Unit12ChargingSystem.pptVIP

Unit 12 Charging System;Unit 12 Charging System; The charging system uses the mechanical energy of the engine to generate electricity. For this reason, the charging system as also called the generating system. The charging system should supply only as much current as the car needs. If the charging system puts too much current into the battery, the battery becomes overcharge. This reduces the life of the battery[2]. ;Also, if the charging system produces too much power, this may reduce the life of lights and accessories. If the charging system produces too little electricity, the battery may have a charge too low to start the engine. The charging system has a battery, an alternator, a regulator, and either an ammeter or an indicator light.;The Alternator Electricity can be produce by moving a conductor through a magnetic field. The opposite also holds true. By moving the magnetic field and holding the conductor, electricity can be generated in the conductor. This current is called an induced current. This is the basic principle of the alternator, an electromechanical device that changes mechanical energy into electrical energy.;Unit 12 Charging System; The alternator has two main parts — a conductor and an electromagnet. The conductor is called the stator and the electromagnet, the rotor[3]. Changing Alternating Current to Direct Current The alternator produces alternating current, abbreviated AC. Alternating current is current that flows first in one direction, then in the opposite direction. In contrast, direct current (DC), which the battery produces, flows in only one direction.;Unit 12 Charging System; The diodes, or rectifiers, of an alternator change AC to DC. These electronic parts allow current to flow easily in one direction. When the current to flow easily in one direction. When the current reverses and tries to flow in the opposite direction, the diodes prevent the reverse flow.; Most alternators have six diodes that connect to the w