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开关电源电路以ICl(NCPl650)、IC6(NCPl377)和IC2(NCPl217)为核心构成,其中,NCPl650为功率因数校正电路,NCPl377为12V电压电源控制芯片,NCPl217为24V电压电源控制芯片。开关电源电路原理可参照原机电路原理图。1.整流、滤波电路220V左右的交流电压先经延迟保险管F1,然后
Switching power supply circuit to ICl (NCPl650), IC6 (NCPl377) and IC2 (NCPl217) as the core structure, of which, NCPl650 power factor correction circuit, NCPl377 12V voltage power supply control chip, NCPl217 24V voltage power supply control chip. Switching power supply circuit principle can refer to the original circuit schematic. 1. Rectifier, filter circuit About 220V AC voltage delay after the fuse F1, and then