Date: Tue, 05 Oct 1999 08:41:56 -0400

Author: Gerald Zani

Subject: Re: Sourcing Semiconductor samples


If what you are trying to do is experiment with a small, rectangular piece of
semiconductor and use it to make a Hall effect measurement I can tell you
experience save your time. Making solder wire contacts to the material is
impossible. You'll find out the hard way that the geometry of the
semiconductor material determines its effectiveness.

You can buy a semiconductor with the geometry of a Hall device that has
reliable wire solder contacts from F. W. Bell. Thier real cheap and perfect
little things.

Using thier HS-100 sensor you can construct your own constant current supply
and do a four terminal measurement to make a Hall probe. A GREAT project.


At 11:57 AM 10/5/99 +1300, you wrote:
>Does anyone know where I can get samples of semiconductors for a Hall
>effect experiment?