*Hall Effect*

## HALL EFFECT

A current I flows in one axis (typically 20· 200 mA).

A voltage E is created perpendicular to the current flow when a

magnetic field is applied perpendicular to the voltage and current planes.

The more perpendicular the applied field, the greater the voltage.

The Hall Voltage (VH) = E = BIL.sine(0°)

*where:*·

B = applied magnetic field

I = applied electric current

L = a constant for the Hall crystal material

sine = a trigonometric function, often appearing on calculators as “sin”

0° = angle between magnetic field and Active Hall device element

## HALL EFFECT PROBER

To evaluate the effect that a magnetic field has on current flow

through a device by testing while moving the magnet in and out.

We can then rotate the magnet to change the polarity

of the magnetic field to complete the measurements.