of Darlingtons is one of the reasons for the PD's instability.
At Portugal our purpose was to show that PD works and can catch the phenomeno. Our interest was not to show how much good was the PD.
The main problem was that it needed very critical adjustment.Geo
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I think near to 15 cm, maybe 20 cm max. So does mine pdOriginally posted by aft_72005 View PostNext item. Morgan reads the messages here but doesn't respond.
Morgan said that the PD can detect a coin from 30 cm. For an Omega coil with a diameter of 10 cm, this is an unusual detection distance!!! Did you test in Portugal to see from what distance it could detect a coin?Geo
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My Alonso circuit on the workbench is very stable.Originally posted by Geo View PostMy PD is very stable. I must turn it on and wait for 1 minute, after it i can adjust it and go.
At Portugal our purpose was to show that PD works and can catch the phenomeno. Our interest was not to show how much good was the PD.
The main problem was that it needed very critical adjustment.
The instability occurs during the search. The place where it becomes unstable is where the metal is buried.
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