In the field of home appliances, optocouplers achieve strong and weak electrical isolation, block power grid surges and motor electromagnetic interference, and meet the safety protection requirements of home appliances. AT817, AT1018, and AT1019 are mainly used for voltage stabilization feedback on the primary and secondary sides of power boards in air conditioners, refrigerators, and induction cookers; ATM60X and ATW60 X-ray optocouplers are used for high-precision analog sampling and detection of household appliances; AT6N137 achieves high-speed digital signal isolation between home appliance boards; AT0601, ATX223, ATX213, AT305X, AT306X cover scenarios such as relay driving, fault protection, and switch signal isolation. Together with the main control of the entire machine, they complete power supply stabilization, load driving, and abnormal protection, effectively preventing high voltage backflow and improving the anti-interference ability and operational reliability of household appliances.
Air conditioner:
The air conditioner relies on optocouplers to isolate the high and low voltage sides of the power supply to achieve stable voltage feedback. At the same time, it isolates the main control low voltage control signal from the compressor and fan high voltage drive circuit, isolates the electromagnetic interference generated by power grid surges and motor operation, stably transmits temperature detection and overload protection signals, avoids damage to the motherboard chip caused by high voltage surge, meets the requirements of household appliance safety, and ensures stable operation of air conditioning cooling and heating.
Electromagnetic furnace:
The induction cooker uses optocouplers to isolate the low-voltage control motherboard from the high-voltage resonant power circuit, isolating strong electromagnetic interference and voltage surges generated during operation, stably transmitting temperature control and overcurrent/thermal protection signals, preventing high-voltage backflow from damaging the main control chip, and meeting home appliance insulation safety standards to ensure stable heating operation and timely triggering of fault protection.
Refrigerator:
The optocoupler in the refrigerator is used to isolate the high and low voltage circuits of the power supply to achieve voltage stabilization. At the same time, it separates the weak current of the main control from the strong electric drive lines of the compressor and fan, isolates the surge interference caused by power grid fluctuations, stably transmits temperature sensing and overload protection signals, avoids damage to the control chip caused by high voltage impact, complies with household appliance safety standards, and ensures stable start stop and fault safety protection of the refrigeration system.
