Automobile xenon lamp variable frequency decoder

Abstract

The invention relates to an automobile xenon lamp variable frequency decoder. The automobile xenon lamp variable frequency decoder comprises a power circuit, a control circuit, an automobile storage battery auxiliary power supply circuit and a hybrid power supply circuit. The power circuit is connected to an automobile lamp power supply circuit. The control circuit controls the power circuit to output currents and voltages to the hybrid power supply circuit. The automobile storage battery auxiliary power supply circuit is connected to an automobile storage battery. The control circuit controls the automobile storage battery auxiliary power supply circuit to output currents and voltages to the hybrid power supply circuit. The hybrid power supply circuit supplies power to xenon lamps after being subjected to rectifying and filtering. By the adoption of the automobile xenon lamp variable frequency decoder, energy can be directly supplied to the xenon lamps for working; with respect to the insufficient current part, the variable frequency decoder supplies sufficient currents to the xenon lamps for working through the hybrid power supply circuit by being connected with the positive pole and the negative pole of the automobile storage battery, so that the positive pole and the negative pole are turned on and turned off to control all headlamps of automobiles to pass detection.

Description

technical field [0001] The invention relates to a decoder, especially a frequency conversion decoder connected with an automobile xenon lamp. Background technique [0002] With the rapid development of today's electronic technology, more and more cars have adopted the intelligent driving computer CANBUS protocol. The headlights are equipped with a light detection circuit. The power input to the halogen headlights adopts a 50Hz-200Hz square wave pulse width modulation signal with a power detection circuit. If the current is abnormal, a fault code will appear on the instrument panel, and the headlight power supply circuit will be cut off. , so that the installation of the xenon lamp cannot pass the headlight detection circuit and the installation fails. According to the characteristics of vehicles using the CANBUS protocol, the market has emerged as the times require for automotive xenon lamp decoder products. The current existing decoding circuit is: [0003] Such as figur...

AI Technical Summary

Problems solved by technology

However, in the periodic waveform of the headlight power supply input, the disadvantage is that the 5Ω resistor dummy load wastes tens of watts of power in vain, causing severe heat generation and the risk of vehicle spontaneous combustion

The disadvantage of this decoding circuit is that the xenon lamp is powered by the original car headlight line (limited current 5A-6A), which limits the start-up speed of the xenon lamp to about 10A high current to meet the international standard for starting the xenon lamp.

Moreover, the transient overcurrent of large electrolytic capacitors is very easy to damage the driving computer module, which also greatly reduces the passing rate of the installation, and cannot be installed on all CANBUS protocol models.

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