[ma330]

Originally Posted by Theseus

http://www.geotech1.com/cgi-bin/pages/common/index.pl?page=lrl&file=reports/escope301/index.dat

The link above will take you to a schematic of the Electroscope 301.

However, I don't know exactly what you mean by "nice working". If you mean will it respond to your own ideomotor response, than yes it will do that. But you could save your time and expense of building such a device because the electronics in the 301 do not add anything to the response or the accuracy. You could get the very same results by just working with a bent piece of wire, or a bent piece of brazing rod.

Go to the link below, and you will find some very fine examples of bent wire L-rods that will perform exactly like an Electroscope 301.

http://www.geotech1.com/cgi-bin/pages/common/index.pl?page=lrl&file=/projects/lrl1/index.dat

Hope this helps....

tank you theseus dear
i see this schematic.but this schematic is very easy.
electroscop have not any IC or TRANSISTOR????
THIS schematic have only resistor and swich.i guessing that bad working.
please very help about this problem.and is possible give me a shchematic than LRL
tank you for help