on and off using a chopper plate. The output of this sensor is almost a square
wave with constant amplitude.
The Hall Effect can also be used to detect current owing in a cable. The
magnetic eld produced around the cable is proportional to the current owing.
Hall Effect sensors are very popular. This is partly due to their reliability but
also the fact that they directly produce a constant amplitude square wave in
speed measurement applications and a varying DC voltage for either position
sensing or current sensing.
A number of new sensors are becoming available. Hall Effect sensors are now
often used in ...
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