What is the relay control circuit on the APW12 1215b PSU board?

The main function of the relay control circuit on the PSU board is to protect the circuit. The input voltage of APW12 12V-15V B version power supply is AC 220V. The circuit will be impacted by a large current at the moment of power-on. In order to protect the components on the circuit from damage, relays and thermistors will be installed on the circuit to achieve protective effect and can reduce power consumption.

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