[quote=J_Player;125115]This is a circuit diagram that detects variations in the static charge near the antenna. There have been no reports of anyone finding treasure with this circuit, probably because it is not capable of locating treasure.
The circuit was designed and built by Ivconic as a spare time project to see what it would do. He concluded it does nothing except detect static charges in the air and electrical power lines.
See what Ivconic says about this circuit here:
http://www.geotech1.com/forums/showpost.php?p=41129&postcount=71
The purpose of the Lucent transformer is to charge the dish at the antenna in a manner that is completely isolated from the sensing circuits while increasing the voltage. There is nothing critical here as long as the circuit is able to place a charge on the dish that measures at least 12 volts. If you want to use a different modem transformer, it should work ok. You may need to adjust the value of the resistor and capacitor between BC107 and the transformer to get the best performance. I would expect your modem transformer will not charge the dish to as high a voltage as the lucent transformer because your transformer is probably not stepping up the voltage as much at the secondary. You could try re-winding this transformer with approximately twice as many turns on the secondary as the primary. The charging circuit uses very little power, so the wire size is not so important. If you read the posts above, you will see Esteban suggested replacing the LM555 with a 7555 Cmos version. This is a good idea.
If you are successful at building this charge detector then you should be able to sense charges in the air and locate power wires that are hidden behind walls. You should also be able to locate sources of ions in the air and high voltage charged things such as an ion generator, or an old style monitor that uses a CRT to show the images. This sensor may be more sensitive than other charge detectors because it has a differential amp front end which can be adjusted for very sensitive detection before sending the signal to the later amplifier stages. I am guessing it is more sensitive to airborne charges than the Zahori design that Esteban posted below it in post #8.
I TOO MUCH THANK YOU FOR YOUR HELP,
AND YOUR BY TIME TO BE DEALT WITH MY QUESTION.
I MADE THE PCB, IN FEW DAYS THEY WILL BE READY FOR TRIAL.
I WISH IT WORKS.
IF YOU KNOW SOME OTHER DRAWING OF DETECTOR OF DISTANCE, THAT COULD DETECTION TREASURE,
I REQUEST WITH BRIEFINGS.
ONCE AGAIN I THANK
Best wishes,