What is the Principle of Car Flash?

The flash lamp is controlled by the controller of the car.

The most common is the double flash of the car. When the double flashlight of the car is turned on, the controller will control the car lightly to flash all the time, which is used to remind other vehicles or pedestrians on the road and play a warning role.

There are three kinds of the most common flashers in cars, namely, capacitive flashers, wing flashers, and electronic flashers. Capacitive flashers make use of the charge and discharge delay of capacitors to make the flashers produce periodic switching action so that the steering lights of cars keep flashing. The working principle of the vane flasher is to use the thermal effect of the current and take the thermal expansion and cold contraction of the thermal expansion strip as the power to make the vane produce sudden action. At the same time, it can connect and disconnect the contacts to make the turn signal light flicker continuously. The electronic flasher uses the switching characteristics of the triode, the charging and discharging delay characteristics of the capacitor, and the on and off characteristics of the control relay coil to control. The electronic flasher has a relatively stable working state and a long service cycle, so it is not easy to have problems. It is widely used in the automotive steering lamp system.

In the event of an accident, the double flashing lights of the car should be turned on for the first time, mainly to warn passing vehicles.

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