Honda CB160 Shop Manual page 96

92
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cs 12s A.c GENERA TOR cHARACTERrsncs
i
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UNDER NORMAL CONECTION
0~
>U
20 5 ••
\ BATTERY VOLTAGE
16 4 \ ~--- . . _ _
12 3 _ \ __ _
8 2
4
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5.
ELECTRICAL PARTS
1.
Performance of AC generator
0
0 8, 00
The charging characteristics of the AC generator
employed in Model CB
125
and CB
160
(due to a
nomal electrical load) are shown in the figure. How-
ever, when any loqd parts such as flasher lamps lin
qpdition to designated load) are employed, the dis-
charged current correspondingly increases and the start
of change is shifted toward the high speed rotation
side ; charging current is reduced. (Refer to Fig.
5.43}
fig. 5. 43 Performance af AC generator
Confrrmation of electrical position, as shown
in
Fig.
5.44,
remove the generator cover, measure
and confirm the stamped positions of the stator and
rotor by using the measurement cover (tool) and a
timing lamp. (Refer to Fig.
5.
44)
(CAUTION)
This type of AC generator is rotated in oil mist.
When an extreme value is obtained when measuring
output, or charging and discharging current by the
service tester, inspection of stain between the rotor
Fig.
5.
44 Measurement of timing
and stator should be performed.
2
3
Fig. 5. 45
Rectifying operation
Fig. 5. 46
Silicon rectifier
B.
Silicon rectifier
The rectifier converts AC current to DC current.
A
battery which is coupled and employed in the AC
generator or AC generating coil requires a charge
by DC current. Therefore, when generated current
is AC current, it must be changed into DC current
by rectifying.
Redifying changes the direction of electric curreflt
which flows alternatively and periodically in opposite
directions into a constant direction. This may be ex-
plained in terms of water flow as shown in Fig.
5.45
(D.
When water pressure is applied alternatively
from both side A and side B, water flow from B to
A
is stopped by a reverse limit valve and o:ily flow
from A to B occurs: The device performing the oper-
ation electrically is the rectifier. In methods for recti-
fying, there are, as shown in figures, halfwave rec.tifi-
cation
®
which allows one side of the alternating
current to flow {the other being stopped), and full-
wave rectification
@
in which currents of different
directions are arranged in the same direction (Refer
to Fig.
5.
45)