The Hall effect probe for gaussmeter, origin and application

When we talk about the Hall effect probe, we first need to clarify some terms. First of all, its origin, which bears the name of its inventor Edwin Herbert Hall since its discovery in 1879. As we have already explained elsewhere in our blog, we often talk about Lorentz’s strength in the field of magnetism. If a magnetic field forms around an electric field, unfortunately, the field lines of these two fields will condense if they extend in the same direction. If, on the contrary, these field lines work in the opposite direction, they will weaken. The force reached at this stage is the Lorentz force.

If this force acts directly on the electrons of a conductor, which carries current, connected with a printed circuit board, we generate what is called the load offset. This means that there is a shortage on one side and an excess of electrons on the other. This combination ultimately creates an electric field called Hall effect.

From the Hall effect to the Hall probe

We now come to the Hall effect probe for gaussmeter. The combination of printed circuit boards, control circuit and magnetic field is called the Hall generator. If the integrated circuit remains constant here, we are talking about the Hall probe, with which the magnetic fields can be measured. The intensity of these magnetic fields is generally measured in amperes per meter or in Tesla. There is also the Oersted unit of measure, but it is no longer used. However, the most common way to look at magnetic flux density these days is Tesla, which can also be measured with the Hall effect sensor.

As already mentioned above, the electrons are pushed vertically out of their original direction of movement by the conductive plate, so that they are also located on one side of the plate. The resulting electric voltage is proportional to the magnetic field, the strength of which we still do not know. If we now use the Hall voltage across the conductor, we can calculate the electric forces which are equal to the Lorentz force and therefore the force of the magnetic field.

If you have more questions about the Hall Effect Gaussmeter or other topics in this field, we recommend that you read the other articles on our blog or contact our team of experts.