Honda CB125 CB160 (1972) [98/139] Caution

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92 5 ELECTRICAL PARTS O 7 CBI25 A C GENERATOR CHARACTERISTICS g UNDER NORMAL CONECTION O 20 1 Performance of AC generator The charging characteristics of the AC generator employed in Model CB 125 and CB 160 due to a 5 nomal electrical load are shown in the figure How 16 4 ever when any load parts such as flasher lamps in 12 3 addition to designated load are employed the dis 8 2 charged current correspondingly increases and the start 4 I of change is shifted toward the high speed rotation side 0 0CRANKSHAFT SPEED P R M charging current is reduced Refer to Fig 5 43 Fig 5 43 Performance of AC generator Confirmation Fig 5 44 of electrical remove the position generator as shown cover in 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 and stator should be performed B Silicon rectifier The rectifier converts AC current to DC current A battery which generator by DC or is AC current coupled and generating Therefore employed coil in requires when the AC a charge generated current is AC current it must be changed into DC current by rectifying Rectifying changes the direction of electric current 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 J 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 only 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 rectifi cation 2 which allows one side of the alternating current to flow the other being stopped and full wave rectification 3 in which currents of different directions are arranged in the same direction Refer to Fig 5 45

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