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Kawasaki KZ1300-A1 Quick Reference Manual Page 323

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SUPPLEMENT --1981 MODEL
A.Halile
B. Permanent Magnet
The Hall
IC
is a magnetic-field detector into which a
Hall-effect element (a semiconductor device capable of
generating voltage when a magnetic field passes through
it) and an amplifier for output voltage are
integrated
into one compact
unit.
The Hall -effect element consists
Hall Effect
A. Hall current will not flow when there is no magnetic
field through the Hall-effect element.
L...----+---1
~
__
~-
__
-II--------.J
1. Magnet
3.
Magnetic Field
5. Battery
of a wafer of semiconductor material. A direct current
called the control
current,
is appl
ied
to the element b;
means of ohm ic contacts placed at the ends of the Hall
element.
This produces a flow of charge carriers length-
wise through the element. I n the absence of a magnetic
field, these charge carriers flow in a direct path between
the two ends of the element, and no voltage appears at
the two electrodes placed at the edge of the element.
When
the Hall-effect element is subjected to a mag-
netic field, the charge carriers are deflected from their
straight path and contact one of the two side electrodes
depending on the polarity of the applied magnetic field:
A voltage difference now exists between the two side
electrodes,
and a current will pass between them. When
the control current remains constant, the developed Hall
voltage is a function of the
intensity
of the magnetic
field.
In
this respect the Hall IC differs from an induc-
tor type detector; output voltage of which is a function
of the
time rate
of the magnetic field intensity
.
Each pickup consists of a permanent magnet and Hall
IC (single unit) and a timing rotor (made of soft iron and
used in common with the other two pickups)
.
The mag-
net and Hall IC unit is fastened to the left engine cover.
(N65)
B.
Hall current will flow when the Hall-effect element is
subject to a
magnetic
field.
L...--_ _ +---1
~
__
~
__ _
11--_-----1
7.
Hall Current
2. Volt Meter
4.
Hall-Effect Element
6.
Control Current
323

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