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What is the role of Farad capacitors in a car?

2021-02-19 13:56:01

What is the role of Farad capacitors in a car?

Capacitors are widely used in household appliances, and their functions are also important. So what are automotive Farad capacitors? Automotive Farad capacitors have long life and fast charge and discharge characteristics. When the power amplifier is operating under high load, the instantaneous current flow is quite large. At the same time, the car generator and battery may not be able to supply power in time, resulting in a decrease in the operation efficiency of the power amplifier, and the sound quality is also degraded, resulting in distortion. However, if you add a car Farad capacitor that charges and discharges quickly, when the power amplifier needs an instant large amount of power, it can maintain a stable power supply for the power amplifier at the moment when the generator and the battery are too late to supply power, and then quickly fill the power from the generator end. , to prepare for the next amplifier power output.


       It can be compared to a lake of current with long life and fast charging and discharging. The car Farad capacitor used in the power supply of the car audio system, as the name suggests, is a thing that seems to be able to hold current. A simple analogy, if the car generator and battery are regarded as the source of river water, the current is regarded as a river, and the power amplifier is regarded as a waterwheel that uses the river to operate, then the car Fara capacitor is like a lake between the source and the waterwheel. When the waterwheel is working inefficiently, the normal flow of the river water can be used to drive the waterwheel, but when the waterwheel needs to run with a heavy load and fast operation, the water flow from the source of the river water is often in short supply, and the waterwheel cannot even be driven. At this time, if we build a lake between the waterwheel and the source, when the water at the source is too late to drive the waterwheel, we can use the pre-stored water in the lake to quickly replenish the waterwheel to maintain the operating efficiency of the waterwheel. Role.

What are the characteristics of automotive Farad capacitors?

  1. Fast charging speed, charging for 10 seconds to 10 minutes can reach more than 95% of its rated capacity;

  2. Long cycle life, deep charge and discharge cycles can reach 10,000 to 500,000 times, and there is no "memory effect";

  3. The charging and discharging circuit is simple, no charging circuit like a rechargeable battery is needed, the safety factor is high, and the long-term use is maintenance-free;

  4. Good ultra-low temperature characteristics, wide temperature range -40℃~+70℃;


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