Automotive Voltage Regulators
Vehicles function off of a combination of mechanical and electrical devices. The voltage regulator monitors the voltage usage in the vehicle through the alternator or the generator. It maintains the correct voltage to all the components of the vehicle. If the voltage is too great, it burns out the component. If the voltage is too little, the device cannot function properly. The voltage regulator prevents circuit voltage from exceeding safe levels. It detects when the battery needs charging and allows voltage to flow to it by cutting resistance in the circuit. When the battery is charged then the current is stopped and diverted to other needs. On the other hand, when the engine is being used a lot, the alternator is putting out more voltage than can be handled by smaller components of the vehicle like light bulbs. These would burn out if not for the voltage regulator.