The working principle of a decoder/CANBUS is to simulate the electrical characteristics of the original halogen bulbs by modifying the voltage or current signals in the electrical system, thus making LED bulbs compatible with the electrical system. Specifically:
A decoder is an electronic device that can decode and convert digital signals in the electrical system, thus matching the electrical characteristics of LED bulbs to those of the original halogen bulbs. For example, some vehicles may use a PWM signal to control the brightness of halogen bulbs, and a decoder can convert this PWM signal to voltage and current signals suitable for LED bulbs.
A resistor is an electronic component that can change the electrical characteristics of a circuit by inserting a resistance value into the circuit. After replacing LED bulbs, inserting a resistor can change the circuit's resistance value, thus matching the electrical characteristics of LED bulbs to those of the original halogen bulbs.
CANBUS is a control bus used for communication between different systems in a vehicle. In some vehicles, the CANBUS system can monitor the electrical characteristics of bulbs and issue warning messages. Therefore, after replacing LED bulbs, inserting a CANBUS electronic device can enable communication between LED bulbs and the CANBUS system, thus avoiding warning messages.
In summary, a decoder/CANBUS can adapt LED bulbs to the electrical system by modifying voltage or current signals, thus making LED bulbs compatible with the electrical system and avoiding flickering or warning message issues.