PTC Heater is an automatic constant temperature, power saving heater. It is a heater made of PTC thermistor ceramic elements as heat source, corrugated sheet made of aluminum alloy as radiator, which is bonded and welded. PTC heater of electric air conditioner generally includes MCU processor, power module MOSFET / IGBT, isolation pre drive and … Continue reading 4KW New Energy Bus Air Conditioner PTC Heater