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Offline dbannerTopic starter
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« on: October 31, 2014, 03:54:51 pm »
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cannot read the text but maybe somebody who collects old projects might like this one.

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« Reply #1 on: October 31, 2014, 04:06:59 pm »
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I say its Italian text   Smiley but i can’t read it either  Huh?

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Offline dbannerTopic starter
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« Reply #2 on: October 31, 2014, 04:17:47 pm »
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Yes Yes Italian! It should be named the "Don Corleone Detector". I built it but it keeps blowing the Jfet transistors after a while. but it does have good depth about 6 inches on an average coin. no discrimination.

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Hecho por mí mismo
« Reply #3 on: April 24, 2016, 05:25:28 pm »
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Hello dbanne, I am only TV repairman, but one day with nothing to do, I built this design for more than twenty years and never blew the jfet. I built the coil wire enamelled 0.12 mm type spiderweb, and adjusted the preset following the instructions in the text. Since then I have the habit of exploring the terrain. Greetings and thanks. Ingot.

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« Reply #4 on: April 25, 2016, 07:21:28 am »
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Interesting.   Sure would like to see that in English.


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« Reply #5 on: August 10, 2016, 11:48:42 am »
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(Hi dbanne'm just TV repairman, but one day with nothing to do, I have built this design over twenty years ago, and has never burned the jfet. I built the coil type spyderweb, copper enameling 0.12 mm. I adjusted the preset following the instructions in the text. Since then I have the habit of exploring the land. I have the text in Spanish if someone wants a copy. Greetings and thanks. Ingot)

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« Reply #6 on: July 11, 2023, 10:42:39 pm »
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It looks simple, does it have ground balance?

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« Reply #7 on: August 21, 2023, 06:08:04 am »
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sorry for necroposting but I saw this only today...

I made this post as a reference for this project

This project came from a popular Italian Magazine called "Nuova Elettronica" (new electronics). Probably the 95% of electronics enthusiast in Italy learn from this magazine in the years before 2000.

What is interesting about this project is that many design they do were IB detectors but they analize not the phase change but the amplitude of the signal.

they are interesting units to search in places where there are little trash because they are all-metal, but they are powerful.

Posted on: August 21, 2023, 06:06:05 am
capacitors C16 and C17 act as a form of ground balance... to make detection you have to stay "some time" on the target to unbalance this part... think it is a slow sweep detector

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