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