The basic function of a pick-up element is to translate the motion
of the stylus into an electrical signal. The most popular cartridges
in use are the moving magnet (fixed coil and tiny magnet) and the
moving coil (fixed magnet and tiny coil). In both designs the
vibrations of the stylus cause fluctuations in a magnetic field.
Last month we published a preamplifier for advocates of the
moving coil design; this month we turn our attention to those
who favour a moving magnet element.
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