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A circuit for eliminating PFC noise when inputting high voltage into small and medium power supply

An input voltage overvoltage and undervoltage protection circuit controlled by MCU

A circuit for suppressing current overshoot of PFC switch

A bridgeless PFC input undervoltage protection circuit

A method for upgrading the firmware of a lighting power supply via NFC

A circuit to improve the efficiency of LLC topology with wide input and output voltage

A tunnel lamp anti-interference isolation dimming circuit

An input surge protection and low standby power consumption circuit