The inverter is a DC to AC transformer, and it is actually a process of conversion is a voltage inverter. AC converter is the voltage of the grid into a stable 12V DC output, while the output of the inverter is the Adapter 12V DC voltage into a high voltage alternating current high frequency; the same two parts are used with more than the width modulation (PWM) technique. Its core is an integrated PWM controller, Adapter using UC3842, the inverter is used TL5001 chip. TL5001 operating voltage range of 3.6 ~ 40V, which features an internal error amplifier, a regulator, oscillators, with dead-controlled PWM generator, low-voltage protection circuit and short circuit protection circuit and so on. Input interface part: There are three signal input section, 12V DC input VIN, work ENB enable voltage and current Panel control signal DIM. VIN provided by the Adapter, ENB voltage provided by the MCU on the motherboard, its value is 0 or 3V, when ENB = 0, the inverter does not work, and ENB =