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A parallel circuit supplies the "charge" warning indicator and is earthed via the regulator (which is why the indicator is on when the ignition is on but the engine is not running). Once the engine is running and the alternator is generating power, a diode feeds the field current from the alternator main output equalizing the voltage across the ...
Ignition system; 1 ignition coil, distributor, low voltage 1a, 1b distributor with two separate circuits 2 breaker points magneto ignition 4 coil, distributor, high voltage 4a, 4b distributor with two separate circuits, high voltage 7 terminal on ballast resistor, to distributor 15 battery+ from ignition switch 16 15a
Early automobiles used a magneto for ignition, which provided no accessory power. The first electrical accessory connection was supplied by a DC generator. Voltage varied with engine speed and because of technological limitations, complicated mechanical devices were used to regulate it. Even so, voltage at idle was too low to be useful.
The earliest electronic systems available as factory installations were vacuum tube car radios, starting in the early 1930s.The development of semiconductors after World War II greatly expanded the use of electronics in automobiles, with solid-state diodes making the automotive alternator the standard after about 1960, and the first transistorized ignition systems appearing in 1963.
The contact breaker is operated by an engine-driven cam.On an engine with a distributor, the contact breaker can be found beneath the distributor cap.The position of the contact breaker is set so that it opens (and hence generates a spark) at exactly the optimum moment to ignite the fuel/air mixture.
Alternator is being fed by starter battery. That battery is recharged by alternator that is turned by engine. Electricity generated is used to recharge starter battery and also run all auxiliary functions like spark plugs, lights, fans. More advanced vehicles might be able to adjust alternator load according to circumstances.
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A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.