What is Inverter AC PCB? The Inverter AC PCB (Printed Circuit Board) is the brain of an inverter air conditioner. It controls the compressor speed, fan motor, and cooling output based on room temperature, ensuring energy efficiency and precise cooling. Unlike traditional ACs, inverter ACs adjust power usage rather than switching on/off repeatedly. This is all possible due to the smart PCB system, which includes: Microcontroller IGBT modules Sensor inputs Power supply circuits Proper training in